Triplex Ceramic
Plunger Pump
OperatingInstructions/
Repair and Service
Manual
Model
GP7132 & GP7136
Contents:
InstallationInstructions:
page 2
Pump Specifications GP7132: page 3
Exploded View:
Parts List/Kits
page 4
page 5
Pump Specifications GP7136: page 6
Repair and Service:
TorqueSpecs:
TroubleShootingChart:
Recommended Spare
Parts List:
Dimensions:
WarrantyInformation:
pages 7-9
page 9
page 10
page 10
page 11
back page
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Specifications
Model GP7132
Volume ........................................................................................................ Up to 23.4 GPM
Discharge Pressure .................................................................................... Up to 4350 PSI
Speed .......................................................................................................... Up to 750 RPM
Inlet Pressure.............................................................................................. Up to 90 PSI
Plunger Diameter........................................................................................ 32mm
Plunger Stroke ............................................................................................ 52mm
Crankshaft Diameter .................................................................................. 48mm
KeyWidth ................................................................................................... 14mm
Crankshaft Mounting .................................................................................. Either side
Shaft Rotation ................................................................................ Top of pulley towards manifold
Temperature of Pumped Fluids................................................................... Up to 140 oF
Inlet Ports ................................................................................................... (2) 1 1/4" NPT
Discharge Ports .......................................................................................... (2) 3/4" NPT
Weight......................................................................................................... 374 lbs.
Crankcase Oil Capacity .............................................................................. 1.6 Gal.
Fluid End Material....................................................................................... Stainless Steel
Volumetric Efficiency @ 700 RPM ............................................................ 94%
Mechanical Efficiency @ 700 RPM .......................................................... 83%
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
NPSHR Chart
Decible Chart
95
90
85
80
75
70
26.2
23.0
19.7
16.4
13.1
9.8
n-750 (1/min)
n-500 (1/min)
n-300 (1/min)
6.6
3.3
0
1500
3000
4500
0
500
600
700
800
PSI
RPM
GP7132 HORSEPOWER REQUIRMENTS
RPM
300
400
550
600
650
700
750
GPM
9.4
1000 PSI 1400 PSI 2000 PSI 2500 PSI 3000 PSI 4350 PSI
6.7
8.9
9.4
13.4
17.8
24.5
26.7
29.0
31.2
33.4
16.7
22.3
30.6
33.4
36.2
39.0
41.8
20.1
26.7
36.8
40.1
43.5
46.8
50.1
29.1
38.8
53.3
58.2
63.0
67.9
72.7
12.5
17.2
18.7
20.3
21.8
23.4
12.5
17.2
18.7
20.3
21.8
23.4
12.3
13.4
14.5
15.6
16.7
HORSEPOWER RATINGS:
We recommend a 1.1 service factor be specified
when selecting an electric motor as the power
The rating shown are the power requirements for the source.
pump. Gas engine power outputs must be
approximately twice the pump power requirements
shown above.
To compute specific pump horsepower requirements,
use the following formula:
GPM X PSI
1400
3
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Exploded View - GP7132 and GP7136 Pumps
4
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GP7132 and GP7136 PARTS LIST
ITEM
1
2
4
5
8
9
10
11
12
13
14
15
16
20
20A
21
22
23
24
24A
24B
25
28
30
30A
30B
30C
30D
31
32
32A
33
33A
33B
33C
34
PART
07600
13000
07601
07602
07603
01009
13133
06725
07109
07182
07607
07608
07184
07610
07611
07612
13405
07614
13182
07616
08041
13183
13184
07619
07225-0100
13136
07622
13154
07623
07624
07625
07626
07627
07628
07249
13137
06091
DESCRIPTION
Crankcase
Oil Filler Plug Assembly
CrankcaseCover
Seal for Cover
Oil Dip Stick
O-Ring, Dip Stick
HexagonScrew
SpringWasher
Drain Plug
Gasket, Drain Plug
BearingCover
RadialShaftSeal
O-Ring, Bearingcover
Taper Roller Bearing
Fitting Disc (Shim)
Shaft Protector
Crankshaft
QTY.
1
1
1
1
1
1
12
12
2
2
2
2
2
2
1-5
1
1
1
3
6
6
3
3
1
8
4
8
1
1
3
3
3
3
3
ITEM
36D
38
38A
38B
39
PART
07665
06093
13141
13142
06094
06794
13360
13291
06095
06795
06096
06796
06097
06797
06098
13159
13160
06798
13162
13146
12056
07354
13131
13130
07062
13147
13148
06078
13149
07699
07700
07693
07702
07703
07704
12253
13150
12251
13151
07662
DESCRIPTION
Copper Ring
SealCase
O-Ring, SealCase
Support Ring
SealSleeve,GP7132
SealSleeve,GP7136
Grooved Ring, GP7132
Grooved Ring, GP7136
Pressure Ring, GP7132
Pressure Ring, GP7136
V-Sleeve,GP7132
V-Sleeve,GP7136
Sleeve Support Ring, GP7132
Sleeve Support Ring, GP7132
Tension Spring
Stud Bolt
Nut
ValveCasing
Cylinder Stud
Inlet Valve Assy.
Support Ring
O-Ring
Inlet Valve Seat
ValvePlate
Valve Spring
QTY.
3
3
6
6
3
3
3
3
3
3
6
6
3
3
3
8
8
1
2
3
6
6
3
6
6
6
3
3
3
3
3
3
39
39A
39A
41
41
42
42
43
43
45
49
49A
50
50A
51
51A
51B
51C
51D
51E
51F
52
57
52C
58
58A
58B
58C
59
59A
60
60
61
61
62
Key
Connecting Rod Assy.
Fitting Screw
Washer
Crosshead Assy.
Crosshead Pin
Cover Plate
HexagonScrew
Grommet
Washer
Cover
Eye Bolt
RadialShaftSeal
Compact Ring
SealRetainer
O-Ring , Seal Retainer
Circlip, Seal Retrainer
Shim
Spacer Pipe
Discharge Valve Assy.
Compression Spring
DischargeValveSeat
Plug
O-Ring
Support Ring
HexagonScrew
Plug, 3/4"
12
3
3
1
1
1
1
3
3
Copper Ring for 59
Plug, 3/4” NPT, GP7132
Plug, 3/4” BSP, GP7136
Plug, 1-1/4” NPT, GP7132
Plug, 1-1/4” BSP, GP7136
Tool for valve assembly
(not shown)
Flinger
36
Plunger Assembly (36A-36D)
GP7132
Plunger Assembly (36A-36D)
GP7136
3
36
06792
3
3
3
3
3
36A
36B
36B
36C
07667
06092
06793
07664
PlungerBase
1
1
1
Plunger Pipe, GP7132
Plunger Pipe, GP7136
TensioningScrew
66
67
13362
13358
Disc for Crankshaft
HexagonScrew
GP7132 and GP7136 PUMP REPAIR KITS
ValveAssembly Kit
Plunger Packing Kit
Plunger Packing Kit
#09520
# 09519 (GP7132)
# 09544 (GP7136)
Item Part # Description
51A 12056 Support Ring
51B 07354 O-Ring
51C 13131 Inlet Valve Seat
51D 13130 ValvePlate
51E 07062 Valve Spring
52C 13149 DischargeValveSeat
58A 07700 O-Ring
Qty.
6
6
3
6
6
3
3
6
Item Part # Description
38A 13141 O-Ring, Seal Case
38B 13142 Support Ring
39A 13360 Grooved Ring
Qty. Item Part # Description
Qty.
6
6
3
6
38A 13141 O-Ring, Seal Case
38B 13142 Support Ring
39A 13291 Grooved Ring
6
6
3
6
42
06096 V-Sleeve
42
06796 V-Sleeve
Oil Seal Kit
# 09225
Item Part # Description
58B 07693 Support Ring
Qty.
32
07624 Radial Shaft Seal
3
3
3
32A 07625 Ring
33A 07627 O-Ring
5
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Specifications
Model GP7136
Volume ........................................................................................................ Up to 28.3 GPM
Discharge Pressure .................................................................................... Up to 3625 PSI
Speed .......................................................................................................... Up to 750 RPM
Inlet Pressure.............................................................................................. -4.35 to 140 PSI
Plunger Diameter........................................................................................ 36mm
Plunger Stroke ............................................................................................ 52mm
Crankshaft Diameter .................................................................................. 48mm
KeyWidth ................................................................................................... 14mm
Crankshaft Mounting .................................................................................. Either side
Shaft Rotation ................................................................................ Top of pulley towards manifold
Temperature of Pumped Fluids................................................................... Up to 140 oF
Inlet Ports ................................................................................................... (2) 1 1/4" NPT
Discharge Ports .......................................................................................... (2) 3/4" NPT
Weight......................................................................................................... 374 lbs.
Crankcase Oil Capacity .............................................................................. 1.6 Gal.
Fluid End Material....................................................................................... Stainless Steel
Volumetric Efficiency @ 700 RPM ............................................................ 94%
Mechanical Efficiency @ 700 RPM .......................................................... 83%
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
NPSHR Chart
Decible Chart
26.2
23.0
19.7
16.4
13.1
9.8
95
90
85
80
75
70
n-700 (1/min)
n-500 (1/min)
n-300 (1/min)
6.6
3.3
0
750
1500
2250
3000
3750
0
200
400
600
800
(PSI)
RPM
GP7136 HORSEPOWER REQUIREMENTS
RPM
300
400
550
600
650
700
750
GPM
1000 PSI
1400 PSI
2000 PSI
2500 PSI
3625 PSI
29.3
11.3
15.0
20.8
22.6
25.0
26.4
28.3
8.1
11.3
15.0
20.8
22.6
25.0
26.4
28.3
16.1
21.4
29.7
32.3
35.7
37.7
40.4
20.2
26.8
37.1
40.4
44.6
47.1
50.5
10.7
14.9
16.1
17.9
18.9
20.2
38.8
53.9
58.5
64.7
68.4
73.3
HORSEPOWER RATINGS:
We recommend a 1.1 service factor be specified
when selecting an electric motor as the power
The rating shown are the power requirements for the source.
pump. Gas engine power outputs must be
approximately twice the pump power requirements
shown above.
To compute specific pump horsepower requirements,
use the following formula:
GPM X PSI
6
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GP7132 AND GP7136 REPAIR INSTRUCTIONS
NOTE: Alwaystaketimetolubricateallmetalandnon-metalpartswithalightfilmofoil
beforereassembling. Thisstepwillhelpensureproperfit,atthesametimeprotecting
thepumpnon-metalparts(elastomers)fromcuttingandscoring.
1. Lossen screws (58C), take
plugs (58) out of valve cas-
ing with two screws.
2. Take out complete valve
(51) using either tool (part
#07662) or stud bolt.
3. Valve seats (51C and 52C)
are pressed out of spacer
pipe (51F) by hitting the
valve plate (51D) with a
bolt.
S
P
51F
51E
51C
51B
51A
51C or 52C
or 52C
5. When reassembling: The
suction valve seat (51C) is
1mmsmallerindiameterthan
the discharge valve seat
(52C). Suction valve seats
are marked "S" and always
have to be installed first. Dis-
charge valve seats are
marked "P" and are always
tobe installed on top of suc-
tion valve. Plugs (58) are to
be tensioned down evenly
with screws (58C) and
4. Check surfaces of valve plate, valve seat, O-rings (51B, 58A) and
replace worn parts.
crosswise
155 ft-lbs.
at
6. Loosen nuts (49A)
7. Remove pump head.
7
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GP7132 AND GP7136 REPAIR INSTRUCTIONS
8. Separate plunger (36) from
9. Pull seal sleeves (39) out of
theirfittingsinthecrankcase.
Take seal case (38) out of
seal sleeve (39).
crosshead (25) by means of
one open-end wrench.
38A
38B
38
38B
38A
36
10. If o-rings (38A) or support rings (38B) are damaged, replace with
new parts. Examine plunger (36) for wear.
39A
39
41
42
43
45
11. Take a thin screw driver and pry out the grooved ring (39A).Note:
This seal (39A) will not be reusable, so replace with a new
part. For the seal-pack (41-43), remove with either a socket wrench
or use a screw driver to push against the rear lip of the pressure
ring (41) or v-sleeves (42).You will need to remove seals evenly
out of the seal sleeve (39). Be careful not to score the sleeve or
metal parts (41 & 43).
8
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GP7132 AND GP7136 REPAIR INSTRUCTIONS
CAUTION: Don't loosen the 3 plunger (36) before the valve casing has been removed otherwise the plunger
(36) could hit against the spacer pipe (51F) when the pump is being turned.
Seal life can be increased if the pretensioning allows for a little leakage. This assists lubrication
and keeps the seals cool. It is therefore not necessary to replace seals before the leakage
becomes too heavy and causes output and operating pressure to drop.
MOUNTING VALVE CASING
NOTE: Replace worn parts; grease seals with silicone before installing.
12. Check O-rings (38A) and support rings (38B) on seal case (38). Clean surfaces of seal sleeves in gear box
and sealing surfaces of valve casing. Reassemble seal sleeve (39) by placing plunger (36) in seal sleeve;
place pressure ring (41), v-sleeves (42), sleeve support ring (43), and tension spring (45) over plunger (36).
Place the seal case onto the seal sleeve and press into the crankcase, making sure that the weep hole on
the seal sleeve is facing down. Tighten tensioning screw (36C) for plunger onto crosshead (25) with an
open end wrench to 26 ft-lbs.
13. Push valve casing carefully onto O-rings of seal case and centering studs (50A). Tighten nuts (49A) to103
ft-lbs.
TO DISASSEMBLE GEAR
14. Take out plunger (36) and seal sleeves (39) as described above. Drain oil.
15. After removing the circlip ring (33B), lever out seal retainer (33) with a screw driver. Check seals
(32,32A,33A) and surfaces of crosshead.
16. Remove crankcase cover (4). Loosen inner hexagon screws on the connecting rods (24) and push con rod
halves as far into the crosshead guide as possible.
CAUTION: Connecting rods are marked for identification. Do not twist con rod halves. Con Rod is to be
reinstalled in the same position on shaft journals.
17. Check surfaces of connecting rod and crankshaft (22). Take out bearing cover (14) to one side and push
out crankshaft taking particular care that the connecting rod (24) doesn't bend.
CAUTION: Seal (32A) must always be installed so that the seal-lip on the inside diameter faces the oil.
Reassemble in reverse order: Regulate axial bearing clearance - minimum 0.1mm, maximum
0.15mm-by means of fitting disc (20A). The crankshaft (22) should turn easily with little
clearance. Tighten fitting screws (24A) to 30 ft.-lbs.
CAUTION: Connecting rod (24) has to be able to be slightly moved sidewise at the stroke journals.
GP7132 and GP7136 TORQUE SPECIFICATIONS
Position
24A
Item#
07616
07664
13160
07699
Description
Fitting Screw
Tensioning Screw
Nut
TorqueAmount
30 ft-lbs.
36C
49A
58
26 ft.-lbs.
103 ft.-lbs.
155 ft.-lbs.
Plug
9
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PUMPSYSTEMMALFUNCTION
MALFUNCTION
CAUSE
REMEDY
The Pressure and/
or the Delivery
Drops
Worn packing seals
Broken valve spring
Belt slippage
Replace packing seals
Replace spring
Tighten or Replace belt
Replacenozzle
Worn or Damaged nozzle
Fouled discharge valve
Fouled inlet strainer
Worn or Damaged hose
Worn or Plugged relief valve on pump
Cavitation
Clean valve assembly
Cleanstrainer
Repair/Replace hose
Clean, Reset, and Replace worn parts
Check suction lines on inlet of
pump for restrictions
Unloader
Check for proper operation
Water in crankcase
Noisy Operation
High humidity
Worn seals
Reduce oil change interval
Replace seals
Worn bearings
oilwith
Cavitation
Replacebearings,Refillcrankcase
recommended lubricant
Check inlet lines for restrictions
and/or proper sizing
Rough/Pulsating
Operation with
Pressure Drop
Worn packing
Inlet restriction
Replacepacking
Check system for stoppage, air
leaks, correctly sized inlet
plumbing to pump
Accumulator pressure
Unloader
Cavitation
Recharge/Replaceaccumulator
Check for proper operation
Check inlet lines for restrictions
and/or proper size
Pump Pressure as
gun
Pressure
Restricted discharge plumbing
Re-size discharge plumbing to Drop at
flow rate of pump
Rated,
Excessive
Leakage
Worn plungers
Replace plungers
Worn packing/seals
Excessivevacuum
Cracked plungers
Inlet pressure too high
Adjust or Replace packing seals
Reduce suction vacuum
Replace plungers
Reduce inlet pressure
High Crankcase
Temperature
Wrong Grade of oil
Improper amount of oil in crankcase
Giant oil is recommended
Adjust oil level to proper amount
Preventative Maintenance Check-List & Recommended Spare Parts List
Check
Daily
Weekly
50hrs
Every
500 hrs
Every
1500 hrs
Every
3000 hrs
Oil Level/Quality
Oil Leaks
Water Leaks
Belts, Pulley
Plumbing
X
X
X
X
X
Recommended Spare Parts
Oil Change (1 Gallon) p/n 1154
Plunger Packing Kits(1kit/pump)
(See page 5 for kit list)
ValveAssembly Kit (1 kit/pump)
(See page 5 for kit list)
X
X
X
X
X
Oil Seal Kit (1 kit/pump)
(See page 5 for kit list)
10
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GP7132 and GP7136 Dimensions (Inches)
11
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GIANTINDUSTRIESLIMITEDWARRANTY
Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from
defects in workmanship and material as follows:
1. For portable pressure washers and self-service car wash applications, the discharge
manifolds will never fail, period. If they ever fail, we will replace them free of charge.
Our other pump parts, used in portable pressure washers and in car wash
applications, are warranted for five years from the dateof shipment for all pumps used
in NON-SALINE, clean water applications.
2. One (1) year from the date of shipment for all other Giant industrial and consumer
pumps.
3. Six (6) months from the date of shipment for all rebuilt pumps.
4. Ninety (90) days from the date of shipment for all Giant accessories.
This warranty is limited to repair or replacement of pumps and accessories of which the
manufacturer’s evaluation shows were defective at the time of shipment by the manufacturer. The
following items are NOT covered or will void the warranty:
1. Defects caused by negligence or fault of the buyer or third party.
2. Normal wear and tear to standard wear parts.
3. Use of repair parts other than those manufactured or authorized by Giant.
4. Improper use of the product as a component part.
5. Changes or modifications made by the customer or third party.
6. The operation of pumps and or accessories exceeding the specifications set forth
in the Operations Manuals provided by Giant Industries, Inc.
Liability under this warranty is on all non-wear parts and limited to the replacement or repair of those
products returned freight prepaid to Giant Industries which are deemed to be defective due to
workmanship or failure of material. A Returned Goods Authorization (R.G.A.) number and
completed warranty evaluation form is required prior to the return to Giant Industries of all products
under warranty consideration. Call (419)-531-4600 or fax (419)-531-6836 to obtain an R.G.A.
number.
Repair or replacement of defective products as provided is the sole and exclusive remedy provided
hereunder and the MANUFACTURER SHALL NOT BE LIABLE FOR FURTHER LOSS, DAMAGES,
OR EXPENSES, INCLUDING INCIDENTAL AND CONSEQUENTIAL DAMAGES DIRECTLY OR
INDIRECTLY ARISING FROM THE SALE OR USE OF THIS PRODUCT.
THE LIMITED WARRANTY SET FORTH HEREIN IS IN LIEU OF ALL OTHER WARRANTIES OR
REPRESENTATION,EXPRESSORIMPLIED,INCLUDINGWITHOUTLIMITATIONANYWARRAN-
TIES OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND ALL SUCH
WARRANTIES ARE HEREBY DISCLAIMED AND EXCLUDED BY THE MANUFACTURER.
GIANT INDUSTRIES, INC. 900 N. Westwood Ave., P.O. Box 3187, Toledo, Ohio 43607
Rev.
1
1/02 GP7132_GP7136.PM6
Ó Copyright 2002 Giant Industries, Inc.
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