BOOM AND BRAKE SYSTEM HYDRAULIC PUMP REPLACEMENT - CONTINUED
Wipe area clean around all hydraulic connections prior to disconnecting. Cap or plug all openings
after disconnecting. Contamination of hydraulic system could result in equipment failure.
Tag all hydraulic lines and fittings.
Remove nylon straps and remove and discard tiedown straps as necessary to gain free movement
in hydraulic hoses.
Trace supply hose (13) under pump (4) back to hydraulic reservoir. Close ball valve in supply hose at reservoir.
Witness mark check valve and pump to ensure correct installation.
Remove four screws (10), flange (9), pump-to-primary filter hose (11), O-ring (8), and check valve (7) from pump (4).
Under pump (4), loosen two hose clamps (12) and disconnect supply hose (13) from hose connection (16).
Disconnect hose (18) from fitting (19) on underside of pump (4).
If required, loosen eight screws (3) and rotate two hydraulic pump assembly hoses (2) aside.
Use extreme caution when handling heavy parts. Provide adequate support and use assistance
during procedure. Ensure that any lifting device used is in good condition and of suitable load
capacity. Keep clear of heavy parts supported only by lifting device. Failure to follow this warning
may result in death or injury to personnel.
Boom and brake system hydraulic pump weighs approximately 200 lb (91 kg). Lifting device must
have sufficient capacity to lift pump. Failure to follow this warning may result in injury to person-
Wrap a nylon sling around pump (4) and attach sling to a suitable lifting device.
Remove two screws (5) and pump (4) from transmission (6).
Perform steps 8 and 9 to remove fittings from pump, if a new pump is being installed.
On underside of pump (4), remove fitting (19) from flange (1). Remove four screws (20), flange, and O-ring (21) from
pump. Discard O-ring.
On underside of pump (4), remove four screws (14), flange (15), hose connection (16), and O-ring (17) from pump. Dis-