HOSE AS 3904707 - Caterpillar

2. Remove seven cap screws (1).3. Remove end cap (2). 4. Remove seal (3) from end cap (2). Check for damage or wear. Replace if necessary. 5. Place the steer valve on end so internal components will not fall out.6. Remove geroter housing (4). Lift the housing straight up. 7. Remove seal (5) from geroter housing (4). Check for wear or damage. Replace if necessary. 8. Remove geroter (6), spacer (7), drive (8) (not shown) and spacer plate (9) as a unit.
(2) End cap. (3) Seal. (4) Geroter housing. (5) Seal. (6) Geroter. (7) Spacer. (8) Drive. (9) Spacer plate.9. Components of the geroter 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 (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. (15) O-ring seat. (16) Bearing races. (17) Needle thrust bearing. (11) Spool and sleeve assembly.13. Components of the geroter 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. (15) O-ring seat. (16) Two bearing races. (17) Needle thrust bearing. (19) Control spool. (20) Control sleeve. (21) Centering spring kit. (18) Pin.17. Components of the geroter 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 ball retainer (30) from the control housing. Remove O-ring seals (31) and (32) from check ball seat (28). Inspect the O-ring seals for wear or damage. Replace if necessary. The following steps are for the assembly of the steer valve.
Be sure all parts of the steer valve are clean and free of dirt and debris. Do not use a cloth or paper towel to dry parts. Lint or other material can get into the hydraulic system and cause damage to components. Replace any parts that have scratches or burrs that could result in leakage.
23. Install check ball retainer (30) in control housing (12). Be sure the retainer is straight and not tilted in the bore. Install check ball (29).24. Put a thin coat of 1U6396 Assembly Compound on O-ring seals (31) and