PLUG-HEX-SEM 5188189 - Caterpillar

2. Remove seven cap screws (1).3. Remove end cap (2). 4. Remove O-ring seal (3) from end cap (2). Check the O-ring seal for damage or wear and replace if necessary.5. Place the metering pump (steering) on end so internal components will not fall out. 6. Remove gerotor housing (4). Lift the housing straight up. 7. Remove O-ring seal (5) from gerotor housing (4). Check the O-ring seal for wear or damage and replace if necessary. 8. Remove gerotor (6), spacer (7), drive (8) (not shown) and spacer plate (9) as a unit.
(2) End cap. (3) O-ring seal. (4) Gerotor housing. (5) O-ring seal. (6) Gerotor. (7) Spacer. (8) Drive. (9) Spacer plate.9. Components of the gerotor assembly shown in above photo. Gerotor housing (4) and Gerotor (6) are not serviced separately. 10. Remove seal (10). Check for wear or damage. Replace if necessary.11. Remove spool and sleeve assembly (11) from control housing (12). 12. Remove backup ring (13), O-ring seal (14), O-ring seat (15) (not shown), two bearing races (16) and needle thrust bearing (17) from spool and sleeve assembly (11).
(13) Backup ring. (14) O-ring seal. (15) O-ring seat. (16) Bearing races. (17) Needle thrust bearing. (11) Spool and sleeve assembly.13. Components of the gerotor assembly shown in above photo. 14. Remove pin (18) from spool and sleeve assembly (11) (slip fit).15. Separate control spool (19) and control sleeve (20). 16. Remove centering spring kit (21) from control spool (19). Spring kit (21) has four centering springs.
(13) Backup ring. (14) O-ring seal. (15) O-ring seat. (16) Two bearing races. (17) Needle thrust bearing. (18) Pin. (19) Control spool. (20) Control sleeve. (21) Centering spring kit.17. Components of the gerotor assembly shown in above photo. 18. Remove retaining ring (22) and gland bushing (23) from the control housing.19. Disassemble gland bushing (23). Remove dust seal (24) from seal gland bushing (25). Turn the seal gland bushing over and remove quad ring seal (26). 20. Remove set screw (27) from control housing (12).21. Install an 1/8"- 24 machine screw into the end of the check ball seat (28). Remove the check ball seat with pliers.
O-ring seals (31) and (32) are different sizes. Note their location on the check ball seat prior to removal. Do not mix when reinstalled.
22. Remove check ball (29) and check