Instructions Displacement Pump 311845C - For portable spray application of architectural paints and coatings - Model 288466, 288467, 288468, 288819 3300 psi (22.8 MPa, 25 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. Model 288466 Model 288467/288468 Model 288819 Ti8844a Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2007, Graco Inc. is registered to I.S.
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 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 EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury.
Service Service Pressure Relief Procedure The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. To reduce the risk of an injury from accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you, • • • • Tools Needed • • • • • • Vise 12-inch adjustable, open-end wrench (2) Hammer, 20 oz.
Repair Repair See your sprayer instruction manual for complete instructions for removing and installing the pump in your sprayer. 3. (Fig. 3) Disassemble intake valve. Clean and inspect o-ring (17). You may need to use a pick to remove o-ring. Spring (26) for model 288819 is optional and is not included with the pump. Disassembly 1. (Fig. 1) Remove packing nut (3). 3 26 (288467/288468) 18 26 (288819) 19 16 17 1 ti8845a FIG. 1 ti8847b 2. (Fig. 2) Unscrew intake valve from cylinder. FIG. 3 4.
Repair 7. (Fig. 7) Remove packing and glands from piston rod. Note orientation for installation. 11 Do not clean or wipe piston valve (6) threads. Cleaning the piston valve threads could destroy the special sealing patch and cause the piston valve to come loose during operation. 6 5 6. (Fig. 6) Unscrew piston valve (6) from piston rod (5). Clean and inspect parts. The piston has a special thread locking/sealing patch. Do not remove the patch.
Repair Reassembly 5. (Fig 10) Install ball (11) in piston rod (5). If Loctite® is applied to piston valve threads, ensure that none gets on ball. Note: For steps 1-4 refer to Fig. 9. 1. Stack male gland (7) on piston rod (5). 11 2. Alternately stack blue UHMWPE (8) and brown UHMWPH (9) (288466, 288467, 2884680) or leather (288819) packings on piston rod. Note orientation. 3. Install female gland (10). 4. Install backup washer (13) and piston wiper (12) on piston valve (6). Note orientation.
Repair 7. Soak all leather packings in SAE 30W oil for 1 hour minimum prior to assembly. Note: For steps 8-10 refer to Fig. 12. 8. Place male gland (20) in cylinder. 9. Alternately stack UHMWPE (21) and leather packings (22). Note orientation. 10. Place female gland (23) in top of cylinder. Seat packings. 12. (Fig. 14) Install o-rings (14) inside cylinder (2) and on sleeve (4). Slide sleeve (4) into bottom of cylinder (2). Replace o-ring (15) if desired.
Repair 14. (Fig. 16) Reassembly intake valve with new o-ring (17), seat (16) and ball (19). Seat may be flipped over and used on the other side. Clean seat thoroughly. Spring (26) for model 288819 is optional and is not included with the pump. 18 19 16. Torque packing nut to: 140 +/- 10 in-lb (15 +/- 1 N•m) 288467/288468, 288819. 125 +/- 10 in-lb (14 +/- 1 N•m) 288466 When pump packings begin to leak, tighten packing nut down until leakage stops or lessens.
Parts Parts Model 288467/288468 Ref 1 2 11 3 4 12 13 5 6 24 6 7* 8* 9* 10* 11* 12* 13* 14* 15* 16† 17†* 18 19†* 20* 21* 23* 24* 25* 26* 3 25 23 2 8 21 15 14 20 4 5 14 26 18 7 9 Part 15E655 288482 288483 15J792 249121 287817 288469 288470 249177 189585 189588 107203 119636 15J800 108822 107306 240918 107098 198505 107167 15G658 15G657 112590 108832 245256 Description Qty HOUSING 1 CYLINDER (model 288467) 1 CYLINDER (model 288468) NUT, packing 1 SLEEVE, cylinder (model 288467) 1 SLEEVE, cylin
Parts Model 288466 24 3 5 25 10 7 8 22 8 9 7 10 12 13 5 11 6 Ref 1 2 3 4 5 6 7* 8* 9* 10* 11* 12* 13* 14* 15* 16† 17† 18 19†* 22* 24* 25* Part 195894 288727 193032 248210 288479 240150 183178 183185 101947 118504 15C998 107098 106556 244199 108526 193027 102972 183171 120818 Description HOUSING, intake CYLINDER NUT, packing SLEEVE, cylinder ROD, piston VALVE, piston GLAND, packing, male PACKING (blue) PACKING,VEE (brown) GLAND, packing, female BALL, bearing WIPER, piston WASHER, backup PACKING,
Parts Model 288819 24 12 13 11 3 6 Ref 1 2 3 4 5 6 7* 8* 9* 10* 11* 12* 13* 14* 15* 16† 17†* 18 19†* 20* 23 24* 25* 26† 25 23 2 9 8 20 15 14 4 5 Part 15A303 288822 15J792 248979 288821 249177 189585 189588 118601 119636 15F183 108822 107306 245885 107098 15D158 118602 198768 194175 112590 108832 118600 Description HOUSING, intake CYLINDER, pump NUT, packing SLEEVE, cylinder ROD, piston VALVE, piston GLAND, packing, male PACKING, vee, blue PACKING, vee, leather GLAND, packing, female BALL, ceramic
Parts Notes 12 311845C
Technical Data Technical Data Maximum working pressure Fluid inlet size Fluid outlet size Wetted parts 311845C 3300 psi, 25 bar, 22.
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.