Service Manual User guide

Supply, Pressure, and Return Hydraulics
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
5-61
3. Remove O-ring (Item 5) and backup ring (Item 4) from cover housing.
4. Remove O-ring (Item 3) near head of power-beyond sleeve.
5. Discard O-rings and backup ring.
6. Clean remaining parts with solvent and dry with compressed air.
Inspect remaining parts for damage, including O-ring on connector.
Replace as necessary.
Note: If the power-beyond sleeve is damaged, it will be necessary to purchase a
new power-beyond assembly which includes the required O-rings and
backup ring.
Assembly, Power-Beyond Sleeve
(Ref. Fig. 5-38) The following steps are required to reassemble the power-
beyond sleeve.
1. Lubricate new O-ring with hydraulic oil and install (Item 3) on power-
beyond sleeve.
2. Lubricate O-ring (Item 5) and backup ring (Item 4) with hydraulic oil.
Install O-ring first, then backup ring in housing orifice.
3. Install power-beyond sleeve on cover housing.
4. Lubricate threaded portion of long connector (Item 1) (including
O-ring) with hydraulic oil and install it on power-beyond sleeve. Torque
to 105–115 ft-lbs