Graco 19D873 User manual

334599L
EN
Repair
ProConnect Endurance
Displacement Pump
For repair of ProConnect Endurance Displacement Pump. For professional
use only.
Models: 17C487, 17C488, 17C489, 17C721, 17M992, 24Z731, 19Y298, 19B732, 19D873
Important Safety Instructions
Read all warnings and instructions in this manual and related manuals.
Be familiar with the controls and the proper usage of the equipment.
Save these instructions.
Use only genuine Graco replacement parts.
The use of non-Graco replacement parts may void warranty.

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Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Disassemble Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Assemble Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Warnings
334599L 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this
equipment. The exclamation 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
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:
•Do not spray flammable or combustible materials near an open flame or sources of
ignition such as cigarettes, motors, and electrical equipment.
•Paint or solvent flowing through the equipment is able to result in static electricity. Static
electricity creates a risk of fire or explosion in the presence of paint or solvent fumes. All
parts of the spray system, including the pump, hose assembly, spray gun, and objects in
and around the spray area shall be properly grounded to protect against static discharge
and sparks. Use Graco conductive or grounded high-pressure airless paint sprayer
hoses.
•Verify that all containers and collection systems are grounded to prevent static discharge.
Do not use pail liners unless they are anti static or conductive.
•Connect to a grounded outlet and use grounded extensions cords. Do not use a 3-to-2
adapter.
•Do not use a paint or a solvent containing halogenated hydrocarbons.
•Do not spray flammable or combustible liquids in a confined area.
•Keep spray area well-ventilated. Keep a good supply of fresh air moving through the area.
•Sprayer generates sparks. Keep pump assembly in a well ventilated area at least 20 feet
(6.1 m) from the spray area when spraying, flushing, cleaning, or servicing. Do not spray
pump assembly.
•Do not smoke in the spray area or spray where sparks or flame is present.
•Do not operate light switches, engines, or similar spark producing products in the spray
area.
•Keep area clean and free of paint or solvent containers, rags, and other flammable
materials.
•Know the contents of the paints and solvents being sprayed. Read all Safety Data Sheets
(SDS) and container labels provided with the paints and solvents. Follow the paint and
solvents manufacturer’s safety instructions.
•Fire extinguisher equipment shall be present and working.

Warnings
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WARNING
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In
the event that injection occurs, get immediate surgical treatment.
•Do not aim the gun at, or spray any person or animal.
•Keep hands and other body parts away from the discharge. For example, do not try to
stop leaks with any part of the body.
•Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
•Use Graco nozzle tips.
•Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip
clogs while spraying, follow the Pressure Relief Procedure for turning off the unit and
relieving the pressure before removing the nozzle tip to clean.
•Equipment maintains pressure after power is shut off. Do not leave the equipment
energized or under pressure while unattended. Follow the Pressure Relief Procedure
when the equipment is unattended or not in use, and before servicing, cleaning, or
removing parts.
•Check hoses and parts for signs of damage. Replace any damaged hoses or parts.
•This system is capable of producing 3300 psi. Use Graco replacement parts or
accessories that are rated a minimum of 3300 psi.
•Always engage the trigger lock when not spraying. Verify the trigger lock is functioning
properly.
•Verify that all connections are secure before operating the unit.
•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the
controls.
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can
cause serious chemical reaction and equipment rupture. Failure to follow this
warning can result in death, serious injury, or property damage.
•Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon
solvents or fluids containing such solvents.
•Do not use chlorine bleach.
•Many other fluids may contain chemicals that can react with aluminum. Contact your
material supplier for compatibility.
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 SDSs 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.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent
serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and
burns. This protective equipment includes but is not limited to:
•Protective eye wear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
CALIFORNIA PROPOSITION 65
This product contains a chemical known to the State of California to cause cancer,
birth defects or other reproductive harm. Wash hands after handling.

Pressure Relief
334599L 5
Pressure Relief
Trigger Lock
Always engage the trigger lock when sprayer
is stopped to prevent the gun from being
triggered accidentally by hand or if dropped
or bumped.
Pressure Relief Procedure
1. Engage the trigger lock.
ti24612a
LineLazer ES 1000
This equipment stays pressurized until
pressure is manually relieved. To help
prevent serious injury from pressurized
fluid, such as skin injection, splashed
fluid and moving parts, follow the
Pressure Relief Procedure whenever
sprayer is stopped and before sprayer is
cleaned or checked, and before
equipment is serviced.
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LineLazer ES 1000

Pressure Relief
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2. Turn the ON/OFF switch to OFF posi-
tion. Wait 7 seconds for power to dissi-
pate.
3. Unplug power cord or shut engine off.
For LineLazer ES 1000, unplug power
cord and disconnect battery.
4. Engage the trigger lock.
5. Remove tip guard.
6. Turn pressure control to the lowest set-
ting. Disengage trigger lock.
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LineLazer ES 1000

Pressure Relief
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7. Hold a metal part of the gun firmly to a
grounded metal pail. Trigger the gun to
relieve pressure.
8. Engage the trigger lock.
9. Open any fluid drain valves in system.
Leave drain valves open until ready to
spray again.
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LineLazer ES 1000
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Pump Removal
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Pump Removal
Pump removal includes disconnecting the
fluid inlet and outlet and removing the pump.
1. Use a hammer to loosen pump retaining
nut.
2. Turn pump retaining nut to free pump
rod cover.
3. Swing pump rod cover open.
4. Disconnect outlet hose and suction
hose from pump.
5. Slide pump out of the drive housing.
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Repair
334599L 9
Repair
Disassemble Pump
1. Remove packing nut and throat
adjustment spacer. Retaining nuts are
not removable and not sold separately.
2. Unscrew cylinder from intake valve.
3. Dissemble intake valve. Clean and
inspect. O-ring may require a pick for
removal.
4. Tap piston rod out of cylinder with a
hammer or flip over and tap piston rod
out against a bench.
NOTICE
If using a pick to remove the O-ring use care
to avoid damage to the machined surfaces.
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Repair
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5. For Model 19Y298 Only:
Remove piston rod from sleeve, or
remove sleeve from cylinder if only rod
was removed in previous step. Ensure
o-ring inside cylinder is removed.
6. Unscrew piston valve from piston rod.
7. Clean and inspect parts. The piston
has a special thread locking/sealing
patch. Apply thread sealant to the
threads, if needed.
Do not clean or wipe the piston valve
threads. Cleaning the piston valve
threads could destroy the special sealing
patch and cause the piston valve to come
loose during operation, causing a pump
burst and possible serious bodily injury.
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