Briggs Stratton Lawn Mower 1687286 User Manual

Power Steering Conversion Kit  
Mfg. No. 1687286, 1687302  
Installation  
For Prestige / 500 / 1800 / 2800 Series Tractors  
Instructions  
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Power Steering Conversion Kit  
Table of Contents  
SECTION CONTENTS  
General Information  
Safety  
Personal Protective Equipment ................................................... 1-1  
Battery/Electrolyte Saftey .............................................................1-1  
Electrical System Safety...............................................................1-1  
Elevating Unit Safety ....................................................................1-1  
Proper Tool Use............................................................................1-1  
Work Area Safety..........................................................................1-2  
Compressed Air Safety.................................................................1-2  
Grease & Lubricant Safety............................................................1-2  
General Servicinfg Safety.............................................................1-2  
General Repair  
Bearings & Bushings ................................................................... 1-3  
Belts & Pulleys............................................................................. 1-3  
Electrical Parts..............................................................................1-3  
Fasteners & Harware....................................................................1-4  
Genuine Replacement Parts.........................................................1-4  
Hydraulic Parts .............................................................................1-4  
Paint..............................................................................................1-4  
Reuired Tools & Equipment..........................................................1-4  
System Checks.............................................................................1-4  
Notes ............................................................................................1-5  
Installation Instructions  
Kit Contents ................................................................................. 2-1  
Parts, Descriptions....................................................................... 2-2  
Hitch Replacement .......................................................................2-3  
Front Axle Replacement ...............................................................2-3  
Steering Replacement ..................................................................2-7  
Tilt & Steering Wheel Installation................................................2-11  
i
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Installation Instructions  
Table of Contents  
ii  
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Safety Rules  
General Information  
Electrical System Safety  
SERVICE AND MAINTENANCE  
• Loose connectors, worn wires, damaged wire insula-  
tion, and loose termination hardware can cause  
sparks, short-circuits, and erratic equipment opera-  
tion. Always check wiring for damage, and make  
appropriate repairs before placing unit back into oper-  
ation.  
Personal Protective Equipment  
• Wear protective safety glasses whenever using hand  
or power tools, shop equipment, and whenever work-  
ing under power equipment to protect your eyes from  
falling debris and small parts.  
• Wear safety goggles or full face protection when han-  
dling battery electrolyte fluid, or when performing  
grinding or sharpening operations that produce  
sparks or flying debris. Extensive grinding may  
require the use of protective sleeves and an apron.  
• Use care when working around exposed terminals to  
prevent short-circuiting the electrical system.  
Sparking, electric shocks, and damage to the system  
may result from accidental contact between terminals  
and metal hand tools.  
• Wear work gloves when handling sharp surfaces  
such as mower blades, or when working around  
sharp edges. Never wear gloves that are loose fitting  
or that have tie straps, as these could cause your  
hands to get caught by rotating parts, resulting in seri-  
ous injury. Chemical-resistant Rubber gloves are rec-  
ommended when handling or pouring battery elec-  
trolyte.  
Elevating Unit Safely  
• Always support unit on approved jack stands when  
working on an elevated unit, and keep unit from  
rolling by engaging parking brake and placing wheel  
chocks behind wheels still on floor or work table.  
• Secure unit to work-surface of scissor-lift worktables  
or other powered lift tables in accordance with the  
manufacturer’s instructions. Unsecured units may roll  
unexpectedly while work is being done, causing  
injuries.  
• Steel-toe safety shoes are highly recommended to  
protect feet from falling tools, heavy parts, and other  
shop equipment.  
• Never work under an elevated unit unless it is proper-  
ly supported by jack stands, locked from rolling with  
wheel chocks or equivalent, and you can quickly  
escape from under the unit in an emergency using a  
rolling device such as a mechanic’s creeper.  
Battery/Electrolyte Safety  
• Lead-Acid batteries use an electrolyte containing sul-  
phuric acid, a highly corrosive liquid that can cause  
severe chemical burns if allowed to come into contact  
with skin, or blindness if allowed to contact your eyes.  
Always wear approved eye goggles or a full face  
shield and protective gloves when handling elec-  
trolyte or filling the battery.  
• Always protect your eyes from falling debris or small  
parts by wearing approved safety glasses or goggles.  
• Remove the ignition key and disconnect the spark  
plug wires before working under a unit. Accidental or  
inadvertent starting could result in serious injuries.  
• Lead-acid batteries also produce hydrogen, a color-  
less, highly explosive gas that can be easily ignited  
by a single spark. Charging the battery incorrectly or  
hooking up jumper cables improperly can cause  
sparking, and must be avoided. Always follow rec-  
ommended battery charging and jumper cable pro-  
cedures.  
Proper Tool Use  
• Use power and hand tools only for the use that they  
were designed. Never alter or modify tools, or impro-  
vise using tools that are not suitable for the job at  
hand.  
• When removing or installing battery cables, discon-  
nect the negative cable FIRST, and reconnect it  
LAST. If not done in this order, the positive terminal  
could be accidentally shorted to the frame by a tool,  
creating a dangerous spark that can ignite nearby fuel  
vapors or escaping hydrogen gas from the battery.  
• Keep all hand and power tools in good repair, and put  
them away when done to avoid cluttering the work  
area. Use extra care when using corded tools around  
moving or rotating parts such as belts and pulleys,  
since the cord could get caught and suddenly pull the  
tool, or you, into the area of moving parts.  
• Keep battery securely fastened in position with vent  
tube directed down and out of battery compartment.  
Replace battery if electrolyte leakage occurs. Make  
sure the battery vent tube is properly installed, and is  
not plugged with clippings or other debris. Replace  
the vent tube if cracked, damaged, or missing from  
unit.  
• Always check the unit to ensure that all hand and  
power tools and tool attachments have been removed  
from the unit after use. Small tools and tool attach-  
ments left on the equipment can fall into the cutting  
path when the unit is placed into service, and become  
a hazard to bystanders if struck by mower blades.  
• Old batteries should be disposed of by recycling.  
1-1  
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General Information  
Safety Rules  
Work Area Safety  
General Servicing Safety  
• Always keep the work area clear of clutter from dis-  
carded parts, and debris from parts boxes or packag-  
ing materials. Small parts, hardware items, and other  
debris or refuse left lying around can become slip,  
trip, and fall hazards if not removed and discarded of  
properly.  
• Always check safety devices and switches for proper  
operation - never alter these devices or make tempo-  
rary or makeshift repairs. Use only factory-autho-  
rized parts and procedures, and check newly-  
installed parts for proper operation.  
• Make sure all hardware items are properly tightened,  
especially blade attachment bolts. Replace any hard-  
ware that appears damaged.  
• Always observe general shop safety rules for house-  
keeping, and tend to oil spills and other spilled fluids  
promptly to prevent slip and fall injuries.  
• Check brake operation, and adjust or repair as  
required. Always comply with factory specifications  
on settings and adjustments.  
• Allow sufficient work area around the equipment you  
are working on to permit comfortable working posi-  
tions. Never put yourself in a position that would pre-  
vent you from escaping quickly in the event of emer-  
gencies such as sudden shifts in equipment position,  
fire, or other situations requiring an immediate reac-  
tion on your part.  
• Check grass catcher components for wear, damage,  
or deterioration, and replace with factory authorized  
parts if necessary.  
• Always make repairs using factory authorized  
replacement parts only. Using parts that don’t meet  
factory specifications can result in sudden or prema-  
ture failures, poor or erratic equipment performance,  
and potential safety hazards to operators and  
bystanders.  
Compressed Air Safety  
• Always use care when using compressed air to blow  
dirt and debris off equipment - always direct the air  
blast away from yourself and others in the area, and  
protect your eyes with safety glasses to prevent injury  
from particles that may blow back toward your face.  
• Always comply with factory specifications on settings  
and adjustments when installing new parts, making  
repairs, or performing routine service procedures.  
• Never use high pressure air directly against your skin  
to clean dirt and debris - the air pressure could actu-  
ally force foreign material or fluids into your skin,  
causing serious injuries.  
• Always test repairs before releasing units to cus-  
tomers, paying special attention to any items that are  
safety-related. Correct any problems noted, and re-  
check to ensure that the problems have been fully  
remedied.  
• Use care when filling tires - lawn and garden tractors  
utilize low pressure tires, and over-pressurization is  
hazardous to you and anyone who operates the  
equipment with improper tire pressures. Always con-  
sult the air pressure recommendations for the unit  
involved before adding additional air to the tires.  
• Make sure all safety and operating instruction decals  
are legible, properly located, and securely attached.  
Replace any decals that can’t be read or are in dan-  
ger of falling off.  
Grease & Lubricant Safety  
• Always advise equipment owners of any potential  
operating or safety problems that may be arising due  
to anticipated wear, and request that the owner  
address the problem before a hazard develops.  
• Normal service and maintenance involves the use of  
oils and greases that could present a fire hazard if  
not handled properly. Always dispose of oily rags  
properly to prevent fires caused by spontaneous  
combustion.  
• Never allow a unit to be placed back into service if a  
serious safety or operating problem is evident.  
Advise the owner of the problem and the possible  
hazards associated with the problem, and request  
permission to correct the deficiencies.  
• Spilled lubricants pose dangerous slip hazards and  
must be taken care of immediately. Wipe up spills  
carefully, or use absorbent materials to soak up  
spilled fluids. Always dispose of rags, paper towels,  
and other saturated absorbent properly.  
• Use extreme care when working on older models that  
do not have all of the latest safety devices and  
switches. Disengage the PTO and transmission  
before starting the unit, or commencing repairs.  
• Store oils and greases away from flame or other igni-  
tion sources. Petroleum-based fluids can be ignited  
by smoking materials and sparks - always treat oils  
and greases as potentially flammable materials.  
Always cap oil and grease containers when done  
using, and store or dispose of properly.  
• Always use care when removing or installing parts to  
prevent damage from dropping or rough handling.  
Support heavy parts properly to prevent damage or  
personal injury to yourself and others.  
1-2  
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Safety Rules  
General Information  
INSPECTION  
GENERAL REPAIR INFORMATION  
Once cleaned, bearings can be properly inspected for  
wear, scratches, visible damage such as corrosion,  
cracked seals or scorching, and rough, or noisy, opera-  
tion. Bushings can be visually checked for scratches,  
uneven wear, or other visual damage.  
In addition to providing specific repair procedures for the  
equipment listed at the beginning of this section, this  
manual provides the following additional general instruc-  
tions for dealing with repairs to various types of compo-  
nents.  
LUBRICATION  
This information is designed to help you deal more effec-  
tively with these components by providing basic service  
knowledge and other useful tips.  
After passing inspection, bearings and bushings should  
be lubricated in accordance with factory specifications,  
and reinstalled according to the appropriate installation  
instructions. New bearings and bushings must also be  
properly lubricated before use. For optimal performance,  
and as a practical preventive maintenance measure,  
bearings and bushings used in pairs or multiple sets  
should all be replaced at the same time.  
Bearings & Bushings  
Roller bearings, ball bearings, and bushings are used to  
provide support to rotating shafts and other parts such as  
gears, pulleys, and sprockets that are used to transmit  
rotary motion. Over time, bearings and bushings may  
require additional lubrication to transmit this rotary  
motion with minimal friction, or may need replacement  
due to normal operation and wear. Normal service for  
bearings and bushings includes removal, cleaning,  
inspection, lubrication, and replacement.  
Belts & Pulleys  
Belts and pulleys transmit rotary motion from power  
sources to work components, providing the force needed  
to drive transmissions, operate mower decks, and power  
various attachments. This continual use eventually  
causes belts to wear out, and over time may also require  
the replacement of pulleys and pulley bearings.  
REMOVAL  
Belt wear and various types of damage are easily  
checked by visual examination, which is covered in  
greater detail elsewhere in this manual. Pulleys may  
also be checked visually for wear or apparent damage,  
but pulley bearings usually require removal, cleaning,  
and inspection to determine if replacement is required.  
Most bearings and bushings used on the listed equip-  
ment can be easily removed by following the appropriate  
detailed procedures found throughout this manual. Care  
should always be exercised to avoid scratching or dam-  
aging the bearing or bushing, the mounting shaft, and  
surrounding components. Bearing or bushing removal is  
usually necessary when excessive play or wobble is  
noticed on the part it supports, when unusual noise or  
vibration is apparent, or when a burning smell is present  
at the bearing location.  
Belt and pulley life can be optimized by making sure that  
proper belt tension and alignment are observed when  
belts are installed. Proper belt tension and alignment  
should also be maintained by performing periodic checks  
and adjustments. In addition, only factory authorized  
replacement belts will minimize problems caused by  
size, thermal instability, and variations in quality.  
CLEANING  
Sealed bearings and bushings can be cleaned by careful  
wiping with a cloth. Bearings with one-sided or remov-  
able shields and plain bushings can be cleaned by  
immersion in safety solvent, and brushing with a part  
cleaning brush. Oil-impregnated bushings, and bushings  
made of nylon or other synthetic materials, can be  
cleaned with safety solvents, or wiped clean, but should  
not be immersed in solvent for periods longer than that  
necessary to remove heavy or caked-on build-ups of  
grease. All petroleum-based solvents are flammable, so  
appropriate precautions regarding flames, sparks, and  
other ignition sources should always be observed.  
Gasoline should never be used because of its volatility  
and its highly toxic nature.  
Electrical Parts  
The electrical parts used on these units have been  
specifically engineered for outdoor power equipment,  
and are designed to provide years of reliable operation.  
As with all electrical components and systems, electrical  
contacts must be kept clean and dry, and all terminations  
must be securely fastened or connected. Also, all elec-  
trical components, wiring, and connectors should be peri-  
odically inspected for corrosion, signs of excessive heat  
build-up, or other damage that signals that it is time to  
repair or replace the item.  
Specific procedures for electrical troubleshooting and  
most common repairs is covered in separate sections of  
this manual.  
1-3  
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General Information  
Safety Rules  
Fasteners & Hardware  
Required Tools & Equipment  
All hardware and fasteners used in this equipment must  
meet factory specifications for SAE grade, size, and  
torque, and must be kept securely tightened. Locking  
hardware that degrades with use should be replaced  
when service is performed in affected areas. Always  
observe factory specifications for torque, or consult the  
torque chart for torque information.  
All repairs in this manual can be accomplished with stan-  
dard mechanic’s hand tools. The use of appropriate  
power tools such as impact wrenches and power drivers  
may aid in part removal and replacement, but care must  
be exercised to avoid causing damage to components  
from excessive tightening. Transmission service, steer-  
ing service, tire and wheel service, and service to com-  
ponents located under the frame also requires the use of  
a jack with suitable capacity, and jack stands to support  
the unit being worked on.  
Genuine Replacement Parts  
Only factory authorized replacement parts should be  
used when making repairs or performing routine mainte-  
nance. The use of parts that do not meet stringent facto-  
ry specifications can cause poor performance, premature  
failures, and lead to potential safety hazards. In addition,  
the use of non-factory authorized replacement parts will  
void your warranty.  
Systems Checks  
In addition to performing individual component service,  
components affected by related parts changes should  
also receive attention at the time service is performed.  
Examples of this include part replacements that are part  
of a safety device, electrical components, transmission  
components, and pulleys that are part of the same power  
delivery system. Giving attention to related parts will  
help ensure that the parts most likely to be affected by  
the wear of similar or nearby parts, or parts subjected to  
the same amount of stress or wear, are given appropri-  
ate attention before a failure can occur.  
Hydraulic Parts  
Hydraulic parts are adversely affected by dirt and conta-  
mination, and care must be exercised when performing  
service on these parts to prevent foreign material from  
entering. Specific service information appears else-  
where in this manual, and all precautions and proce-  
dures must be followed when repairing or servicing these  
parts.  
Paint  
The paint on outdoor power equipment provides for an  
attractive appearance, as well as a barrier to corrosion  
caused by exposure to moisture in the environment.  
Scratches, abrasions, and other damage to painted sur-  
faces should be repaired promptly to prevent the forma-  
tion of rust and premature part failure. Factory supplied  
paints are available that provide both an accurate color  
match and superior corrosion resistance.  
1-4  
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Safety Rules  
General Information  
NOTES  
1-5  
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Power Steering Conversion Kit  
Installation Instructions  
Power Steering Conversion Components  
8
18  
13  
12  
15  
19  
9
7
14  
16  
2
11  
5
10  
17  
6
1
4
20  
21  
3
22  
24  
25  
24  
12  
26  
34  
23  
33  
12  
25  
41  
32  
31  
35  
26  
37  
28  
36  
29  
30  
40  
27  
39  
38  
Figure 1. Contents  
2-1  
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Installation Instructions  
Power Steering Conversion Kit  
Ref Part No. Qty. Description  
1
2
3
4
5
6
7
8
9
1733139A  
1733044A  
1924856  
1960655  
1960636  
1933988  
1733363  
1725024  
1733790  
1
1
4
2
2
2
1
1
1
1
1
3
1
1
1
1
2
4
4
3
2
6
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TOWER, Steering  
PLATE, Support  
SCREW,Taptite 5/16-18 x 1/2  
CARRIAGE BOLT, 5/16-18 x 1-1/4  
NUT, KEPS, 5/16-18  
NUT, Push, 5/16  
STEERING WHEEL  
CAP, Steering Wheel  
TILT STEERING UNIT  
ADAPTER, Titt  
PLATE, Mounting  
WASHER, 5/8  
NUT, HEX, 5/8-18  
POWER STEERING Assembly, 5-Port  
TUBE, Hydraulic  
10 1725294  
11 1724685A  
12 1924366  
13 1960576  
14 1733506  
15 1733727  
16 1733211  
17 1733230  
18 2860444  
19 1916964  
20 1701011  
21 1935225  
22 1960368  
23 1732759A  
24 1931350  
25 1611705  
26 1930645  
27 1732937A  
28 1732439  
29 1702779  
30 1960355  
31 1719725  
32 1919262  
33 1960713  
34 1733912A  
35 1960714  
36 1734011  
37 1709189  
38 1713578  
39 1960519  
40 1733229A  
41 1733717A  
TEE FITTING  
FITTING, Perma-Push  
SCREW, HEX, M6 x 16mm  
WASHER, LOCK, 1/4  
TIE, Self Locking  
NUT, SPEED, 5/16-18  
NUT, SPEED, 1/4-20  
TIE ROD  
BOLT, 3/8-16 x 1  
SPACER  
NUT, Flange, Lock 3/8-16  
FRONT AXLE Assembly  
STEERING CYLINDER  
BALL JOINT  
NUT, Hex, Lock ESNA, 1/2-13  
SPACER  
NUT, Hex, Jam, 1/2-20  
SCREW, Hex, M16-110mm  
SPACER  
NUT, Lock, 1/2-20  
PIN, HitchH  
PIN, Klik  
ROD, 1/2 x 7-5/8  
NUT, PUSH, 1/2  
HITCH, 54 Inch Mower  
HITCH, 44/50 Inch Mower  
2-2  
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Power Steering Conversion Kit  
Installation Instructions  
DANGER  
NOTE: Read through these instructions, the  
SERVICE MANUAL, and OPERATOR’S MANUAL  
before beginning installation.  
PREVENT SERIOUS INJURY OR  
DEATH FROM FALLING UNIT  
WARNING  
Before beginning any service work turn off the  
PTO, set the parking brake, turn off the ignition,  
and disconnect the spark plug wire(s).  
Always use a properly working lifting device with  
a capacity suitable for the weight of the unit being  
serviced.  
Always use a jack stand to support the unit while  
performing service and chock remaining wheels  
to prevent the unit from rolling off the supports.  
INITIAL ASSEMBLY  
Hitch Replacement  
Never work under or around an elevated unit that  
is not properly supported and secured in position  
with wheel chocks.  
1. Remove mower deck. See OPERATOR’S  
MANUAL.  
2. Remove hitch (A, Figure 1) from mower deck.  
Note: Hardware used to attach leveling rod to hitch must  
be saved and re-used during reassembly.  
3. Remove spring (D, Figure 1) and lever (C) from  
original hitch (A).  
Front Axle Replacement  
1. Remove hood assembly, dash assembly, seat and  
seat deck. See SERVICE MANUAL, Section 15 -  
Hood & Dashboard Service, and Section 16 - Seat  
Deck & Fuel Tank Service.  
4. Discard original hitch and mounting hardware used to  
attach hitch to mower deck.  
5. Install spring (D) and lever (C) to new hitch (B)  
removed in step 3.  
NOTE: Clean and remove all debris from work area.  
2. Disconnect and remove the battery.  
C
D
A
WARNING  
Be careful when handling the battery. Avoid  
spilling electrolyte. Keep flames and sparks away  
from the battery.  
When removing or installing battery cables,  
disconnect the negative cable FIRST and reconnect  
it LAST. If not done in this order, the positive  
terminal can be shorted to the frame by a tool.  
B
H
F
3. Block both rear tires to prevent rolling; elevate and  
support the front end to allow adequate access for  
removal of the front axle.  
G
B
E
Figure 2 Hitch Replacement  
A. Original Hitch  
C. Lever  
B. New Hitch  
D. Spring  
E. Rod  
G. Hitch Pin  
F. Push Nut  
H. Klik Pin  
6. Install new rod (E, Figure 2) to new hitch (B), and  
secure in place with push nut (F).  
7. Install new hitch (B) to mower deck using new hitch  
pin (G) and secure with klik pin (H).  
SEE OPERATOR’S MANUAL.  
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Installation Instructions  
Power Steering Conversion Kit  
4. Remove front bumper (A, Figure 3) by removing the  
four 5/16-18 Torx screws (C). Save all parts for  
reassembly.  
9. Remove spacer (A, Figure 5) from original axle cen-  
ter mount (B). Inspect spacer for wear. Replace  
spacer if excessive wear is indicated.  
5. Remove muffler lower heat shield (B, Figure 3) by  
removing the four 1/4-20 whiz lock screws (D). Save  
all parts for reassembly.  
B
6. Loosen but do not remove all four 3/8-16 support  
plate bolts (E, Figure 2).  
E
D
A
C
Figure 5 Spacer Removal  
A. Spacer  
B. Original Axle  
E
10. Thread 1/2-20 jam nut (D, Figure 6) onto steering  
cylinder (B). Then attach ball joint (C) to steering  
cylinder (B).  
D
C
11 Attach spacer (E), ball joint (C), and 1/2-13 lock nut  
(F) to mount (K) on axle as shown.  
A
B
Figure 3 Bumper and Heat Shield Removal  
A. Bumper  
B. Lower Heat Shield  
C. Torx Screws, 5/16-18  
D. Whiz Lock Screws, 1/4-20  
E. Whiz Lock Screws, Support Plate, 3/8-16  
12. Attach steering cylinder (B) to axle (A) using  
a M16 x 110mm capscrew (I), two 5/8 flat washers  
(H), a spacer (G), and M16 lock nut (J) as shown.  
13. Tighten lock nut (J) to 150 ft. lbs (203.4 Nm).  
14. Tighten lock nut (F) to 48 ft. lbs (60.3 Nm).  
7. Remove front axle and steering linkage. See  
SERVICE MANUAL, SECTION 8 - Steering & Front  
Wheel Repair.  
H
J
8. Remove J-hook (A, Figure 4) from original axle (B).  
Save J-hook (A), 7/16-14 x 2 capscrews (C), and  
7/16-14 lock nuts (D) for installation on new axle.  
G
A
H
D
K
B
I
E
D
C
F
Figure 6 Steering Cylinder Installation  
C
B
A. New Axle  
C. Ball Joint  
E. Spacer  
B. Steering Cylinder  
A
D. Jam Nut, 1/2-20  
F. Lock Nut, 1/2-13  
H. Flat Washer, 5/8  
Figure 4 J-Hook Removal  
A. J-Hook  
C. Capscrews, 7/16-14 x 2 D. Lock Nuts, 7/16-14  
G. Spacer  
B. Original Axle  
I. Capscrew, M16 x 110mm J. Lock Nut, M16  
K. Mount, Ball Joint  
2-4  
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Power Steering Conversion Kit  
Installation Instructions  
16. Attach tie rod (B, Figure 8) to new axle (A) using two  
spacers (C), two 3/8-16 x 1 square head bolts (D),  
and two 3/8-16 flange nuts (E) as shown.  
Do not allow dirt, water, or other debris to  
enter the expansion chamber or  
transmission. Even a small amount of dirt  
can damage the transmission  
Tighten flange nuts to 19.5 ft. lbs (26.5 Nm).  
17. Clean and grease spacer (B, Figure 9) previously  
removed from old axle. Then install spacer (B) into  
new axle (A) as shown.  
The hydraulic system is powered by the hydrostatic  
transmission charge pump, and subsequently shares oil  
with the transmission. It is for this reason that great care  
must be taken when adding or replacing hydraulic  
system parts to prevent contaminants from entering the  
transmission.  
15. Install hydraulic perma-push fittings  
(B, Figure 7) to steering cylinder (A) as shown.  
A
B
Figure 9 Spacer Installation  
A. New Axle  
B. Spacer  
B
A
Figure 7 Hydraulic Fitting Installation  
A. Steering Cylinder  
B. Perma-Push Fittings  
18. Install j-hook (B, Figure 10) to new axle (A) using two  
7/16-14 x 2 capscrews (C), and two 7/16-14 lock nuts  
(D) as shown. Tighten lock nuts to 32 ft. lbs (44.2  
Nm).  
D
B
D
D
C
C
A
E
A
C
B
E
Figure 10 J-Hook Installation  
A. New Axle  
C. Capscrew, 7/16-14 x 2  
B. J-Hook  
D. Lock Nuts, 7/16-14  
Figure 8 Tie Rod Installation  
A. New Axle  
C. Spacers  
3/8-16 x 1  
B. Tie Rod  
D. Square Head Bolt,  
E. Flange Nut, 3/8-16  
2-5  
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Installation Instructions  
Power Steering Conversion Kit  
19. Install new axle (A, Figure 11) between axle support  
plate (B) and frame (C) using a 5/8-11 x 3-1/2 cap-  
screw (D), two 5/8 flat washers (E), and a 5/8-11  
flange nut (F) as shown. Tighten flange nut to 150 ft.  
lbs (204 Nm).  
21. Install heat shield (A, Figure 12) using four 1/4-20  
Whiz Lock screws (B) as shown.  
Tighten screws to 10 ft. lbs (13.6 Nm).  
NOTE: Replace any speed nuts (E) broken or missing  
from heat shield with parts from kit.  
22. Tighten all four 3/8-16 support plate bolts  
(E, Figure 2) to 19.5 Ft. lbs (26.5 Nm  
22. Install bumper (C, Figure 12) using four 5/16-18 x 7/8  
Torx screws (D) as shown.  
Tighten screws to 7 ft. lbs (9.75 Nm).  
NOTE: Replace any speed nuts (F) broken or missing  
from bumper mounts with parts from kit.  
B
C
B
D
D
F
D
C
C
B
C
D
A
A
E
Figure 12 Bumper and Heat Shield Installation  
A. Heat Shield  
B. Whiz Lock Screws, 1/4-20  
C. Bumper  
D. Torx Head Screw, 5/16-18 x 7/8  
E. Speed Nut, 1/4-20  
F. Speed Nut, 5/16-18  
Figure 11 New Axle Installation  
A. New Axle  
B. Axle support Plate  
C. Frame  
D. Capscrew, 5/8-11 x 3-1/2  
E. Flat Washers, 5/8  
F. Flange Nut, 5/8-11  
2-6  
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Power Steering Conversion Kit  
Installation Instructions  
NOTE: Attach new push nuts to carriage bolts (supplied  
with kit) as required.  
Steering Replacement  
Tear-down and Removal of Steering System  
2. Attach new power steering unit (B, Figure 14) to new  
tower (A) using four M6 x 16 mm screws (C), and  
four 1/4 lockwashers (D).  
1. See the SERVICE MANUAL, Section 10 -  
Hydraulic System Service for removal and  
installation of the valve control spool.  
Tighten screws to 97 in. lbs (10.96 Nm).  
2. Remove the control spool & support from the tower  
assembly, and save all hardware for reinstallation.  
3. Disconnect and discard the return side tube to the  
control spool.  
4. Disconnect and discard T-fitting, and tube to  
transmission between torque generator and control  
spool.  
5. See the SERVICE MANUAL, Section 8 - Steering &  
Front Wheel Repair for removal of steering wheel,  
torque generator, steering gear, and drag link.  
6. Remove and discard the steering wheel, mounting  
plate, tilt steering unit, tilt adapter, steering shaft,  
steering mounting plate, steering gear assembly,  
torque generator, and drag link.  
C
7. Remove and discard tower.  
D
New Steering System Assembly  
1. Install steering support plate (B, Figure 13) into new  
tower (A) using four 5/16-18 x 1/2 Taptite screws (C).  
Tighten screws to 7 ft. lbs (9.75 Nm).  
A
B
C
Figure 14 Power Steering Installation  
A. New Tower  
B. New Power Steering Unit  
C. Screws, M6 x 16 mm  
D. Lock Washers, 1/4  
B
C
A
Figure 13 Steering Support Plate Installation  
A. New Tower  
B. New Steering Support Plate  
C. Taptite Screws, 5/16-18 x 1/2  
2-7  
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Installation Instructions  
Power Steering Conversion Kit  
NOTE: For initial installation, only two screws are used  
(as shown) and the screws are to be loosely installed to  
allow the tower to pivot.  
4. Install control valve spool and support (B, Figure 16)  
to the new tower (A) using (previously removed) four  
5/16-18 x 3/4 carriage bolts (C), and four 5/16-18  
KEPS lock nuts (D).  
3. Attach new tower assembly (A, Figure 15) to frame  
(A) using two 3/8-16 x 3/4 taptite screws (C).  
Tighten lock nuts to 7 ft. lbs (9.75 Nm).  
B
A
D
C
A
C
C
Figure 16 Control Valve Spool & Support Installation  
A. New Tower Assembly  
B
B. Control Valve Spool & Support  
C. Carriage Bolts, 5/16-18 x 3/4  
D. Lock Nuts, KEPS, 5/16-18  
Figure 15 Tower Assembly Installation  
A. New Tower Assembly  
B. Frame  
C. Taptite Screws, 3/8-16 x 3/4  
2-8  
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Power Steering Conversion Kit  
Installation Instructions  
A
C
E
B
G
L
D
F
I
H
L
J
K
Figure 17 Power Steering & Hydraulic Hose  
Installation  
A. Power Steering Unit  
B. Control Valve Spool  
C. Three-way “T”  
F. Hydraulic Hose (Port P) to hydraulic tube  
G. Hydraulic Hose (Port R) to steering cylinder  
H. Hydraulic Hose (Port L) to steering cylinder  
I. Hydraulic Hose (Port E) to control valve spool  
J. Hydraulic Tube to Transmission from “T” fitting  
K. Hydraulic Tube from spool to “T” fitting  
L. Taptite Screws, 3/8-16 x 3/4  
D. Hydraulic Tube (from Port P to Transmission)  
E. Hydraulic Hose (Port T) to “T” fitting  
5. Attach existing tube (K, Figure 17), and existing tube  
(J) to new three-way “T” (C) as shown.  
8. Route hydraulic hoses(G) and (H) (labeled “Port R”  
and “Port L”) out the bottom of the bulkhead heat-  
shield, and through the frame as shown in Figure 17  
and Figure 19.  
6. Wrap hydraulic hose (E) (labeled “Port T”) around the  
back of the power steering unit (A), and attach it to  
the new three-way “T” (C) as shown.  
9. Attach hydraulic tube (D) to hydraulic hose (F)  
(labeled “Port P”) as shown.  
7. Loop hydraulic hose (I) (labeled “Port E”) around the  
front of the power steering unit (A), and attach the  
hose fitting to the control valve spool (B) as shown.  
10. Install two 3/8-16 x 3/4 Taptite screws (L) as shown.  
Tighten all four screws to 30 ft. lbs (40.8 Nm).  
2-9  
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Installation Instructions  
Power Steering Conversion Kit  
11. Attach hydraulic tube (B, Figure 18) to transmission  
(A) as shown.  
D
B
A
B
C
A
Figure 18 Hydraulic Tube to Transmission  
A. Transmission Port  
B. Hydraulic Tube  
Figure 20 Steering Hose Connection  
A. Steering Cylinder  
B. Hydraulic Hose (labeled “Port L”)  
C. Hydraulic Hose (labeled “Port R”)  
D. Tie Wraps  
12. Route and attach hydraulic hose (B, Figure 20)  
(labeled “Port L”) to hose fitting on left side of steer-  
ing cylinder (A) as shown.  
C
13. Route and attach hydraulic hose (C) (labeled “Port  
R”) to hose fitting on right side of steering cylinder (A)  
as shown.  
A
D
B
14. Secure hydraulic hoses (B) and (C) to frame using  
tie wraps (D) as shown.  
NOTE: The hoses must be secured to the frame to  
prevent any movement and prevent contact with the  
steering or clutch.  
Figure 19 Hydraulic Hose Routing  
A. Bulkhead Heatshield  
B. Frame  
C. Hydraulic Hose (labeled “Port R”)  
D. Hydraulic Hose (labeled “Port L”)  
2-10  
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Power Steering Conversion Kit  
Tilt & Steering Wheel Installation  
Installation Instructions  
8. Install mower deck. See the OPERATOR’S  
MANUAL.  
Battery, Dash, Seat Deck, Seat, and Hood  
Assembly Installation  
9. Start tractor and verify all hose connections are tight  
and do not leak.  
1. Install battery, but DO NOT connect.  
10. Check fluid level of transmission and add fluid as  
necessary. See the SERVICE MANUAL, Section 3  
- Maintenance Procedures for fluid requirement and  
levels.  
2. Install seat deck and seat. See the SERVICE  
MANUAL, Section 16 - Seat Deck & Fuel Tank  
Service.  
3. Install dash assembly, and hood assembly. See the  
SERVICE MANUAL, Section 15 - Hood &  
Dashboard Service.  
L
J
4. Install front tires. See the SERVICE MANUAL,  
Section 8 - Steering & Front Wheel Repair.  
I
K
Base,Tilt, Boot, and Steering Wheel  
Installation  
1. Attach tilt adapter (C, Figure 21) to tilt assembly (F),  
and secure in place with included fastener.  
H
2. Attach mounting plate (D), spacers (E), tilt  
assembly (F) to dash (A) using installed carriage  
bolts (B), and two 5/16-18 KEPS nuts (G) as shown.  
Tighten nuts to 23 ft. lbs (31 Nm).  
3. Install boot (H) over tilt assembly (F) so that tilt lever  
extends out of boot.  
G
NOTE: Make sure that base of boot (H) is secured to  
mounting plate (D) - boot over lip edge of base.  
G
F
4. Install steering wheel (I) onto tilt assembly (F).  
Secure using a 5/8 washer (J), and a 5/8-18 nut (K).  
Tighten nut to 180-240 in. lbs (20.3-27.1 Nm).  
E
D
5. Attach steering wheel cap (L) to steering wheel (I).  
Tabs on cap snaps into slots on steering wheel.  
C
B
6. Check and verify that all parts removed have been  
reinstalled, and tightened correctly.  
A
WARNING  
Be careful when handling the battery. Avoid  
spilling electrolyte. Keep flames and sparks away  
from the battery.  
Figure 21 Base, Tilt, Boot and Steering Wheel  
Installation  
A. Dash  
B. Carriage Bolts  
C. Tilt Adapter  
D. Mounting Plate  
E. Spacers  
F. Tilt Assembly  
G. KEPS Nuts, 5/16-18  
H. Boot  
I. Steering Wheel  
J. Washer, 5/8  
When removing or installing battery cables,  
disconnect the negative cable FIRST and reconnect  
it LAST. If not done in this order, the positive  
terminal can be shorted to the frame by a tool.  
7. Connect battery. See the OPERATOR’S MANUAL -  
Battery Maintenance.  
K. Nut, 5/8-18  
L. Steering Wheel Cap  
2-11  
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Installation Instructions  
Torque Specifications  
Hardware Identification & Torque Specifications  
Common Hardware Types  
Torque Specification Chart  
FOR STANDARD MACHINE HARDWARE (Tolerance 20%)  
Hex Head Capscrew  
Washer  
No  
Marks  
Hardware  
Lockwasher  
Grade  
Carriage Bolt  
SAE Grade 2  
SAE Grade 5  
SAE Grade 8  
Hex Nut  
Size Of  
in/lbs  
in/lbs  
in/lbs  
Hardware ft/lbs  
Nm.  
2.1  
2.3  
3.1  
3.5  
7.6  
ft/lbs  
Nm.  
3.4  
3.5  
4.9  
5.5  
10.9  
13.6  
23.1  
25.8  
40.8  
ft/lbs  
Nm.  
4.6  
4.9  
6.8  
7.7  
16.3  
19.0  
34.0  
34.0  
61.2  
Standard Hardware Sizing  
8-32  
8-36  
19  
20  
30  
31  
43  
49  
8
10  
17  
19  
30  
35  
50  
55  
75  
41  
43  
60  
68  
12  
14  
25  
27  
45  
When a washer or nut is identified as 1/2”, this is the  
Nominal size, meaning the inside diameter is 1/2 inch; if a  
second number is present it represent the threads per inch  
10-24  
10-32  
1/4-20  
1/4-28  
5/16-18  
5/16-24  
3/8-16  
3/8-24  
7/16-14  
7/16-20  
1/2-13  
1/2-20  
9/16-12  
9/16-18  
5/8-11  
5/8-18  
3/4-10  
3/4-16  
7/8-9  
27  
31  
66  
76  
11  
12  
20  
23  
30  
35  
50  
55  
65  
75  
90  
100  
160  
180  
140  
155  
220  
240  
When bolt or capscrew is identified as 1/2 - 13 x 2”, this  
means the Nominal size, or body diameter is 1/2 inch; the  
second number represents the threads per inch (13 in this  
example, and the final number is the body length of the  
bolt or screw (in this example 2 inches long).  
8.6  
15.0  
16.3  
27.2  
31.3  
40.8  
47.6  
68.0  
74.8  
88.4  
102.0  
122.4  
136  
217.6  
244.8  
190.4  
210.8  
299.2  
326.4  
The guides and ruler furnished below are designed to  
help you select the appropriate hardware and tools.  
47.6  
68.0  
74.8  
50  
70  
80  
68.0  
95.2  
0
108.8  
149.6  
163.2  
204.0  
231.2  
299.2  
326.4  
525.0  
571.2  
816.0  
897.6  
1/4  
102.0  
122.4  
149.6  
163.2  
204.0  
244.8  
353.6  
408.0  
544.0  
598.4  
788.8  
110  
120  
150  
170  
220  
240  
386  
420  
600  
660  
Nut, 1/2”  
90  
1/2  
Inside  
Diameter  
110  
120  
150  
180  
260  
300  
400  
440  
580  
640  
3/4  
1
2
3
4
1/4  
1/2  
3/4  
7/8-14  
1-8  
1-12  
Screw, 1/2 x 2  
900 1,244.0  
Body  
Diameter  
870.4 1,000 1,360.0  
1/4  
NOTES  
1/2  
1. These torque values are to be used for all hardware  
excluding: locknuts, self-tapping screws, thread forming  
screws, sheet metal screws and socket head setscrews.  
2. Recommended seating torque values for locknuts:  
a. for prevailing torque locknuts - use 65% of grade 5  
torques.  
b. for flange whizlock nuts and screws - use 135% of  
grade 5 torques.  
3. Unless otherwise noted on assembly drawings, all torque  
values must meet this specification.  
Body  
Length  
3/4  
1/4  
1/2  
3/4  
Wrench & Fastener Size Guide  
1/2  
DIA.  
7/16  
DIA.  
3/8  
5/16  
1/4  
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NOTES  
Form No. 1733944-00  
Rev. 02/2007  
TP 200-4492-00-SK-SMAN  
MANUFACTURING, INC.  
Briggs & Stratton Yard Power Products Group  
Copyright © 2007 Briggs & Stratton Corporation  
Milwaukee, WI USA. All Rights Reserved  
500 N Spring Street / PO Box 997  
Port Washington, WI 53074-0997 USA  
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