Elliott Digger Derrick, Operation & Maintenance Manual, Page: 221 / 376

Troubleshooting EEC-0023 V1.1
Troubleshooting
OUTRIGGER/STABILIZER CREEPS IN UNDER LOAD
Clean holding valve and check relief setting. Replace as required.
OIL CONTAMINATION PROBLEMS

Water in oil ( milky )

Filter plugged ( dirty )

Metal particles ( mechanical failure )

Oil discolored or has burned odor ( overheating )

Oil foaming due to low oil, water in oil, air leak in suction, kinked hose or worn pump
shaft seal
PUMPING PROBLEMS

Suction line plugged- clean and check

Ball valve closed-open valve

Air leak in pump suction-replace suction line

Dirt in pump-flush system & rebuild pump

Worn pump-repair or replace

Relief valves not properly adjusted-check and adjust valves

Dirty or collapsing hoses- replace

Worn cylinders or motors- rebuild/replace
SYSTEM OPERATES SLOWLY OR ERRATICALLY

Air in system-check suction line for leaks and oil level in tank

Cold oil-run system and make sure oil is warm

Pump damaged-repair

Dirt in relief valve-clean/replace

Restriction in suction line-clean and replace

Ball valve closed-open valve

Oil viscosity too high-replace with proper oil

Low oil supply

Valve plugged-clean valve orifices

Oil leak-tighten fitting/replace hoses as required