PUMP GP-FUEL INJECTION 1487178 - Caterpillar

1. Clamp unit in vise, meter end up. Clamp lightly on edges of mounting area. 2. Remove seven cap screws (1).3. Remove end cap (2).4. Remove seal (3) from end cap. 5. Remove meter (4). Be careful not to drop star.6. Remove seal (5) from meter.7. Remove drive spacer (6). 8. Remove drive (7).9. Remove spacer plate (8).10. Remove seal (9) from housing. 11. Remove housing from vise. Place housing on a clean soft cloth to protect surface finish. Use a thin bladed screwdriver to pry retaining ring (10) from housing. 12. Rotate spool and sleeve until pin is horizontal. Push spool and sleeve assembly forward with your thumbs just far enough to free gland bushing (11) from housing. Remove gland bushing. 13. Remove quad ring seal (12) from seal gland bushing (11).14. Use a thin bladed screwdriver to pry dust seal (13) from seal gland bushing. Do not damage bushing. 15. Remove two bearing races (14) and the needle thrust bearing (15) from spool and sleeve assembly. 16. Remove spool and sleeve assembly (16) from hole end of housing.
Do not bind spool and sleeve in housing. Rotate spool and sleeve assembly slowly when removing from housing.
17. Push pin (17) from spool and sleeve assembly. 18. Push spool (18) partially from control end of sleeve (19), then carefully remove centering springs (20) from spool.19. Push spool (18) back through and out of sleeve (19). Rotate spool (18) slowly when removing from sleeve (19). 20. Remove seal (26) from housing.21. Remove setscrew (21) from housing.22. Screw a 1/8" - 24 machine screw into end of check ball seat (22). Then by pulling on screw, with a pliers, lift seat out of housing.23. Remove two seals (23) from check valve seat.24. Tip housing to remove check ball (24) and check ball retainer (25).Assemble Steering Valve
1. Check all mating surfaces. Replace any parts that have scratches or burrs that could cause leakage. Clean all metal parts in clean solvent. Blow dry with air. Do not wipe dry with cloth or paper towel because lint or other matter can get into the hydraulic system and cause damage. Do not use a coarse grit or try to file or grind these parts.
Do not use excessive lubricant on seals for meter section.
2. Lubricate all seals (with exception of new quad ring seal) with clean petroleum jelly. 3. Use a needle nose pliers to lower check ball retainer (25) into check valve hole of housing. Make sure retainer is straight, not tilted on edge, in housing.4. Install check ball (24) in housing.5. Lubricate seals (23) and install seals on check ball seat (22).6. Lubricate check ball seat and seals thoroughly before installing seat in housing. When installing seat do not twist or damage seals. Install check ball seat in housing, insert open end of seat first. Push check ball seat to bottom of hole.7. Install setscrew (21). Use an Allen wrench to tighten setscrew to 11.3 N m (100 lb in). To prevent interference, make