1.68 HYDRAULICS HYDRAULIC PUMP (LS) (2) Removal 4. Refer to Page 1.66 and replenish the hydraulic tank before the engine is started. NOTE: The hydraulic pump (LS) is located in the engine compartment, attached to the gearbox. Remove components as necessary to get access to the pump. 5. Purge the hydraulic system by starting the engine and operating all services to fully extend and retract cylinders several times. Refer to page 1.66, check the hydraulic level and replenish if necessary. 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.
Make sure the pump is free from dirt to avoid contamination of the hydraulic system. 4. Remove the LS hose (3) from the LS compensator (2). 5. Remove the case drain hose (4) from the main body of the pump (1). 6. Remove the four cap screws (6) and washers from the pump inlet hose (5) and remove hose from pump. 7. Remove the four cap screws (8) and washers from the two half-clamps (9) on the pump outlet hose (7) and remove the half-clamps and hose from pump. 1. LS hydraulic pump 2. LS compensator 3. LS hose 4. Case drain hose 5. Inlet hose 6. Cap screw 7. Outlet hose 8. Cap screw 9. Half-clamp 10. Bolt 11. Gearbox 8.
Remove the two attachment bolts (10) and washers securing pump to gearbox (11) and remove pump. 9. Fit blanks to all openings on the pump and hoses to prevent the ingress of dirt. Installation 1. Installation is the reverse of removal. When fitting a new LS hydraulic pump, it is vital that the case of the pump is filled with oil before the pump is fitted. 2. Fill the pump with 0.25 litre (0.44 pt) of oil, through the case drain connection on the pump. 3. Use new O-rings when assembling the inlet and outlet hoses, lightly lubricated with clean hydraulic oil. Use new washers on the cap screws when assembling the inlet and outlet hoses.