Graco Heat Pump 311688L User Manual

Instructions/Parts List

Triton^®3D150

Diaphragm Pump

311688L

Used to pump waterborne and solvent-based paints and catalysts. For professional use

only.

Part No. 253704, Series B

3:1 Ratio Air-operated Double Diaphragm Pump, with BSPP Fittings

Part No. 253705, Series B

3:1 Ratio Air-operated Double Diaphragm Pump, with NPT Fittings

100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure

300 psi (2.1 MPa, 21 bar) Maximum Fluid Working Pressure

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

TI2125A

II 2 G

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Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-

tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When

these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific

hazard symbols and warnings not covered in this section may appear throughout the body of this manual where

applicable.

Warning

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

•

This equipment is for professional use only.

Read all instruction manuals, tags, and labels before operating the equipment.

Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.

Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

Check equipment daily. Repair or replace worn or damaged parts immediately.

Do not exceed the maximum working pressure of the lowest rated system component. Refer to the

Technical Data on page 24 for the maximum working pressure of this equipment.

Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Techni-

cal Data section of all equipment manuals. Read the fluid and solvent manufacturer's warnings.

Do not use hoses to pull equipment.

•

Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose

Graco hoses to temperatures above 82°C (180°F) or below -40°C (-40°F).

Wear hearing protection when operating this equipment.

•

Comply with all applicable local, state, and national fire, electrical, and safety regulations.

PRESSURIZED EQUIPMENT HAZARD

Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin and

cause serious injury.

•

Do not point the gun at anyone or at any parts of the body.

Do not stop or deflect leaks with your hand, body, glove, or rag.

Follow the Pressure Relief Procedure on page 10 whenever you are instructed to relieve pressure;

stop spraying; clean, check, or repair the equipment; and install or clean the spray nozzle.

Tighten all fluid connections before operating the equipment.

•

Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

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Warnings

Warning

FIRE AND EXPLOSION HAZARD

Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result

in a fire or explosion and serious injury.

•

Ground the equipment and the object being sprayed. Refer to Grounding on page 9.

If there is any static sparking or you feel an electric shock while using this equipment, stop the

equipment immediately. Do not use the equipment until you identify and correct the problem.

Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being

sprayed.

•

Keep the work area free of debris, including solvent, rags, and gasoline.

Eliminate all ignition sources such as pilot lights, cigarettes, and static arcs from plastic drop cloths.

Do not plug in or unplug power cords or turn lights on or off in the spray area.

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,

inhaled, or swallowed.

•

Know the specific hazards of the fluid you are using.

Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

•

Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer.

If a diaphragm fails, fluid is exhausted along with the air. When pumping hazardous fluids, place the

pump in an appropriate container to catch the fluid if a diaphragm ruptures.

MOVING PARTS HAZARD

Moving parts, such as the diaphragm shaft, can pinch or amputate your fingers.

•

Before servicing the equipment, follow the Pressure Relief Procedure on page 10 to prevent the

equipment from starting unexpectedly.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating

area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic

fumes, burns, and hearing loss. This equipment includes but is not limited to:

•

Protective eyewear

Clothing and respirator as recommended by the fluid and solvent manufacturer

Gloves

Hearing protection

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Installation

General Information

Tightening Threaded Fasteners

Before First Use

•

FIG. 2 is only a guide for installing system compo-

nents and accessories. It is not an actual system

design. Contact your Graco distributor for assis-

tance in designing a system to suit your particular

needs.

NOTE: Before using pump, loosen fluid cover bolts (38,

39) 1-2 turns and then retorque to 16 N•m (12 ft-lb).

See the Repair section for torque specifications.

•

Always use Genuine Graco Parts and Accessories,

available from your Graco distributor. If you supply

your own accessories, be sure they are adequately

sized and pressure-rated for your system.

•

After unpacking the pump and before using it for the

first time, check and retorque all diaphragm cover

bolts (38, 39).

After the first day of operation, retorque the fasten-

ers again.

•

Reference numbers and letters in parentheses refer

to the reference numbers in the figures and the

parts list on page 22.

As a general guideline, retorque fasteners every two

months.

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Installation

Mounting the Pump

•

For ease of operation and service, mount the pump

so the air inlet, fluid inlet, and fluid outlet ports are

easily accessible.

Hexagonal screw (2 required)

Compressed air

connection

Mount the pump in a well-ventilated area with suffi-

cient clearance on all sides for operator access and

servicing.

Fluid

Inlet

Fluid

The pump must be mounted horizontally as shown

in FIG. 1. Be sure that the pump is level in all direc-

tions and that the cylinder housing (54) is positioned

on the bottom. See FIG. 1.

Cylinder

Housing (54)

Outlet

TI2133A 2

•

The pump can be floor mounted or mounted on a

wall using mounting kit 246495.

Hexagonal

screw

(2 required)

Floor Mount

Be sure the mounting can support the weight of the

pump, hoses, and accessories as well as the stress

caused during operation. The pump has two mount-

ing holes for 0.31 in. (8 mm) screws. See the

Dimension drawing on page 26.

Wall

Mount

Bracket

Wall mount using kit 246495:

1. Use the bracket (15C022) as a template to drill 2

0.38 (9.6 mm) diameter holes in the wall.

2. Loosely attach bracket (15C022) to the wall with

anchors and screws (8 mm) long enough to prevent

the bracket from vibrating during operation.

TI2469A

Wall Mount

3. Remove bracket from the wall and fasten it to the

pump using the 4 screws (116899) and 1 lock

washer (100028) included in the kit.

FIG. 1. Mounting the Pump

4. The lock washer must be used in the unpainted hole

to ensure proper grounding of the bracket.

5. Mount the bracket with the pump attached to the

wall and tighten.

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Installation

•

For maximum suction lift (wet and dry) information,

see Technical Data on page 24.

Air Line

1. Install the air line accessories as shown in FIG. 2.

Be sure the air line supplying the accessories is

grounded.

Use an agitator to prevent fluid from settling out.

Part number 245081 Agitator Kit (accessory) is

available.

a. The fluid pressure can be controlled with either

an air regulator (F) to control the air into the

pump, or with a fluid regulator (H) to control the

fluid out of the pump.

Fluid Outlet Line

1. Use electrically conductive fluid hoses (P). See FIG.

2. Screw the fluid fitting into the pump outlet (N)

snugly while supporting the outlet with a wrench.

See Technical Data on page 24 to determine the

fluid outlet size of your pump.

b. Install a bleed-type master air valve (B) close to

the pump. This valve is required in your system

to relieve air trapped between it and the pump

when the valve is closed. Trapped air can cause

the pump to cycle unexpectedly which could

result in serious injury including splashing in the

eyes or on the skin, or injury from moving parts.

Be sure the bleed valve is easily accessible

from the pump, and is located downstream from

the air regulator.

2. Install a fluid regulator (H) at the pump fluid outlet to

control fluid pressure, if desired. See Air Line step

1a for an alternative method to control pressure.

3. Install a fluid drain valve (J) near the fluid outlet.

c. Install a second air valve (E) upstream from all

air line accessories to isolate them during clean-

ing and repair.

A fluid drain (J) valve is required in your system to

relieve pressure in the hose if it is plugged. The drain

valve reduces the risk of serious injury, including

splashing in the eyes or on the skin, or contamination

from hazardous fluids when relieving pressure. Install

the valve close to the pump fluid outlet. To use the

valve as a circulation valve, connect a tube (K)

between the valve and pail.

d. Install an air line filter (D) to remove contami-

nates such as dirt, moisture, and oil from the

compressed air supply.

2. The air valve does not require lubrication.

3. Install a grounded, flexible air hose between the

accessories and the pump air inlet. See Technical

Data on page 24 to determine the air inlet size of

your pump. Use a minimum 1/2 in.(13 mm) ID air

hose.

NOTICE

Some systems may require installation of a pressure

relief valve at the pump outlet to prevent overpressur-

ization and rupture of the pump or hose.

Thermal expansion of fluid in the outlet line can cause

overpressurization. This can occur when using long

fluid lines exposed to sunlight or ambient heat, or

when pumping from a cool to a warm area (for exam-

ple, from an underground tank).

Fluid Suction Line

•

See Technical Data on page 24 to determine the

fluid inlet size of your pump.

Overpressurization can also occur if the pump is

being used to feed fluid to a piston pump and the

intake valve of the piston pump does not close, caus-

ing fluid to back up in the outlet line.

•

Use conductive hoses (see FIG. 2). Screw the suc-

tion line into the pump inlet snugly while supporting

the inlet with a wrench. Use a compatible liquid

thread sealant on connections to prevent air from

entering the fluid line.

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Installation

Key:

TRITON 3D150 Pump

Bleed-type master air

valve (required for pump)

Air supply line

Air line filter

Air line shutoff valve

Pump air regulator

Gun air regulator (used in

spray system only)

Fluid pressure regulator

(used in spray system

only)

Drain/circulation valve

Drain tube

Suction tube

Pump fluid inlet

Pump fluid outlet

Fluid hose (shown

connected to gun in spray

system)

Gun air hose (used in

spray system only)

Spray gun (used in spray

system only)

Pump air inlet

Agitator (used in spray

system only)

Ground wire

TI2373A

TI2127A

FIG. 2. Typical Installation

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Installation

•

All fluid pails used when flushing: Follow your local

code. Use only conductive metal pails placed on a

grounded surface. Do not place the pail on a non-

conductive surface, such as paper or cardboard,

which interrupts the grounding continuity.

Grounding

Before operating the pump, ground the system as

explained below. Read the warnings on page 4.

Ground all of this equipment:

•

Pump: use a ground wire and clamp. See FIG. 3.

Loosen the grounding screw (X). Insert one end of a

12 ga (1.5 mm²) minimum ground wire (Y) under the

clamp and tighten the screw securely. Connect the

other end of the wire to a true earth ground. For a

ground wire and clamp, order Part No. 222011.

•

Air and fluid hoses: Use only electrically conductive

hoses.

Air compressor: Follow manufacturer’s recommen-

dations.

TI2126A

Fluid supply drum: Follow your local code.

FIG. 3. Grounding the Pump

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Operation

7. If the fluid hose has a dispensing device, hold it

open while continuing with the following step.

Pressure Relief Procedure

8. Slowly open the air regulator (F) until the pump

starts to cycle. Allow the pump to cycle slowly until

all air is pushed out of the lines and the pump is

primed.

Read the warnings on page 3, and follow the Pres-

sure Relief procedure below whenever you:

If you are flushing, run the pump long enough to thor-

oughly clean the pump and hoses. Close the air regula-

tor. Remove the suction tube (L) from compatible

flushing fluid and place it in the fluid to be pumped.

•

are instructed to relieve pressure

stop spraying

check or service any of the equipment

install or clean the fluid nozzle.

NOTE: Operating the pump dry for extended periods or

operating at pressures higher than the recommended

maximum input air pressure will reduce diaphragm life.

1. Shut off the air to the pump.

2. Open the dispensing valve, if used.

3. Open the fluid drain valve to relieve all fluid pres-

sure, having a container ready to catch the

drainage.

Pump Shutdown

Short Term Shutdown

For a short term shutdown, relieve the pressure (see

procedure on this page).

Flushing the Pump Before First

Use

Long Term Shutdown

The pump was tested in oil. If oil could contaminate the

fluid you are pumping, flush the pump thoroughly with a

compatible flushing fluid. Follow the steps under Start-

ing and Adjusting the Pump.

For a long term shutdown, such as several hours or

overnight:

1. Flush the pump thoroughly.

2. Leave compatible flushing fluid in the pump.

3. Relieve the pressure (see procedure on this page).

Starting and Adjusting the Pump

1. Be sure the pump is properly grounded. Refer to

Grounding on page 9.

2. Check all fittings to be sure they are tight. Be sure to

use a compatible liquid thread sealant on all male

threads. Re-torque diaphragm cover bolts (38, 39)

before start-up.

3. Place the suction tube (L) in the fluid to be pumped.

4. Place the end of the fluid hose (P), see FIG. 2, into

an appropriate container.

5. Close the fluid drain valve (J).

6. With the pump air regulator (F) closed, open the

bleed-type master air valve (B).

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Maintenance

Lubrication

Tightening Threaded

Connections

NOTICE

1. Before each use, check all hoses for wear or dam-

age, and replace as necessary.

Lubrication of the pump is not required. Oil is

exhausted through the muffler, which could contami-

nate the fluid supply or other equipment. Excessive

lubrication can also cause the pump to malfunction.

2. Check to be sure all threaded connections are tight

and leak-free.

3. Check and re-torque all screws and fasteners at

least every two months.

Flushing and Storage

Flush the pump often enough to prevent the fluid you

are pumping from curing, drying, or freezing in the pump

and damaging it. Follow the Pressure Relief Proce-

dure on page 10 before storing it for any length of time.

Use a compatible flushing fluid.

Preventive Maintenance

Schedule

•

Establish a preventive maintenance schedule,

based on the service history of the pump. This is

especially important for prevention of spills or leak-

age due to diaphragm failure.

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Troubleshooting

NOTE: Relieve the pressure (page 10) before checking

or servicing the equipment.

NOTE: Relieve the pressure (page 10) before checking

or servicing the equipment.

Problem

Cause

Worn check valve balls (26), seats

(31), or ball guides (32).

Solution

Pump cycles at stall or fails to hold

pressure at stall.

Replace. See page 20.

Pump will not cycle, or cycles once

and stops.

Stuck or dirty air valve.

Disassemble and clean air valve.

See page 16. Use filtered air.

Check valve ball (26) severely worn Replace ball and seat. See page 20.

and wedged in seat (31).

Check valve ball (26) wedged in seat Replace. See page 20. Do not

(31) due to overpressurization.

exceed the maximum fluid working

pressure, see page 24.

Clogged fluid dispensing valve.

Pinched hose line.

Relieve pressure and clear valve.

Check lines.

Pump operates erratically.

Clogged suction line.

Inspect; clear.

Sticky or leaking check valves.

Clean or replace balls (26) and seats

(31). See page 20.

Ruptured diaphragm (9).

Restricted exhaust.

Replace. See page 13.

Remove restriction.

Tighten.

Air bubbles in fluid.

Loose suction line.

Ruptured diaphragm (9).

Replace. See page 13.

Pump running irregularly. Stroke fre- Worn parts.

quency dropping, coming to stand-

still.

Replace worn parts. Check com-

pressed air supply.

Icing caused by: compressed air too Remove ice by changing operating

moist, stroke frequency too high,

local temperature too low.

conditions.

Air escapes continually.

Damaged air valve cup (15) or seat. Replace damaged parts. See page

16.

Foreign matter inside pump.

Worn check valve seats.

Check air filter.

Pump does not start, or pressure

fluctuates.

Replace. See page 20.

Inlet strainer blocked, maximum suc- Clean strainer. Replace defective

tion exceeded, hose or seal defec-

tive.

parts.

Contaminated fluid. Pump installed or Check fluid supply. Follow installation

operated incorrectly.

and operation instructions in this

manual.

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Repair

Prepare the Pump for Repair

1. Flush the pump if possible, page 11.

2. Relieve the pressure, page 10.

Fault Indications

During operation, check for indications of worn or dam-

aged parts, such as:

•

major pressure fluctuations

change in the pump’s operating sound

irregular operation.

3. Disconnect the air and fluid hoses.

4. Remove the pump from its mounting and take it to

the work bench.

Always replace worn or damaged parts immediately to

prevent additional damage.

General Repair Notes

•

A qualified technician should make all repairs.

Tools Required

•

Inspect and clean all parts thoroughly before reas-

sembly.

•

3, 4, and 6 mm allen wrenches

12, 19, and 22 mm open end wrenches

internal snap ring pliers

helicoil thread insert installation tool

o-ring pick

•

Use only genuine Graco replacement parts, avail-

able from your Graco distributor.

•

Be careful not to damage sealing surfaces.

Replace all o-rings removed from the pump.

Follow all lubrication, torque, and repair notes in the

repair procedures.

needlenose pliers

•

Do not use silicone or silicone-based grease.

vise with soft jaws

Fluid cover fasteners have a thread-locking adhe-

sive patch applied to the threads. If this patch is

excessively worn, the screws may loosen during

operation. Replace screws with new ones, or apply

medium-strength (blue) thread locker to the threads.

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Repair

3. Prepare the pump for repair of the housing-side dia-

phragm.

Replace the Diaphragms

a. Press on the cylinder-side diaphragm so that it

protrudes into the cylinder. This will fully extend

the diaphragm on the housing side.

Wear gloves when removing or assembling the dia-

phragms to reduce the risk of cuts.

b. Install new ball check seals (29*).

Diaphragm Repair Kit 246011 is available. Parts

included in the kit are marked, for example (9*). For the

best results, replace both diaphragms.

c. Make sure the helicoil (56) is in place in each

bolt hole. See Helicoil Installation, page 15.

d. Replace the fluid cover and install the 6 bolts.

Torque the bolts to 16 N•m (12 ft-lb). Use blue

Loctite or equivalent as needed. See General

Repair Notes, page 13.

Always replace the ball check seals (29) whenever the

fluid covers are removed. These seals are included in

each of the repair kits.

1. Prepare the pump for repair of the cylinder-side dia-

phragm.

4. Repair the housing-side diaphragm.

a. Remove the 6 bolts (39) and fluid cover (37)

from the housing side of the pump.

a. Remove the 6 bolts and the fluid cover from the

housing side.

b. Press on the exposed diaphragm (9) to fully

extend the cylinder-side diaphragm.

b. Remove the ball check seals.

c. The exposed diaphragm should be in the fully

extended position (protruding out from the cylin-

der). If it is not, reassemble the cylinder-side

seals and cover and repeat step 3.

c. Replace the housing-side cover and tighten the

6 bolts.

NOTE: The housing-side cover must be reassembled

tightly enough to prevent the shaft from turning when

the cylinder-side diaphragm is loosened.

d. Grip the housing-side diaphragm firmly and

unscrew it from the rod by hand.

2. Repair the cylinder-side diaphragm.

e. Install a new diaphragm (9*) firmly, by hand.

f. Install new ball check seals (29*).

a. Remove the 6 bolts (38) and fluid cover (37)

from the cylinder side.

g. Make sure the helicoil (56) is in place in each

b. Remove the ball check seals (29).

bolt hole. See Helicoil Installation, page 15.

c. The exposed diaphragm should be in the fully

extended position (protruding out from the cylin-

der). If it is not, reassemble the cylinder-side

seals and cover and repeat step 1.

h. Replace the fluid cover and install the 6 bolts

(39*). Torque the bolts to 16 N•m (12 ft-lb). Use

blue thread locker as needed. See General

Repair Notes, page 13.

d. Grip the cylinder-side diaphragm firmly and

unscrew it from the rod by hand.

Spare diaphragms should be stored in a cool, dry place

and be used within 8 months to prevent diaphragm fail-

ure due to material aging.

e. Install a new diaphragm (9*) firmly, by hand.

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Repair

2. Position the insert and tool squarely over the tapped

hole.

Helicoil Installation

To replace broken or removed helicoils (56), order Heli-

coil Repair Kit 24U929. Also order Helicoil Installation

Tool, Graco PN 24U930.

3. Use slight pressure to rotate the tool until the insert

is engaged in the tapped hole. Continue to rotate

the tool until the top of the insert is 1/2 turn past the

first fully formed thread.

1. Screw the helicoil insert onto the tool. Engage the

tang of the insert in the driving contour of the tool.

4. Break the tang off cleanly at the notch in the bottom

coil. Place a rod or screw driver against the tang

and strike it sharply with a hammer.

Torque to 16 N•m (12 ft-lb). Use blue

Loctite or equivalent as needed. See

General Repair Notes, page 13.

Housing Side 9*

29*^†‡N

Cylinder Side 9*

29*^†‡N

29*†‡N

ti2129c

FIG. 4 Replace the Diaphragms

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Repair

Reassembly

Repair the Air Valve

NOTE: Lubricate all o-rings when reassembling the

pump.

Air Valve Repair Kit 245066 is available. Parts included

in the kit are marked, for example (33†). For the best

results, use all parts in the kit.

1. Assemble in reverse order.

Disassembly

NOTE: Orient the new flat gasket (19) on the air valve

plate (16) so that the channels in the plate are com-

pletely covered.

1. Prepare the pump for repair, page 13.

2. Remove the air valve sheet metal cover (36) and felt

dampener (34).

Note the orientation of the air valve plate (16) relative

to the fluid outlet arrow, with “POM” marking up

3. Unscrew the cylinder screws (21).

“POM”

marking

4. Remove the valve cover (20) with the flat gasket

(19†).

5. Use two screwdrivers to lift out the air valve plate

(16†) and replace o-rings (17†N) and (18†N).

Remove two o-rings (55).

fluid outlet arrow

6. Remove the air valve cup (15†).

ti15227a

7. Remove one retaining clip (14) with pliers DIN

5256C nominal size 12-25 diameter.

2. Replace all parts with the new ones supplied in kit

245066.

8. Screw cylinder screw (21) into the plug (12) and pull

it out. Replace o-ring (13†N).

NOTE: Four profile seals (29) are provided in kit

245066 as in all 308HP kits. These seals need to be

replaced only if the fluid covers are removed.

9. Repeat steps 8 and 9 for clip and plug on opposite

side.

10. Reach into the housing and press out the carriage

(10).

11. Replace o-rings (11†N).

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Repair

Lubricate.

Torque to 3.1 N•m (28 in-lb)

13†N

15†

17†N

18†N

11†^N

11†N

16†

19†^N

13†^N

ti2130B

FIG. 5. Repair the Air Valve

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Repair

Repair the Shaft and Bearings

Fluid Inlet and Outlet Adapters

NOTE: Parts marked with a (o) are included in Shaft

repair kit 233841. For the best results, use all parts in

the repair kit.

If the fluid inlet adapter (1a) or outlet adapter (1c) have

been removed, apply sealant primer and high strength

anaerobic sealant to the adapter threads before install-

ing. Be sure to install new o-rings (1b, 1d). Torque the

adapters to 12.5-14.7 ft-lb (17-20 N•m).

Parts marked with a (O) are included in Bearing repair kit

15J647.

Disassembly

1. Remove the diaphragms. See page 13.

2. Disassemble the air valve. See page 16.

3. Remove the housing (54).

•

Sleeve clamp (6) is visible inside the air valve

cavity. Spread the sleeve clamp (6) with pliers

DIN 5254A, nominal size 19, and at the same

time, slide the shaft assembly (7) out from the

end where housing (54) was removed.

NOTE: The valve carriage (5) will remain free inside the

diaphragm housing.

4. Remove clip (42) and bearing (3).

Reassembly

1. Replace o-ring (2) in bearing, lubricate internal

o-rings.

2. Install new bearing (3) and clip (42) inside housing

(54).

3. Insert shaft assembly (7) into diaphragm housing (1)

through the valve carriage, spreading the sleeve

clamp to allow full insertion. Be careful to release

sleeve clamp (6) in the correct location along the

shaft to engage it in all three grooves.

4. Reinstall the housing (54).

5. Replace o-rings on the carriage, air valve plate, and

plugs and reinstall the air valve section. (See page

16.)

6. Replace the diaphragms (page 13).

7. Replace the ball check seals (29) (page 20) and

reinstall the fluid covers.

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Repair

Lubricate.

Torque to 12 ft-lb (16 N•m). Use medium-strength (blue)

thread locker or equivlaent as needed. See General

Repair Notes, page 13.

Torque to 28 in-lb (3.1 N•m).

Apply sealant primer and high-strength anaerobic

sealant. Torque to 12.5-14.7 ft-lb (17-20 N•m).

NO2

O43

56^I

O43

29*†‡N

†‡N29

†N11

†

17†N

†N11

18†N

29*†‡N

†‡N29

O42

13†N

†16

†N19

ti2131f

FIG. 6. Repair the Shaft

311688L

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Repair

Replace the Ball Check Valves

Ball Check Valve Repair Kit 245067 is available. Parts

included in the kit are marked with a (‡). For the best

results, use all parts in the kit.

Reassembly

1. Reinstall the inlet and outlet ball checks on one side

of the pump. The inlet and outlet checks are assem-

bled differently, install them exactly as shown in FIG.

Disassembly

1. Remove fluid covers (see page 13). Do not remove

housing (54).

2. Install one fluid cover loosely to prevent the ball

checks from falling out.

2. Remove the inlet and outlet ball checks (26-32).

Note that the orientation of the inlet check parts is

different than the outlet check parts. (See FIG. 7.)

NOTE: Align the through holes in the housing with each

other and with the covers.

NOTE: If the inlet seats (31) are difficult to remove, drive

them out from the opposite side using a brass rod and

hammer.

3. Turn the pump over and install the ball checks on

the opposite side, exactly as shown.

4. Reinstall the fluid covers. (See page 13.)

3. Replace all parts provided in Kit 245067.

311688L

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Repair

Torque to 12 ft-lb (16 N•m). Use

medium-strength (blue) thread

locker or equivlaent as needed.

See General Repair Notes, page

13.

‡

Align.

32‡

‡

30‡ꢀ

56^I

‡29

‡28

‡26

‡32

Inlet Ball

Checks

Outlet Ball

Checks

30‡ꢀ

‡

‡32

‡

‡26

‡28

‡

‡29

ti2128c

FIG. 7. Replace the Ball Check Valves

311688L

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Parts

Part No. 253704, Series B

Part No. 253705, Series B

29*†‡N

30‡ꢀ

‡

56^I

‡

42O

2NO

43O

O42

†

†N11

†N13

43O

†N17

‡27

†N18

†

‡32

O42

‡

†N19

‡28

*†‡N29

ti2132j

311688L

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Parts

Part No. 253704 BSPP, Series B

Part No. 253705 NPT, Series B

Ref.

No.

Ref.

No.

Part No.

Description

Qty

Part No.

Description

Qty

35 15J372

36 15J374

37 15A282

38 117240

COVER, exhaust

HOUSING, diaphragm; includes

items 1a-1d

COVER, sheet metal, air valve

COVER, fluid

1a 15A306

198852

ADAPTER, fluid inlet, for 253704

ADAPTER, fluid inlet, for 253705

O-RING

BOLT, cap, socket head; M8x70

Torque to 16 N•m (12 ft-lb)

1b 198857

1c 15A290

198855

39 115264

40 15A286

198832

BOLT, cap, socket head; M8x18

Torque to 16 N•m (12 ft-lb)

ADAPTER, fluid outlet, for 253704

ADAPTER, fluid outlet, for 253705

O-RING

ADAPTER, pump diaphragm, for

253704

1d 117036

O-RING

ADAPTER, pump diaphragm, for

253705

BEARING

117158

O-RING

41 116343

CLAMP, grounding

CLIP, ID, C-spring

O-RING

197645

CARRIAGE, valve

CLAMP, sleeve

SHAFT, pump, diaphragm

O-RING

15A289

44 116595

45 111307

46L 188621

54 258001

SCREW, M4 button head

WASHER (used with #41, 116343)

LABEL, warning (not shown)

HOUSING, cylinder

O-RING

DIAPHRAGM

10 197649

11 †N

CARRIAGE

O-RING

†

12 197651

13 †N

PLUG

Helicoil

O-RING

14 197653

CLIP, id

Included in Diaphragm Housing Repair Kit.

Order Kit 261665 for 253704 pumps and 261666

for 253705 pumps.

†

CUP, air valve

PLATE, air valve

O-RING

17 †N

Included in Shaft Repair Kit 233841.

18 †N

O-RING

Included in Bearing Repair Kit. Order Kit 15J647.

Included in Diaphragm Repair Kit 246011.

Included in Air Valve Repair Kit 245066.

Included in Ball Check Valve Repair Kit 245067.

Available in 10-pack kit 15D564.

19 †N

GASKET, flat

20 197659

21 116474

COVER, valve

†

SCREW, cap, socket head; M4x20

Torque to 3.1 N•m (2.3 ft-lb)

‡

ꢀ

22 117160

23 197661

24 197662

25 116475

VALVE, safety

Available in Helicoil Repair Kit 24U929 (quantity

16). Also order Helicoil Insert Tool 24U930.

DAMPENER, noise

PLATE, screw

Replacement Warning labels, signs, tags, and

cards are available at no cost.

SCREW, cap, socket head; M4x12

BALL, matrix

‡

SEAL, profile

SEAT, valve, outlet

SEAL, profile

29 *†‡N

30 ‡ꢀ

O-RING

‡

SEAT, valve, inlet

GUIDE, ball

33 197670

34 197671

DAMPENER, felt, side

DAMPENER, felt, air inlet side

311688L

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Technical Data