This symbol alerts you to the possibility of damage to
equipment if you do not follow the instructions.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
D Do not alter or modify this equipment. Use only genuine Graco parts.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
D Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 27 for the maximum working pressure of this equipment.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
D Do not use hoses to pull equipment.
D 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).
D Do not lift pressurized equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
D Wear hearing protection when operating this equipment.
D Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in pressurized aluminum equipment. Such use could result in a
chemical reaction, with the possibility of explosion.
3089722
WARNING
INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also
cause serious injury.
Fluid injected into the skin may look like just a cut, but it is a serious injury. Get immediate medi-
cal attention.
Do not point the gun at anyone or at any part of the body.
Do not put your hand or fingers over the spray tip.
Do not stop or deflect leaks with your hand, body, glove or rag.
Do not “blow back” fluid; this is not an air spray system.
Always have the tip guard and the trigger guard on the gun when spraying.
Check the gun diffuser operation weekly. Refer to the gun manual.
Be sure the gun trigger safety operates before spraying.
Lock the gun trigger safety when you stop spraying.
Follow the Pressure Relief Procedure on page 10 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
Tighten all fluid connections before operating the equipment.
Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do not
repair high pressure couplings; you must replace the entire hose.
Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
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.
FUEL HAZARD
The fuel used in this unit is combustible and when spilled on a hot surface can ignite and cause a fire.
Do not fill the fuel tank while the engine is running or hot.
EXHAUST HAZARD
The exhaust contains poisonous carbon dioxide which is colorless and odorless.
Do not operate this equipment in a closed building.
3308972
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.
If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing 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 spray area free of debris, including solvent, rags, and gasoline.
Disconnect all electrical equipment in the spray area.
Extinguish all open flames or pilot lights in the spray area.
Do not smoke in the spray area.
Do not turn on or off any light switch in the spray area while operating or if fumes are present.
Do not operate a gasoline engine in the spray area.
Ground the sprayer to a true earth ground with the ground wire and clamp (supplied).
Use only electrically conductive hoses.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
Keep clear of all moving parts when starting or operating the sprayer.
Before servicing the equipment, follow the Pressure Relief Procedure on page 10 to prevent the
equipment from starting unexpectedly.
NOTE: This is an example of the DANGER label on your sprayer. This label is available in other languages, free of
charge. See page 27 to order.
FIRE AND
EXPLOSION HAZARD
Spray painting, flushing or cleaning equipment with flammable
liquids in confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground
equipment, hoses, containers and objects being sprayed.
Avoid all ignition sources such as static electricity from plastic
drop cloths, open flames such as pilot lights, hot objects such as
cigarettes, arcs from connecting or disconnecting power cords
or turning light switches on and off.
Failure to follow this warning can result in death or serious injury.
READ AND UNDERST AND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Liquids can be injected into the body by high pressure airless
spray or leaks – especially hose leaks.
Keep body clear of the nozzle. Never stop leaks with any part of the
body . Drain all pressure before removing parts.Avoid accidental
triggering of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
“Surgical Treatment”.
Failure to follow this warning can result in amputation or serious
injury .
SKIN INJECTION
HAZARD
3089724
Component Identification
HYDRAULIC RETURN LINE TO MOT OR
MOTOR RESET BUTTON
HYDRAULIC MOTOR
FLUID
OUTLET
PRESSURE
DRAIN VALVE
HYDRAULIC SUPPLY LINE TO MOT OR
GASOLINE
FILL CAP
HYDRAULIC
RESERVOIR
HYDRAULIC
PUMP
DISPLACEMENT PUMP
SUCTION HOSE
Fig 1
1. Connect the Hose and Gun
a. Remove the plastic cap plug from the outlet
tee and screw an accessory, conductive or
grounded spray hose onto the 1/4 npsm(f) outlet nipple. See Fig 1.
b. Connect a small diameter, 3 ft (0.9 m) whip
hose between the main hose and a spray gun,
if desired, for more flexible gun movement.
See Fig 1.
Setup
NOTE: Use thread sealant on all male threads except at
2. Fill the Packing Nut/Wet Cup 1/3 full with Graco
SUCTION TUBE
c. Don’t use thread sealant on the swiveling nut
of the hose couplings, and
spray tip yet.
swivel unions. Swivel unions are made to self–
seal, and using thread sealant prevents the
swivel from turning freely.
Throat Seal Liquid (TSL), supplied. See Fig. 2.
don’ t install the
5308972
Setup
3. Check the Hydraulic Oil Level
a. Unscrew the hydraulic oil fill cap. See Fig 2.
The dipstick is attached to the cap. The oil
should be up to the full line on the dipstick.
CAUTION
To prevent damage to the cooling system and
hydraulic pump, use
169236 (5 gal./20 liter) or 207428 (1 gal/3.8 liter).
Other types of hydraulic oil may damage the hydraulic components.
b. Add oil as needed to the proper level. A
completely full hydraulic system contains
about 5 gallons (20 liters) of oil.
P ACKING
NUT/ WET
CUP
only
Graco Hydraulic Fluid,
HYDRAULIC OIL
FILL CAP
OIL DIPSTICK
GASOLINE
FILL CAP
FUEL
SHUTOFF
VALVE
ENGINE OIL
FILL PLUG
Fig 3
4. Check the Engine Oil Level
a. Remove the dipstick. See Fig 3.
b. Check to be sure the oil is up to the full mark
on the dipstick.
7872A
Fig 2
7871A
c. If oil is needed, see the chart below for the
recommended oil type and weight.
d. Crank case capacity: 1.5 quarts (1.4 liters)
RECOMMENDED LUBRICATION OIL:
Use a high
quality detergent oil of American Petroleum Institute
(API) service class SG or SH for regular use and for
breaking in a new engine.
GRADE OF OIL CHART
SEASON OR TEMPERA TUREGRADE OF OIL
Spring, Summer, AutumnSAE 10W–30
30F to 0, WinterSAE 5W–20 or 10W–20
3089726
Setup
5. Fill the Fuel Tank
WARNING
FIRE AND EXPLOSION HAZARD
Fuel spilled on a hot surface can cause
a fire or explosion and serious bodily
injury and property damage. Shut off
engine and let it cool before filling the
tank. Carefully follow steps 5.a. to 5.c.,
below, being sure not to spill any fuel.
a. Close the fuel shutoff valve. See Fig 3.
b. Use only clean, fresh, well-known brands of
unleaded regular grade gasoline
minimum octane requirements are 87 octane
in the U.S.A. and 96 octane elsewhere.
c. Remove the gasoline fill cap and fill the tank.
Be sure the air vent in the fill cap is not
plugged so gasoline can flow to the carburetor,
then replace the cap. See Fig 3.
. The
6. Grounding
WARNING
FIRE AND EXPLOSION HAZARD
To reduce the risk of static sparking, fire
or explosion which can result in serious
bodily injury and property damage,
ground the sprayer, all system components, and
the object being sprayed as instructed under FIREOR EXPLOSION HAZARD on page 3.
Connect the ground wire and clamp (provided) to a
true earth ground. See Fig 4.
CLAMP
d. Fuel tank capacity: 1.7 gallons (6.5 liters)
e. Gasoline consumption at the maximum oper-
ating speed of 2900 RPM is about 1.3 gallons/
hour (4.9 liters/hour).
Fig 4
7. Flush the sprayer to remove the oil which was left
in the pump after factory testing to protect the
pump from corrosion. See Flushing .
7873A
7308972
Flushing
When to Flush
1. New sprayer. Your new sprayer was factory tested
with lightweight oil which was left in to protect
pump parts from corrosion.
Before using oil–base paint,
spirits only.
Before using water–base paint,
mineral spirits, followed by soapy water, then a
clean water rinse.
2. Changing colors. Flush with a compatible solvent
such as mineral spirits.
3. Changing from water–base to oil–base paint.
Flush with soapy water, then mineral spirits.
How to Flush
flush with mineral
flush with
WARNING
INJECTION HAZARD
Follow the Pressure Relief Procedure
Warning on page 10. Remove the spray
tip before flushing.
1. Engage the gun safety latch. Remove the spray tip
from the gun.
2. Pour enough clean, compatible solvent to fill the
pump and hoses into a large, grounded metal pail.
3. Place the suction tube into the pail or tilt the
sprayer back (it will support itself) and place the
pail under the pump. Then tilt the sprayer forward
to lower the pump into the pail.
4. Changing from oil–base to water–base paint.
Flush with mineral spirits, followed by soapy water,
then a clean water flush.
5. Storage.
Water–base paint:
spirits and leave the pump, hose and gun filled
with mineral spirits. Follow the Pressure Relief
Procedure Warning, page 10.
Oil–base paint:
the Pressure Relief Procedure Warning, page
10.
6. Startup after storage.
Before using water–base paint,
spirits with soapy water and then clean water.
When using oil–base paint,
spirits with fluid to be sprayed.
8. Turn and hold the ignition key to START until you
hear the engine “catch”, then release the key to RUN.
See Fig 5. If the engine does not start, open the
choke a little (push in on head). If the engine floods,
open the choke all the way and try again.
FUEL
SHUTOFF
VALVE
PRESSURE
CONTROL
KNOB
flush with water, then mineral
flush with mineral spirits. Follow
flush out mineral
flush out mineral
AIR FILTER
CHOKE
4. Turn the pressure control knob
until all spring tension is relieved. You will be able
to feel it. The sprayer is now set at the lowest
pressure setting. Turning the knob further will
remove it. Tighten the knob locknut to set. See Fig
5.
5. Open the bypass valve. The valve lever will be
parallel to the body of the valve. See Fig 5.
6. Open the fuel shutoff valve by turning it to horizontal. See Fig 5.
7. Close the choke by pulling out on the choke head.
See Fig 5.
counterclockwise
CAUTION
The bypass valve must be opened when starting the
sprayer to prevent damaging the starter.
3089728
ON/OFF
BYPASS
VALVE
Fig 5
9. After the engine is warm, gradually open the choke
lever (push choke head in completely) and close
the bypass valve. See Fig 5.
10. Point the gun into the grounded metal pail and hold
a metal part of the gun firmly against the pail.
NOTE: To save the fluid in the pump and hose, trigger
the gun into the paint container or a separate
clean container . At the same time, slowly turn the
pressure control knob clockwise just enough to
start the pump. When solvent appears, release
the trigger and continue as below.
SWITCH
7874A
WARNING
Flushing
12. Circulate the solvent until the system is thoroughly
flushed.
FIRE AND EXPLOSION HAZARD
To reduce the risk of static sparking and
splashing when flushing, always remove
the spray tip from the gun and hold a
metal part of the gun firmly to the side of a
grounded metal pail.
11. Making firm metal-to-metal contact, hold the gun
firmly to the side of the grounded solvent pail.
Trigger the gun. At the same time, slowly turn the
pressure control knob clockwise just enough to
start the pump.
13. Release the trigger and engage the gun safety
latch.
14. If you are going to start spraying, place the
pump or suction tube into the supply container.
Follow the Pressure Relief Procedure on page
10. Engage the gun safety latch until you are ready
to prime the pump. See Step 3, page 9.
15. If you are going to store the sprayer, be sure
your final flush is with an oil–based solvent, such
as mineral spirits. Remove the suction tube or
pump from the solvent pail. Follow the PressureRelief Procedure on page 10. Engage the gun
safety latch, but leave the drain valve open.
9308972
Operation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
install or clean the spray tip.
1. Engage the gun safety latch.
2. Open the bypass valve.
2. Starting the Sprayer
a. Open the bypass valve to make startup easier.
In the open position, the valve lever is parallel
to the body of the valve. See Fig 6. Close the
filter drain valve.
b. Turn the pressure control knob
wise
until all spring tension is relieved. You will
be able to feel it. The sprayer is now set at the
lowest pressure setting. Turning the knob further will cause it to fall off.
c. Open the fuel shutoff valve. See Fig 6.
d. If the engine is cold, close the choke by turn-
ing the lever to the ON position (horizontal).
See Fig 6.
3. Turn and hold the ignition key to ST ART until you
hear the engine “catch”, then release the key to
RUN. See Fig 6. If the engine does not start,
open the choke a little (push the choke head in).
If the engine floods, open the choke all the way
and try again.
e. After the engine is warm, gradually open the
choke lever (push choke head in completely)
and close the bypass valve. See Fig 6.
counterclock-
3. Turn the ignition key to OFF.
4. Close the fuel shutoff valve.
5. Disengage the gun safety latch. Hold a metal part
of the gun firmly to the side of a grounded metal
pail, and trigger the gun to relieve pressure.
6. Engage the gun safety latch.
7. Open the pressure drain valve, having a container
ready to catch the drainage. Leave the valve open
until you are ready to spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved after
following the steps above,
guard retaining nut or hose end coupling and VERY
SLOWLY loosen the part to relieve pressure gradually,
then loosen completely. Now clear the tip or hose.
1. Prepare the Fluid
wrap a rag around the tip
AIR FILTER
CHOKE
FUEL
SHUTOFF
VALVE
PRESSURE
CONTROL
KNOB
ON/OFF
BYPASS
VALVE
Fig 6
NOTE: In cold weather, run the engine for about 15
minutes with the bypass valve open before
starting the displacement pump, to help avoid
hydraulic motor stalling.
f.Follow the Pressure Relief Procedure
Warning on page 10, to shut off the sprayer.
SWITCH
7874A
a. Prepare the fluid according to the fluid manu-
facturer’s recommendations.
b. Place the pump or suction tube into the fluid
container.
30897210
WARNING
To stop the engine in an emergency, turn OFF
the ignition key. Close the bypass valve if possible.
See Fig 6. Then follow the Pressure Relief Proce-
dure Warning on page 10.
Operation
If the motor stalls during operation, turn OFF the igni-
tion key. With your hand, firmly press straight down on
the motor reset button. Now try to restart the sprayer. If
it will not start, refer to the separate motor manual,
307158.
CAUTION
CAUTION
The engine throttle has been set and locked at 3000
RPM. The sprayer warranty will be voided and the
hydraulic pump life shortened if this adjustment is
changed.
Never use a hammer to depress the reset button, as
it could cause serious internal motor damage.
4. Prime the Pump
a. Be sure the gun safety latch is engaged.
b. Don’t install the spray tip yet!
c. If the engine has not been started, follow the
procedure in Step 2., page 10.
d. Disengage the gun safety latch.
e. Point the gun into a grounded metal pail and
hold a metal part of the gun
pail. See the WARNING below.
f.Squeeze the trigger and
sure control knob
start the pump. See Fig 6.
g. Operate the pump until all air is purged from
the pump and hoses and the fluid is flowing
freely from the gun.
h. Release the trigger and engage the safety
latch.
i.Turn the pressure control knob
wise
until all spring tension is relieved. You will
be able to feel it. The sprayer is now at the
lowest pressure setting. Turning the knob
further will remove it.
j.Follow the Pressure Relief Procedure on
page 10. Then install the spray tip in the gun
as instructed in the separate gun or tip instruction manual. If you are using the RAC IV
supplied with this sprayer, see manual 308644.
5. Adjusting the Pressure
a. Turn the pressure control knob
increase and
pressure. Tighten the knob locknut to set.
b. Always use the lowest pressure that is neces-
sary to completely atomize the fluid.
clockwise
counterclockwise
firmly
against the
slowly
turn the pres-
just enough to
counterclock-
clockwise
to decrease the
to
CAUTION
Operating the sprayer at a higher pressure than
necessary wastes fluid, causes early tip wear, and
shortens the sprayer life.
c. If more coverage is needed, use a larger tip
rather than increasing the pressure.
d. Check the spray pattern. The tip size and
angle determines the pattern width and flow
rate. See the separate manual received with
your gun.
6. Cleaning a Clogged Tip
WARNING
INJECTION HAZARD
To reduce the risk of a fluid injection
injury, NEVER hold your hand, body or a
rag in front of the spray tip when
cleaning or checking for a cleared tip. To reduce
the risk of a fire or explosion, always hold the gun
firmly against the side of a grounded metal waste
container when checking to see if the tip was
cleared or when using a self–clearing tip.
a. Follow the Pressure Relief Procedure
Warning on page 10.
b. Clean the front of the tip frequently during the
day to keep the fluid from building up and clogging the tip. To clean, and to clear a tip if it
clogs, refer to your separate gun instruction
manual. If you are using the RAC IV tip guard
and SwitchTip, refer to manual 308644.
7. Shutting Off the Sprayer
a. Whenever you stop spraying, even for a short
break, follow the Pressure Relief ProcedureWarning on page 10.
b. Clean the tip and gun as recommended in your
separate gun or tip manual.
c. Flush the sprayer at the end of each work day
if using water–based fluid or if it could harden
in the sprayer over night. See FLUSHING,
page 8. Use a compatible solvent to flush,
then fill the pump and hoses with solvent such
as mineral spirits to help prevent pump corrosion.
Relieve pressure!
d. For long term shutdown or storage,
the sprayer with mineral spirits to prevent
pump corrosion.
8. Adjusting the Intake Valve Ball Travel.
a. The pump is set to handle medium volume,
low viscosity fluid. To adjust the pump for
higher flow or heavier viscosity fluid, disassemble the intake valve as instructed in the
appropriate pump manual listed in the parts list
and move the ball stop pin to a higher set of
holes. This increases the ball travel.
Relieve pressure!
always
fill
11308972
Maintenance
A
1. Always stop the pump at the bottom of itsstroke when you take a break and at the end of
the day. This helps keep fluid from drying on the
rod and damaging the packings.
2. Keep the displacement pump packing nut/wetcup 1/3 full of TSL at all times. The TSL helps
protect the packings and rod.
3. Check the tightness of the packing nut daily. It
should be tight enough to stop leakage but no
tighter.
CAUTION
Proper engine and hydraulic oil level is important to
prevent costly damage to the sprayer. Check it as
often as recommended in Steps 4 and 5., below.
4. Check the hydraulic oil level weekly. The oil
must be up to the top mark on the dipstick. Use
only Graco Hydraulic Oil.
5. Check the engine oil level at least weekly. The
oil must be up to the FULL mark on the dipstick.
The engine should not use more than one ounce
of oil per hour of operation. Consult the engine
manual, supplied, for additional recommended
maintenance.
9. To change the hydraulic oil:
a. Follow the Pressure Relief Procedure
Warning on page 10.
b. Place a waste container under the drain plug
of the hydraulic reservoir. See Fig 7. Unscrew
the plug and drain the reservoir. Reinstall the
plug before proceeding.
c. Remove the nuts and reservoir cover.
d. Remove the return line filter and install a new
filter assembly.
e. Inspect the inlet filter and replace it if needed.
f.Install the reservoir cover and nuts. Then pour
in five gallons (19 liters) of Graco Hydraulic Oil
through the intake filter. See Fig 7. Install the
fill cap.
HYDRAULIC
OIL FILL
CAP
NUTS
COVER
INLET
FIL TER
6. Inspect the return line filter frequently for clogging. Replace it after every 500 hours of operation
or every 6 months, whichever comes first. A
clogged or worn out filter reduces filter capability
and will damage the hydraulic pump.
7. Check the battery water level periodically and
refill as necessary.
8. Change the hydraulic oil after every 2000hours of operation or every 12 months, whichever
comes first. For continuous operation in temperatures above 85F (30C), change the oil after
every 1000 hours or 6 months of use. See Step 9.
for the procedure.
CAUTION
Cleanliness is essential when servicing the hydraulic
system. Use special care to avoid getting dust or dirt
into the hydraulic system to prevent damage to the
hydraulic components.
RETURN
LINE
FIL TER
Fig 7
HYDRAULIC OIL DRAIN
PLUG LOCA TED
UNDER RESERVOIR
7875
ENGINE OIL
FILL PLUG
30897212
Troubleshooting
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure ReliefProcedure on page 10.
Check everything in the troubleshooting chart before disassembling the sprayer.
PROBLEMCAUSESOLUTION
Gas engine doesn’t work properly.Consult engine manual, supplied.
Gas engine will not start.Check battery .
Gas engine operates, but
displacement pump doesn’t
operate.
Displacement pump operates, but
output is low on upstroke.
Displacement pump operates but
output is low on downstroke and/
or on both strokes.
Paint leaks into wetcup.Loose wet–cup.
Excessive leakage around
hydraulic motor piston rod wiper.
Hydraulic motor stalled.
Pressure setting too low.
Displacement pump outlet filter (if
used) is dirty or clogged.
Tip or tip filter (if used) is clogged.
Hydraulic fluid too low.
Hydraulic pump worn or damaged.
Hydraulic motor worn or damaged.
Displacement pump rod seized by
dried paint.
Piston ball check not seating properly .
Piston packings worn or damaged.
Piston packings worn or damaged.
Intake valve ball check not seating
properly.
Throat packings worn or damaged.
Piston rod seal worn or damaged.Replace these parts. See manual 307158.
Turn the ignition key to OFF. Firmly press
straight down on motor reset button. Restart
sprayer, see page 10. If it doesn’t start, see
manual 307158.
Increase pressure. See page 11.
Clean the filter.
Remove tip and/or filter and clean.
Shut off sprayer and add fluid immediately*. See
page 5.
Return sprayer for repair.
Return sprayer for repair.
Service pump. See pump manual.
Service piston ball check. See pump manual.
Replace packings. See pump manual.
Replace packings. See pump manual.
Service intake valve ball check. See pump
manual.
Tighten just enough to stop leakage.
Replace packings. See pump manual.
Fluid delivery is low.Pressure setting too low.
Displacement pump outlet filter (if
used) is dirty or clogged.
Hydraulic pump is worn or damaged.
Hydraulic motor is worn or damaged.
Large pressure drop in fluid hose.
The sprayer overheats.Cooler or blower is worn or damaged.Replace. See page 15.
Spitting from gun.Air in fluid pump or hose.
Fluid supply is low or empty .
*Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid. See pages 6 and 27.
Increase pressure. See page 11.
Clean filter.
Return sprayer for repair.
Return sprayer for repair.
Use larger diameter hose.
Check for loose connections on siphon
assembly, tighten, then reprime pump.
Refill supply container.
13308972
Replacing the Hydraulic Pump
1. Follow the Pressure Relief Procedure Warning
on page 10. Let the hydraulic system cool before
beginning the service procedure.
2. Unscrew the reservoir drain plug (51, page 24),
having a container ready to catch the draining
fluid.
3. Disconnect the hose (7) from the bypass valve (9)
by loosening the hose clamp (8). See Fig 8.
4. Loosen the hose clamp (8) and pull the hose (85)
off the hose insert (5) near the elbow (3). See Fig
8.
5. Loosen the hose clamp (54) on the hose (53) just
above the hydraulic pump (107). See Fig 8.
6. Loosen the tube fitting nut (18) of hose (22). See
Fig 8.
8. Pull the pump straight off the pump support.
9. Loosen the setscrews (108) on the pump half of
the coupler (109). See Fig 9.
10. Remove all fittings from the old pump and install
them on the new pump in the same order.
11. Check Dimension A as shown in Fig 9. When the
dimension is correct, tighten the setscrews (108),
slide the new pump assembly onto the pump
support (117) and recheck the dimension.
CAUTION
The correct coupling dimension is critical to avoid
improper coupler engagement to the coupler spider
which will damage the coupler and make the sprayer
inoperable.
7. Remove the two capscrews (150), lockwashers
(66) and washers (64) holding the pump (107) to
the support (117). See Fig 8.
113
112
117
53
54
52
4
7
8
9
Fig 8
152
85
8
5
3
22
18
12. Reconnect the hoses. Reinstall the reservoir plug
(51, page 24)), and refill the reservoir with clean,
Graco approved hydraulic oil.
108
109
114
115
49,66
107
150,66,64
7876A
30897214
Replacing the Cooler and Blower
1. Follow the Pressure Relief Procedure Warning
on page 10. Let the hydraulic system cool before
beginning the service procedure.
2. Remove the hydraulic pump as instructed in the
previous section.
3. Disconnect the cooler to reservoir return hose (7.)
by loosening the hose clamp (8). See Fig 8.
4. Remove the cooler capscrews (49) and lockwashers (66). See Fig 8.
c. Pull the pump support and blower off far
enough for the blower to fall out of the bottom
of the housing.
d. Install a new blower. Secure the pump support
(117) to the engine. See Fig 8.
e. Check Dimension A as shown in Fig 9 and
tighten the coupler setscrews (108). Butt the
blower hub up to the coupler half, keeping the
blower in full contact with the coupler, and
tighten the blower setscrews (B).
5. Remove the fan guard (23, page 24). See Fig 8.
6. Pull the cooler (115) straight out.
7. Inspect the rubber pad (116) for wear and replace
if necessary. See Fig 9.
8. Inspect the blower wheel (114) for wear. See Fig 8.
If it needs to be replaced, follow Steps 8a–8e.
a. Unscrew the setscrews (108) from the engine
half of the coupler (109). Unscrew the blower
setscrews (B). See Fig 9.
b. Remove the capscrews (112) and lockwashers
(113) holding the pump support (117) to the
engine and pull the support off. See Fig 8.
108
115
23
117
CAUTION
The correct coupling dimension is critical to avoid
improper coupler engagement to the coupler spider
which will damage the coupler and make the sprayer
inoperable.
9. Install the cooler.
10. Fold the flaps of the pad (116) toward the cooler
fins and install the fan guard (23, page 24), capscrews (49) and lockwashers (66). See Fig 8.
11. Reinstall the hydraulic pump and reconnect all
hoses.
ENGINE
B
Fig 9
A
DIMENSION A
0.05” ± 0.010
(1.27 mm ± –0.254)
A
107
109
108
116
TOP VIEW
15308972
Displacement Pump Service
210–208 Displacement Pump
Disconnect the Displacement Pump
1. Flush the pump if possible. Stop the pump on the
down stroke.
2. Follow the Pressure Relief Procedure Warning
on page 10.
3. Reference Roof Rig Parts Drawings, page 22.
4. Remove the suction tube and fluid hose from the
displacement pump.
5. Unscrew the three tie rod locknuts (48). See appropriate sprayer parts drawing.
6. Unscrew the shouldered nut (35). Pull the
displacement pump (46) off the tie rods (47).
7. Screw the jam nut (90) up onto the connecting rod
(91).
9. Refer to separate pump manual for displacement
pump repair instructions.
Reconnecting the Displacement Pump
1. Screw the connecting rod (91) into the connecting
rod coupling (36, page 22) and replace the lower
cotter pin (89). Screw the jam nut (90) all the way
down. See appropriate sprayer parts drawing.
2. Mount the displacement pump (46) onto the tie
rods (47).
3. Screw the shouldered nut (35) onto the hydraulic
motor (29). Screw the tie rod locknuts (48) onto
the tie rods (47) and torque to 35–50 ft-lb (47–68
N.m).
4. Reattach the hoses to the displacement pump.
5. If the grounding wire was disconnected before
service, be sure to reconnect it before operating
the sprayer.
8. Remove the lower cotter pin (89) and unscrew the
connecting rod (91) from the connecting rod coupling (36, page 22).
6. Start the pump and operate it slowly to check the
tie rods for binding. Adjust the tie rod locknuts, if
necessary to eliminate binding.
30897216
Displacement Pump Service
236466, 237510, 222801 Displacement Pumps
Disconnecting the Displacement Pump
1. Flush the pump, if possible. Stop the pump at the
bottom of its stroke.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 10.
2. Relieve the pressure.
3. Reference Roof Rig Parts Drawings, pages 18
through 21.
Reconnecting the Displacement Pump
1. Make sure coupling nut (170) and coupling collars
(80) are in place on displacement rod (Ref. 29).
2. Use at least two people to hold the displacement
pump while another reconnects it to the motor (see
the preceding CAUTION). Orient the pump fluid
outlet (81) to the hydraulic inlet (76) as was noted
in step 5 under Disconnecting the DisplacementPump. Position the displacement pump (46) on
the tie rods (47).
4. Disconnect the air or hydraulic hose and the fluid
hose. Plug all hydraulic hoses immediately, to
prevent contamination of the hydraulic system.
5. Disconnect the displacement pump (46) from the
motor (29) as follows. Note the relative position of
the pump fluid outlet (81) to the hydraulic inlet (76)
of the motor. If the motor does not require servicing, leave it attached to its mounting.
CAUTION
Use
at least
connecting the pump. This pump is too heavy for one
person. Support the displacement pump while it is
being disconnected, to prevent it from falling and
causing injury or property damage.
If the pump is mounted on a cart, slowly tip the cart
backward until the handle rests on the ground, then
disconnect the displacement pump.
6. Using an adjustable wrench (or hammer and
punch), unscrew the coupling nut (170) from the
motor shaft ( Ref. 29). Take care not to lose or
drop the coupling collars (80).
two people when lifting, moving, or dis-
3. Screw the nuts (48) onto the tie rods (47) and
torque to 81–89 N.m (60–66 ft-lb).
4. Screw coupling nut onto motor shaft (Ref. 29),
loosely. Hold the motor shaft flats with a wrench to
keep it from turning. Use an adjustable wrench to
tighten the coupling nut. Torque to 196–210 N.m
(145–155 ft-lb).
5. Reconnect all hoses. Reconnect the ground wire if
it was disconnected. Fill the packing nut (2) 1/3 full
of Graco Throat Seal Liquid or compatible solvent.
6. Turn on the hydraulic power supply. Open the
hydraulic return line valve
valve. Run the pump slowly to ensure proper
operation.
first
, then the supply line
WARNING
7. Hold the tie rod flats with a wrench to keep the
rods from turning. Unscrew the nuts (48) from the
tie rods (47). Carefully remove the displacement
pump (46) from the motor (29).
8. Refer to separate manual listed in parts list for
displacement pump service. To service the hydraulic motor, refer to the separate motor manual,
supplied.
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 10.
7. Before returning the pump to production, relievethe pressure and retorque the packing nut (2) to
136–149 N.m (100–110 ft-lb).
The English language DANGER label shown on
page 4 is also on your sprayer. If you have painters
who do not read English, order one of the following
labels to apply to your sprayer . The drawing below
shows the best placement of these labels for good
visibility .
Order the labels directly from Graco, free of
charge. Toll Free: 1–800–328–0211
Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of
any special extended or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or
replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed,
operated and maintained in accordance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or
substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,
installation, operation or maintenance or structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and
transportation.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property , or any
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
GRACO MAKES NO WARRANTY , AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR
A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES, EQUIPMENT , MA TERIALS OR COMPONENTS SOLD BUT
NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, gas engines,
switches, hose, etc.), are subject to the warranty , if any, of their manufacturer. Graco will provide purchaser with reasonable assistance
in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,
breach of warranty , the negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties
reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures
judiciaires exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées.
ADDITIONAL WARRANTY COVERAGE
Graco does provide extended warranty and wear warranty for products described in the “Graco Contractor Equipment Warranty
Program”.
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Foreign Offices: Belgium, England, Korea, France, Germany , Hong Kong, Japan
Sales Offices: Minneapolis, Detroit
GRACO INC.P.O. BOX 1441MINNEAPOLIS, MN55440–1441
http://www.graco.com
PRINTED IN U.S.A. 308972 April 1999
30897228
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.