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Warnings 

4

3A4347D

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 Airlessco 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 Airlessco 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.

MOVING PARTS HAZARD

Moving parts can pinch, cut 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

 and disconnect all power sources.

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.

Summary of Contents for 17M988

Page 1: ...epair Pump 17M990 17M991 PRO DUTY Pump 17M988 17M989 Important Safety Instructions Read all warnings and instructions in this manual and related manuals Be familiar with the controls and the proper us...

Page 2: ...Pump Removal 7 PRO DUTY Quick Repair Pump Removal 7 PRO DUTY Pump Removal 8 Repair 9 Disassemble Pump 9 Assemble Pump 10 Pump Installation 14 PRO DUTY Quick Repair Pump Installation 14 PRO DUTY Pump...

Page 3: ...ct against static discharge and sparks Use Airlessco conductive or grounded high pressure airless paint sprayer hoses Verify that all containers and collection systems are grounded to prevent static d...

Page 4: ...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 D...

Page 5: ...rn the ON OFF switch to OFF position 3 Unplug power cord or shut engine off 4 Remove tip guard 5 Turn pressure control to the lowest set ting Disengage trigger lock This equipment stays pressurized un...

Page 6: ...fluid drain valves in system Leave drain valves open until ready to spray again 9 If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved a VERY SLOWLY loosen tip...

Page 7: ...UTY Quick Repair Pump Removal Perform Pressure Relief Procedure page 5 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 Discon...

Page 8: ...Pressure Relief Procedure page 5 3 If necessary remove guard or pail hook to gain access to the pump 4 Disconnect outlet hose and suction hose from pump 5 Use a screwdriver to push retaining spring u...

Page 9: ...pair pump retain ing nuts are not removable and not sold separately 3 Unscrew cylinder from intake valve 4 Disassemble intake valve Clean and inspect 5 O ring at the bottom may require a pick for remo...

Page 10: ...d seat Replace if necessary O ring at the bottom may require a pick for removal 11 Remove and discard the upper throat packing with glands from the cylinder Remove and discard the lower packing with g...

Page 11: ...r and install in piston When thread sealant is applied to piston valve threads ensure that none gets on the ball e Torque to 175 15 in lb 20 2 N m 3 Assemble upper throat packing stack Use leather thr...

Page 12: ...and brown V packings 7 Grease both piston rod diameters that will go through the packings Gently guide displacement rod up through pack ings Tap bottom of piston valve as nec essary with a leather or...

Page 13: ...lug from power source OR Turn engine driven sprayers OFF Tighten packing nut and intake valve housing down an additional 1 2 1 turn This should stop or lessen leakage This allows approximately 50 gall...

Page 14: ...into the drive housing 3 Slide pump all the way into drive hous ing 4 Close pump rod cover Make certain that it is flush against drive housing 5 Use both hands to tighten pump retain ing nut 6 Use a...

Page 15: ...p are flush with drive housing face Back off pump and jam nut to align pump outlet to side Tighten jam nut by hand then tap 1 8 to 1 4 turn with a hammer to approximately 75 5 ft lb 102 N m 4 Connect...

Page 16: ...Parts 16 3A4347D Parts 13 7 6 12 19 20 4 2 8 17 10 18 16 22 25 24 21 23 11 5 ti29881a...

Page 17: ...5 VALVE intake hous ing 1 13 17P097 KIT guide ball assembly includes 16 18 1 16 16D531 O RING 1 17 17J187 O ring special pis ton seat 1 18 17S053 O RING 1 19 125724 V PACKING piston V MaxTM UHMWPE 3 2...

Page 18: ...um fluid working pressure 3300 psi 227 bar 22 7 MPa Inlet Outlet Sizes Fluid inlet size 1 0 in diameter Fluid outlet size 1 4 in Wetted materials on all models stainless steel PTFE leather nylon zinc...

Page 19: ...clude the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRA...

Page 20: ...Airlessco reserves the right to make changes at any time without notice Original Instructions This manual contains English MM 3A4347 GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 U...

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