MOTOR GP-PISTON 5604745 - Caterpillar

During the following procedure, ensure that you catch all hydraulic fluid and dispose of the fluid properly.
The recommended procedure for flushing the system is as follows:
Shut down the engines.
Replace the hydraulic manifold oil filter.
Illustration 1 g03246797
Reservoir shutoff valves
(1) Pump 2 shutoff valve
(2) Pump 1 shutoff valve
Turn the hydraulic pump shutoff valves to the closed position.
Remove the hydraulic pump lines from the reservoir and place in a container to catch the oil.
Open the reservoir shutoff valves and drain the reservoir into an approved container.
Reconnect the hydraulic pump lines to the reservoir.
Turn the reservoir shutoff valves to the ON position. The on position is such that handles are in line with the hoses.
Fill the reservoir with 10W Cat HYDO Advanced
The following steps may move the boat. Ensure that you have enough room to safely perform this procedure if the boat moves.
Turn on the system.
Using either the thruster control panel or a joystick station, run the system at minimum operating speed. Do so until the system operates properly and all air has been bled from the system. Refill the hydraulic reservoir as necessary.