Graco Series A Datasheet

Instructions - Parts List
High-Flo®Lowers
Designed for low pressure, medium volume circulation of finishing materials.
For professional use only.
Patent Pending
Important Safety Instructions
Read all warnings and instructions in your High-Flo
Pump manual 311211. Save these instructions.
See page 2 for Table of Contents and page 2 for
List of Models and Maximum Working Pressures.
TI8732a
TI8733a
311690M
ENG

Models
2311690M
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
750cc Lowers . . . . . . . . . . . . . . . . . . . . . . . . 2
1000cc Lowers . . . . . . . . . . . . . . . . . . . . . . . 2
1500cc Lowers . . . . . . . . . . . . . . . . . . . . . . . 3
2000cc Lowers . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 6
Disconnect the Lower . . . . . . . . . . . . . . . . . . . . . 7
Reconnect the Lower . . . . . . . . . . . . . . . . . . . . . 7
Reassemble the Coupling Rod and Tie Rods
to the Motor . . . . . . . . . . . . . . . . . . . . . . . . . 8
Replace the Throat Packings Without
Disconnecting the Lower . . . . . . . . . . . . . . . 8
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Lower Disassembly . . . . . . . . . . . . . . . . . . . . . . . 9
Clean and Inspect Parts . . . . . . . . . . . . . . . . . . 10
Lower Reassembly . . . . . . . . . . . . . . . . . . . . . . 10
Lower Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pump Seal Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Pump Seal Repair Kit 289548 . . . . . . . . . . . 20
Pump PTFE Seal Conversion Kit 289549 . . 20
Pump Seal Repair Kit 277360 . . . . . . . . . . . 20
Pump PTFE Seal Conversion Kit 277361 . . 20
Pump Seal Repair Kit 277362 . . . . . . . . . . . 20
Pump PTFE Seal Conversion Kit 277363 . . 20
Pump Seal Repair Kit 277358 . . . . . . . . . . . 20
Pump PTFE Seal Conversion Kit 277359 . . 20
Throat Packing Kits . . . . . . . . . . . . . . . . . . . . . . . . 21
Throat Packing Kit 239868 . . . . . . . . . . . . . 21
Throat Packing Kit 239872 . . . . . . . . . . . . . 21
Throat Packing Kit 239866 . . . . . . . . . . . . . 21
Throat Packing Kit 277356 . . . . . . . . . . . . . 21
Throat Packing Kit 277357 . . . . . . . . . . . . . 21
Throat Packing Kit 24C405 . . . . . . . . . . . . . 21
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 22
Models
750cc Lowers
1000cc Lowers
Model
No. Series Material Seat
Size
(cc)
Maximum Pump
Working Pressure
psi (MPa, bar)
Rod/Cylinder
Material Connection Style
Parts
Page
289366 A SST Tungsten
Carbide
750 500 (3.4, 34) Chromex/Chrome Inlet/Outlet 1-1/2 in. tri-clamp 15
Model
No. Series Material Seat
Size
(cc)
Maximum Pump
Working Pressure
psi (MPa, bar)
Rod/Cylinder
Material Connection Style
Parts
Page
253033 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
16
24E783 A SST SST 1000 400 (2.8, 28) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
16
253061 A CST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/Nitride Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
16
253398 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/MaxLife Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
16
253423 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/Chrome Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
16
253520 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/Chrome Inlet/Outlet 1-1/2 in. tri-clamp 16
253523 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/MaxLife Inlet/Outlet 1-1/2 in. tri-clamp 16
253568 A SST Tungsten
Carbide
1000 400 (2.8, 28) Chromex/MaxLife Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
16

Models
311690M 3
1500cc Lowers
2000cc Lowers
Wetted Parts: Carbon Steel, Stainless Steel, Leather, PTFE,
Ultra High Molecular Weight Polyethylene (UHMWPE),
Tungsten Carbide
Model
No. Series Material Seat
Size
(cc)
Maximum Pump
Working Pressure
psi (MPa, bar)
Rod/Cylinder
Material Connection Style
Parts
Page
253034 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
17
24E784 A SST SST 1500 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
17
253062 A CST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/Nitride Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
17
253085 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
17
253397 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/MaxLife Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
17
253521 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/Chrome Inlet/Outlet 1-1/2 in. tri-clamp 17
253524 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/MaxLife Inlet/Outlet 1-1/2 in. tri-clamp 17
253569 A SST Tungsten
Carbide
1500 460 (3.2, 32) Chromex/MaxLife Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
17
Model
No. Series Material Seat
Size
(cc)
Maximum Pump
Working Pressure
psi (MPa, bar)
Rod/Cylinder
Material Connection Style
Parts
Page
253035 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
18
24E785 A SST SST 2000 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
18
253063 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
18
253086 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/Chrome Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
18
253396 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/MaxLife Inlet: 1-1/2 in. bspp
Outlet: 1-1/4 in. bspp
18
253522 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/Chrome Inlet/Outlet 1-1/2 in. tri-clamp 18
253525 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/MaxLife Inlet/Outlet 1-1/2 in. tri-clamp 18
253570 A SST Tungsten
Carbide
2000 460 (3.2, 32) Chromex/MaxLife Inlet: 1-1/2 in. npt
Outlet: 1 in. npt
18

Warnings
4311690M
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 symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.

Warnings
311690M 5
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
• Always wear impervious gloves when spraying or cleaning equipment.
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
WARNING

Repair
6311690M
Repair
Grounding
The equipment must be grounded. Grounding reduces
the risk of static and electric shock by providing an
escape wire for the electrical current due to static build
up or in the event of a short circuit.
Pump: Use the ground screw (Z) and lockwasher on the
motor to attach ground wire 244524 (Y). Tighten the
screw securely. Connect the other end of the ground
wire to a true earth ground. See FIG. 1.
Air and fluid hoses: use only electrically conductive
hoses with a maximum of 500 ft. (150 m) combined
hose length to ensure grounding continuity. Check the
electrical resistance of hoses. If total resistance to
ground exceeds 29 megohms, replace hose immedi-
ately.
Air compressor: follow manufacturer’s recommenda-
tions.
Hydraulic power supply: follow manufacturer’s recom-
mendations.
Surge tank: use a ground wire and clamp.
Spray gun: ground through a connection to a properly
grounded fluid hose and pump.
Fluid supply container: follow local code.
Object being sprayed: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive sur-
face, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray gun
firmly to the side of a grounded metal pail, then trigger
the gun.
Pressure Relief Procedure
1. Engage trigger lock.
2. Air-Powered Pumps only: Close the bleed-type
master air valve.
Hydraulic-Powered Pumps only: Close the hydraulic
supply line valve first, then the return line valve.
3. Disengage the trigger lock.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Engage the trigger lock.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip
• To service the pump assembly, see manual
311211.
• To service the air motor, see manual 311238.
• To service the hydraulic motor, see manual
308330.
FIG. 1
TI8250a
Z Y

Repair
311690M 7
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
Disconnect the Lower
To disconnect the lower, follow the procedure on this
page. See pages 8-11 for procedures to repair lower. To
disconnect pump from an electric circulation assembly,
EPXXXX, see manual 311594.
1. Relieve the pressure, see Pressure Relief Proce-
dure page 6.
2. Disconnect the hoses from the lower and plug the
ends to prevent fluid contamination.
3. Loosen the coupling nut (K) and remove the collars
(G). Remove the coupling nut from the piston rod
(H). Unscrew the locknuts (B) from the tie rods (C).
Pull the lower (D) off the motor (E). See FIG. 2 and
FIG. 3.
Reconnect the Lower
1. Assemble the coupling nut (K) to the piston rod (H).
2. Orient the lower (D) to the motor (E). Position the
lower on the tie rods (C). Lubricate the threads of
the tie rods. Screw the tie rod locknuts (B) onto the
tie rods. Tighten the locknuts and torque to 50-55
ft-lb (68-75 N•m).
3. Insert the collars (G) into the coupling nut (K).
Tighten the coupling nut onto the piston rod (H) and
torque to 90-100 ft-lb (122-135 N•m).
4. Flush and test the pump before reinstalling it in the
system. Connect hoses and flush the pump. While it
is pressurized, check for smooth operation and
leaks. Adjust or repair as necessary before reinstall-
ing in the system. Reconnect the pump ground wire
before operating.
CAUTION
Hydraulic-Powered Pumps only: When shutting down
the hydraulic system, always shut off the hydraulic
supply line shutoff valve first, and then the return line
shutoff valve to prevent overpressurizing the motor or
its seals. When starting the hydraulic system, open
the return line shutoff valve first.
In stand or wall-mounted installations, you do not
have to remove the entire pump from its mounting.
If the coupling rod (F) and tie rods (C) have been
disassembled from the motor, see Reassemble the
Coupling Rod and Tie Rods to the Motor on page 8.
FIG. 2
NXT Pump
Shown
TI8394a
1
Torque to 90-100 ft-lb
(122-135 N•m).
Torque to 50-60 ft-lb
(68-81 N•m).
Apply anti-seize
lubricant.
1
2
3
C
K
H
2
E
B
3
2
G
F
D
3

Repair
8311690M
Reassemble the Coupling Rod
and Tie Rods to the Motor
1. Loosen, but do not remove, the screws holding the
adapter plate (J) to the motor (E) on Viscount I+
pumps. See FIG. 3.
2. Screw the tie rods (C) into the adapter plate (J) and
torque to 50-55 ft-lb (68-75 N•m). On Viscount I+
pumps, the tie rods will engage threaded holes in
the base of the motor.
3. Fill the cavity in the bottom of the motor shaft with
grease. Screw the coupling rod (F) into the motor
shaft until the pin holes align. On Viscount I+
pumps, install the pin (A) in the first hole from the
end of the coupling.
4. Align the lower (D) with the tie rods (C) and loosely
install the tie rod locknuts (B).
5. Insert the collars (G) and screw the coupling nut (K)
onto the coupling rod (F) and torque to 90-100 ft-lb
(122-135 N•m).
6. Torque the screws holding the adapter plate (J) to
the motor (E) to 15-17 ft-lb (20-23 N•m). Torque the
tie rod locknuts (B) to 50-55 ft-lb (68-75 N•m).
Replace the Throat Packings
Without Disconnecting the
Lower
1. Flush the pump, if possible.
2. Stop the pump at the middle of its stroke.
3. Shut off the air or hydraulic supply.
4. Unscrew the coupling nut (K) from the piston rod
(H). Allow the nut and collars (G) to rest on the pis-
ton rod. See FIG. 2.
5. Cycle the pump slowly to the bottom of its stroke.
6. Relieve the pressure, see Pressure Relief Proce-
dure, page 6.
7. Lift the motor shaft and remove the coupling nut (K)
and collars (G). See FIG. 2 and FIG. 3.
8. Loosen the packing nut (21). See FIG. 8.
9. Loosen and remove the throat cartridge (35).
Remove the PTFE o-ring (36). See FIG. 8.
10. Remove the glands (19, 26) and packings (20, 25).
FIG. 3
Use this procedure only if the coupling rod (F) and
tie rods (C) have been disassembled from the
motor, to ensure proper alignment of the motor
shaft to the piston rod.
Viscount I+
Pump Shown
TI7674b
Torque to 90-100 ft-lb
(122-135 N•m).
Torque to 50-55 ft-lb
(68-75 N•m).
Apply anti-seize
lubricant.
1
2
3
1
J
C
G
K
3
2
E
B
A
H
F
D
2
3To replace the throat packings as part of a com-
plete service of the lower, see page 9.
Throat packing kits are available. See page 21 to
order. Parts supplied in the throat packing kit are
marked with a symbol, for example (19†). For the
best results, use all the parts in the kit.
Keep packing nut installed, but loose.

Repair
311690M 9
11. Lubricate the throat packings and glands. Install one
male gland (19†), then five v-packings with the lips
facing down: one UHMWPE (20†), one leather
(25†), UHMWPE, leather, UHMWPE. Install the
female gland (26†). Install three v-packings with the
lips facing up: UHMWPE, leather, UHMWPE. Install
the other male gland (19†). Install the packing nut
(21) finger-tight. See FIG. 8.
12. Install the o-ring (36†) on the throat cartridge (35).
Apply lubricant to the throat cartridge threads then
screw the cartridge into the upper pump housing
(1). Torque the throat cartridge to 100 ft-lb (135
N•m).
13. Tighten the packing nut (21) firmly and then turn the
nut another 1/4 turn. If you have a torque wrench,
tighten the packing nut to 30 ft-lb (40 N•m), then
re-tighten to 15-20 ft-lb (20-27 N•m).
14. Screw the coupling nut (K) and collars (G) onto the
piston rod (H). Torque to 145-150 ft-lb (197-203
N•m). See FIG. 2.
15. On Viscount I+ pumps, reinstall the pin (A). If neces-
sary, reconnect the hydraulic supply and move the
pump to the middle of its stroke. Install the pin in the
first hole from the end of the coupling.
Repair Kits
Pump seal kits are available for each pump size. Throat
packing kits are also available. See page 19 to order.
Parts supplied in the pump seal kit are marked with one
asterisk in the text and drawings, for example (2*). Parts
supplied in the throat packing kit are marked with a sym-
bol, for example (19†). For the best results, use all the
parts in the kit.
Lower Disassembly
1. Remove the pump from the motor as described on
page 6. See also FIG. 7.
2. Secure the inlet manifold (18) in a vise.
3. Loosen, but do not remove, the packing nut (21) and
cartridge (35). See FIG. 7.
4. Remove the four capscrews (9) and washers (8)
from around the outlet manifold (22).
5. Remove the outlet manifold (22), balls (23), seats
(24), and gaskets (7).
6. Remove the three cylinder bolts (13) and lockwash-
ers (14). Lift off the outlet housing (16), along with
the fluid tubes (3), cylinder (1), and piston assembly
(17, 10, 11, 12, 39).
7. Remove the throat cartridge (35) and o-ring (36).
8. Remove the glands (19, 26) and packings (20, 25).
9. Remove the tubes (3) and cylinder (1) from the inlet
housing (15). Pull the piston assembly out of the cyl-
inder.
10. Remove the inlet manifold (18) from the vise.
11. Remove the four capscrews (9) and washers (8)
from the inlet manifold (18). Use a flatblade screw-
driver inserted between the inlet housing (15) and
the inlet manifold (18) to separate them.
12. Remove the balls (5), intake seats (6 and 34), and
gaskets (7).
13. Inspect the pressure relief valve in the seat (6) to
make sure it is not clogged. Press down on the
valve's ball to see if the ball and the spring are free
to move. See FIG. 4.
Inspect the surface of the piston rod (17). If it is
scratched, replace the piston rod.
One intake seat (6) includes a pressure relief valve
(V). This seat must be located exactly where shown
(the left side as viewed in FIG. 7). Use the text cast
into the inlet housing as a guide.
FIG. 4
TI8407a
7
6
ball
spring
pressure
relief
valve
pin

Repair
10 311690M
14. Place the flats of the piston nut (12) in a vise.
Unscrew the rod (17) from the nut and spacer. Dis-
assemble the piston (10) and remove the seal (11).
Clean and Inspect Parts
Clean all parts in a compatible solvent. Inspect all parts
for wear or damage. If you are using a repair kit, use all
the new parts in the kit, discarding the old ones they
replace. Replace any other parts as needed. Worn or
damaged parts may cause the pump to perform poorly
or cause premature wear of the new seals and packings.
Lower Reassembly
1. Place the halves of the piston (10) around the pack-
ing (11) and snap them together. See FIG. 8.
2. Apply thread sealant (Loctite®263 or 2760) to the
piston rod (17) threads. Screw the rod through the
piston, packing, and spacer and into the piston nut
(12). Torque the nut to 95-100 ft-lb (129-135 N•m).
Allow to cure for at least 12 hours before use.
3. With the lower pump housing (11) turned upside
down, install the balls (5) and the gaskets (7*).
4. Install the relief valve intake seat (6) in the left side
of the lower housing (11), as viewed in FIG. 8. (Text
cast into the lower housing identifies the correct
location for the relief valve seat.) The pin (P) on the
seat must point up into the housing. The pin limits
the positioning of the seat, ensuring that the vent
hole (V) is not blocked by part of the housing. See
FIG. 5.
5. Install the inlet seat without a relief valve (34) in the
right side of the inlet housing (15).
6. Place the inlet manifold (18) on the inlet housing
(15). Install the lockwashers (8) and capscrews (9).
Torque to 25-30 ft-lb (34-40 N•m). See FIG. 8.
7. Place the intake manifold (18) in a vise. Place one
o-ring (2*) in each side of the inlet housing (15),
where the tubes (3) sit. Place o-rings (2*) in the
grooves at each end of the tubes. Place a gasket (4)
in both the inlet and outlet housing (15 and 16).
Position the tubes and cylinder (1) in the lower
housing.
CAUTION
If the pressure relief valve in the seat (6) is clogged or
filled with material, soak the seat in a compatible sol-
vent. Make sure all material residue is cleaned from
the ball and seat area.
If the relief valve cannot be thoroughly cleaned so that
the ball and spring are free to move, replace the seat
(6).
COMPONENT RUPTURE HAZARD
The relief valve seat (6) must be installed at the fluid
intake, as shown in FIG. 8. The relief valve reduces the
risk of pump overpressurization. The seat cannot
relieve pressure if installed on the other side of the inlet
housing.
FIG. 5
The seats (6 and 34) are not reversible; the cham-
fered side must face the ball.
It may be necessary to use a rubber mallet to set
the fluid tubes (3) and cylinder (4) in place.
TI8407a
7
6
ball
spring
pressure
relief
valve
P