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Graco 287834 Instructions Manual
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Graco 287834 Instructions Manual

Displacement pump
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Instructions
Displacement Pump
- Use with Architectural Coatings, Paints, Roof Coatings
4000 psi (27.6 MPa, 275.8 bar) Maximum Working Pressure
Important Safety Instructions. Read all
warnings and instructions in this manual. Save
these instructions.
Model: 287834
Related Manuals
311279
311283
311484
311254
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001
and Below Grade Coatings -
311485D
ti7629a

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Summary of Contents for Graco 287834

  • Page 1 Important Safety Instructions. Read all warnings and instructions in this manual. Save these instructions. Model: 287834 Related Manuals 311279 311283 311484 311254 ti7629a Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001...
  • Page 2 Warning Warning The following are general warning related to the safe setup, use, grounding, maintenance and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols ap- pearing in the body of the manual refer to these general warnings. When these symbols appear throughout the man- ual, refer back to these pages for a description of the specific hazard.

  • Page 3: Operation

    Operation Operation Pressure Relief Procedure System pressure must be manually relieved to prevent it from starting or spraying accidentally. Fluid under high pressure can be injected into the skin and cause serious injury. To reduce risk of injury from injection, follow this procedure whenever you are instructed to relieve pressure, stop spraying, service equipment or install or clean spray tip.
  • Page 4 Service Service Removal 5. Using a wrench, loosen filter housing fitting (110) and remove housing from pump. 1. Flush pump (36). Stop pump on down stroke if possible. 2. Relieve pressure, page 3. 3. Remove suction set (147) from pump (36). ti7119 6.
  • Page 5 Service 7. Slide cover up (124). 10. Remove pump (36). ti7804a ti1816a 8. Separate coupling (125) and remove. Ball Adjustment 1. Using a hammer, loosen and remove intake valve (213). ti1814a ti7875a 9. Using a hammer, loosen jam nut (122). Unscrew 2.
  • Page 6 Service 3. Select proper ball travel for material sprayed. Reas- 3. Hold piston valve (210) securely in vice. Using a semble as shown. wrench, separate piston valve (210) from rod (222). Longest Ball Travel Shortest Ball Travel (for heavy material) (for light material) ti7880a ti7874a...
  • Page 7 Service Reassembly 4. Carefully slide piston rod assembly (222) into top edge of sleeve (220). 1. Soak all leather packings (237) in SAE 30W oil for at least 1 hour prior to assembly. 2. Alternately stack V-Packings (203) and V-Packings (223).
  • Page 8 Service 6. Grease o-ring (207) and place on sleeve. Slide one 10. Reassemble intake valve (213) as shown. o-ring (207) inside cylinder (205). Slide sleeve/pis- ton rod assembly (222) into bottom of cylinder. ti7873a 11. Place intake valve (213) assembly in vice. Install cylinder (205) assembly to intake valve.
  • Page 9 Service 13. Screw jam nut (122) to bottom of pump threads 16. Slide cover (124) over coupling (125). (36). Screw pump completely up into power head. ti7779a ti7815a 17. Replace clip pin (121) to secure. 14. Hand tighten jam nut (122). Then tighten securely 1/8 to 1/4 turn with hammer or torque to 330 ft-lb (447.4 N•m).
  • Page 10 Service 18. Reinstall filter housing (110). ti7772a 19. Connect suction hose (147) to pump outlet (36). ti7764a 311485D...
  • Page 11 Parts Parts Part No Description Part No Description 15H335 FITTING, nipple, 1 inch NPT 201† 116385 PLUG 217* 15H251 GLAND, female, piston steel 15G198 NUT,packing 15G282 GLAND, male 203* V-PACKING, UHMWPE, blue 15G283 GLAND, female 204* 15H250 GLAND, male, throat, brass 287833 SLEEVE, cylinder 287836 CYLINDER, pump 287832 ROD, piston...

  • Page 12: Warranty

    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.