Repair ProConnect Endurance Displacement Pump 334599H For professional use only. Models: 17C487, 17C488, 17C489, 17C721, 17M992, 24Z731, 19Y298 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.
Contents Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 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.
Warnings 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.
Pressure Relief Pressure Relief Pressure Relief Procedure 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. This equipment stays pressurized until pressure is manually relieved.
Pressure Relief 2. Turn the ON/OFF switch to OFF position. Wait 7 seconds for power to dissipate. 6. Turn pressure control to the lowest setting. Disengage trigger lock. ti24852a 3. Unplug power cord or shut engine off. For LineLazer ES 1000, unplug power cord and disconnect battery. ti24854a LineLazer ES 1000 ti24853a 4. Engage the trigger lock. 5. Remove tip guard.
Pressure Relief 7. Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure. 9. Open any fluid drain valves in system. Leave drain valves open until ready to spray again. ti24608a ti24585a 8. Engage the trigger lock.
Pump Removal Pump Removal Pump removal includes disconnecting the fluid inlet and outlet and removing the pump. 1. 4. Disconnect outlet hose and suction hose from pump. Use a hammer to loosen pump retaining nut. ti27251a ti27248a 2. 5. Slide pump out of the drive housing. Turn pump retaining nut to free pump rod cover. ti27252a ti27249a 3. Swing pump rod cover open.
Repair Repair Dissemble Pump 1. 3. Remove packing nut and throat adjustment spacer. Retaining nuts are not removable and not sold separately. Dissemble intake valve. Clean and inspect. O-ring may require a pick for removal. NOTICE If using a pick to remove the O-ring use care to avoid damage to the machined surfaces. Retaining Nuts ti24874a ti24863a 2. Unscrew cylinder from intake valve. 4. Tap piston rod out of cylinder with a hammer or flip over and tap piston rod out against a bench.
Repair 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. ti24876a Do not clean or wipe the piston valve threads.
Repair 8. Remove and discard throat packing and glands from the cylinder. Assemble Pump 1. Soak leather packings in SAE 30W oil for one hour before assembly.
Repair 2. Install ball in piston rod. If thread sealant is applied to piston valve threads, ensure that none gets on the ball. 4. Assemble leather throat packings soaked earlier. Leather Packings ti24893a ti24891a 3. 5. Torque to 27 ± 3 ft-lb (37 ± 4 N•m). Loosely install packing nut with o-ring onto cylinder.
Repair 6. Apply liberal amounts of grease or oil to piston packings. 8. For Model 19Y298 Only: Slide piston assembly (with force) into bottom of sleeve. 9. For Model 19Y298 Only: Grease top inch or two of piston rod that will go through the cylinder throat packings. ti24895a 7. Grease top inch or two of piston rod that will go through the cylinder throat packings. Gently guide displacement rod up through throat packings. Tap bottom of piston valve as necessary with a leather or plastic hammer.
Repair 10. For Model 19Y298 Only: Grease o-rings (231 and 219) and place on sleeve (232). Slide sleeve/piston rod assembly into bottom of cylinder. Replace o-ring (230) if desired. 12. Clean seat thoroughly. Reassemble intake valve with a seat, ball, and new o-ring. Seat may be flipped over and used on other side. ti24898a 11. Grease o-ring and place on outside diameter ring groove. 13. Torque to 100 ± 5 ft-lb (136 ± 7 N•m).
Repair 14. Install o-ring onto packing nut. Torque to 75 ± 5 in-lb (8.5 ± 0.5 N•m) or additional 1/2 turn from hand tight. 15.
Repair Throat Packing Adjustment 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. When pump packings begin to leak after much use, perform Pressure Relief Procedure, page 5 and tighten packing nut down until leakage stops or lessens.
Pump Installation Pump Installation Pump installation includes securing the pump and connecting to the fluid inlet and outlet. 1. Connect outlet hose to pump. ti24087a ti24086a 2. 5. Use both hands to tighten pump retaining nut. Move pump displacement rod up or down until it slides into the connecting rod when the pump is slid into the drive housing. ti24088a 6. ti24085b 3. Use a hammer to turn pump retaining nut an additional 1/8 to 1/6th turn or 45° to 60°.
Parts Parts Models 17C487, 17C488, 17C489, 17C121, 17M992, 24Z731 202 208 203 223 220 224 204 222 221 209 211 207 205 201 212 213 218 225 215 217 229 216 206 219 ti24903a 18 334599H
Parts Parts List Models 17C487, 17C488, 17C489, 17C121, 17M992, 24Z731 Ref. 201 202* 203 204* 205* 206 207* 208* 209* 211* 212 213 215 216 217* 218* 219* Part Description Qty. 24W617 ROD, displacement, 1 includes 212 180656 BUTTON, plug 1 193047 NUT, packing 1 176757 GLAND, female, throat 1 176754 GLAND, male throat 1 24W619 CYLINDER, pump 1 includes 219, 229 105444 BALL, sst, 0.3125 in.
Parts Parts Model 19Y298 20 334599H
Parts Parts List Models 19Y298 Ref. 201 202* 203 204* 205* 206 207* 208* 209* 211* 212 213 215 216 217* 218* 219* Part Description Qty. 19Y268 ROD, displacement, 1 includes 212 180656 BUTTON, plug 1 193047 NUT, packing 1 176757 GLAND, female, throat 1 176754 GLAND, male throat 1 19Y267 CYLINDER, pump 1 includes 219, 229 105444 BALL, sst, 0.3125 in.
Technical Specifications Technical Specifications PC Displacement Pump Maximum fluid working pressure Inlet/Outlet Sizes Fluid inlet size Fluid outlet size Wetted materials on all models 22 US 3300 psi Metric 228 bar, 22.8 MPa 1.0 in. diameter 1/4 in.
Graco Standard Warranty Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale 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.
Graco Information For the latest information about Graco products, visit www.graco.com. For patent information, see www.graco.com/patents. TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor. 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. Original instructions. This manual contains English.
