1.113 HYDRAULICS Compensator cylinder (53) 3. Purge the hydraulic system by starting the engine and operating the service to fully extend and retract cylinder several times. Removal 1. Raise the boom to a suitable height and support using lifting equipment or support stands. 4. Refer to page 1.66 and check the hydraulic level and replenish if necessary. 2. Stop the engine and chock the machine, apply the parking brake . 3. Refer to page 1.1 and dump hydraulic pressure then disconnect the battery. The compensator cylinder weighs 30 kg (66 lb). Take care when handling, to avoid damage to components and injury to personnel. NOTE:
On early models, the upper and lower attachment pins are slotted and retained by a locking plate. 4. Support the upper end of the cylinder (1). Remove the bolt (2) and washer (3) retaining the upper attachment pin (4). Drive out the upper attachment pin and lower the cylinder onto the lift cylinder, if fitted, or a suitable support. 5. Identify the hydraulic hoses to make sure they are reconnected correctly. Disconnect the two hydraulic hoses (5) from the cylinder (1), blank the cylinder and open hoses. NOTE: Make a note of the orientation of the spigot mounting brackets, the sloping side must face the front of the machine. 6.
Support the cylinder and remove the four spigot mounting bolts (6) and washers (7) securing lower cylinder to the chassis (8). Remove cylinder from machine complete with spigot mounting brackets (13). 1. Cylinder (53) 2. Bolt 3. Washer 4. Upper attachment pin 5. Hydraulic hoses 6. Bolt (4 off) 7. Washer (4 off) 8. Chassis 9. Nut (2 off) 10. Washer (2 off) 11. Bolt (2 off) 12. Pivot pin 13. Spigot mounting bracket (2 off) 7. Remove the nut (9), washer (10) and bolt (11) attaching the cylinder lower pivot pin (12) to the two spigot mounting brackets (13). Remove the two spigot mounting brackets and the lower pivot pin (12) from the cylinder. Installation 1.
Installation is the reverse of the above procedure. 2. Refer to page 1.66, check the hydraulic level and replenish tank before engine is started.