SUPPORT AS 3746154 - Caterpillar

Removal Procedure
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Open the right side access door.
Illustration 1 g06260283
Disconnect the harness assembly for light assembly (1).
Remove eight bolts (2) and access panel (3).
Illustration 2 g06260296
Illustration 3 g06260306
Components removed for photographic purposes
Cut the cable straps that secure harness assembly (9) to piston pump (auxiliary) (4).
Disconnect harness assembly (9) from piston pump (auxiliary) (4).
Remove the bolts, the washers, the clamps, and disconnect hose assembly (7) from piston pump (auxiliary) (4).
Disconnect hose assembly (6), hose assembly (8), hose assembly (10), and hose assembly (11) from piston pump (auxiliary) (4).
Attach a suitable lifting device to piston pump (auxiliary) (4). The weight of piston pump (auxiliary) (4) is approximately 34 kg (75 lb).
Remove two bolts (5) (not shown), the washers, piston pump (auxiliary) (4), and the O-ring seal.Installation Procedure
Install piston pump (auxiliary) (4) in the reverse order of removal.