Raise the lift arms and install an approved lift arm support device. (See Installing Lift Arm Support Device
on Page 10-20-1.)
Stop the engine. Move the hydraulic controls to release the hydraulic pressure.
Raise the seat bar.
Lift and block the rear of the loader. (See LIFTING AND BLOCKING THE LOADER on Page 10-10-1.)
Raise the operator cab. (See Raising The Operator Cab on Page 10-30-1.)
Disconnect the case drain hose (Item 1) [Figure 20-60-4] from the right drive motor.
Drain the hydraulic fluid (using the case drain hose) from the reservoir.
Disconnect the hydraulic pump inlet hose (Item 1) [Figure 20-60-5] from the reservoir and drain as much
fluid from the hose as possible. Reconnect the hose to the reservoir.
Disconnect the inlet hose (Item 1) from the hydraulic pump (Item 2) [Figure 20-60-6].
Disconnect the hydraulic pump outlet tubeline (Item 3) [Figure 20-60-6] from the outlet fitting.
Remove the two mounting bolts (Item 4) [Figure 20-60-6] & (Item 1) [Figure 20-60-7] from the hydraulic pump with a 5/16 inch allen wrench.
NOTE: The allen wrench will need to be modified for the procedure.
Installation: Tighten the mounting bolts to 27-37 ft.-lbs.
(37-50 Nm) torque.
Remove the hydraulic pump from the hydrostatic pump.
Remove the coupler (Item 1) [Figure 20-60-8] from the hydraulic pump shaft.
Remove the large O-ring (Item 2) [Figure 20-60-8].
Installation: Use a new O-ring when installing the hydraulic pump.
