1.117 HYDRAULICS Autohitch cylinder (58) Removal 1. Stop the engine and chock the machine, apply the parking brake . 2. Refer to page 1.1 and dump hydraulic pressure then disconnect the battery. 3. Disconnect the autohitch release cable. 4. Identify the hydraulic hoses to make sure they are reconnected correctly. Disconnect the two hydraulic hoses from the right side of the assembly, blank the cylinder connections and open hoses. The autohitch assembly weighs 300 kg (660 lb). Take care when handling assembly to avoid damage to components and injury to personnel. 5. Support the autohitch assembly and remove the bolts and washers securing assembly to rear service plate.
Slide assembly off the locating spigots and remove from machine. 1. Release cable 2. Hydraulic hose 3. Hydraulic hose 4. Attachment bolts 5. Autohitch assembly 6. Attachment pin 7. Release lever 8. Lower hook 9. Attachment pin 6. Remove the split pin and washer securing the cylinder upper attachment pin (6) and remove pin. Manually operate the release lever (7) and slide the lower hook (8), complete with cylinder, out of the autohitch assembly. Remove the roll pin securing the lower attachment pin (9) to the lower hook and drive out the pin. Remove the cylinder from the lower hook. 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. 3. Purge the hydraulic system by starting the engine and operating the autohitch service to fully extend and retract cylinder several times. 4. Refer to Page 1.66 and check the hydraulic level and replenish if necessary. Dismantling 1. Clean the exterior of the cylinder with a suitable solvent and dry with compressed air. Do not use cloths or paper towels to dry component.