STEERING VALVE Caterpillar

1. Remove the steering wheel nut (1), steering wheel and steering wheel column, if applicable.

2. Remove the dirt seal (2) over the end of the Hydraguide unit upper cover, if applicable. Discard this part.

3. Remove the retaining ring (3), do not discard, this part must be reinstalled during assembly procedure.

4. Remove the seal package parts (4) (5) from the Hydraguide unit by one of the following methods:

a) If the Hydraguide unit has not been removed from the vehicle, rotate the Hydraguide unit input shaft either clockwise or counter clockwise to pressurize the system and force the seal package out. Discard these parts.

b) If the Hydraguide unit has been removed from the vehicle plug three of the four ports in the Hydraguide unit and pressurize the other port with air pressure to force the seal package out. Discard these parts.

5.

NOTE: Clean the Hydraguide unit input shaft and upper cover (7) seal bore to remove particles of dirt, felt, lint, etc. with a clean, lint-free rag. Caution: excessive particles of felt or lint can cause the new seal package to leak.

6. Cover the end of the Hydraguide unit input shaft with cellophane tape to protect the new seal (5) when it is assembled over the sharp edges of the input shaft.

7. Lubricate and install the new seal (5) with lip side first, onto the Hydraguide unit input shaft.

8. Remove the cellophane tape from the Hydraguide unit input shaft.

9. Assemble the new washer (4), with small end first, onto the Hydraguide unit input shaft and push the new washer and the new seal (5), previously installed, down into the Hydraguide unit upper cover. (A short piece of metal tubing 15/16 minimum I.D. x 1 - 3/16 maximum O.D. or a 7/8 deep well socket may be used to push these parts into place.)

10. Assemble the previously used retaining ring (3) onto the Hydraguide unit input shaft and down into the Hydraguide unit upper cover groove. Be sure the rounded edge of the retaining ring (3) is faced inward.

11. Assemble the new seal (5) onto the Hydraguide unit input shaft and down into the Hydraguide unit upper cover (7) counter bore.

12. Assemble the steering column, if applicable.

13. Assemble the steering wheel and wheel nut, torque the wheel nut to 35 ft. lbs.