PROBLEM 3
Engine runs, but no hydraulic operation.
POSSIBLE CAUSES
Clutch not engaged; No hydraulic fluid in tank; Blocked charge inlet to pumps; Clogged tank vent;
Drive train damaged from flywheel to pump mount.
CHECKS
Check hydraulic filter service shut-off valve.
Ok
Not Ok
Check clutch engagement.
Open filter service shut-off valve or
replace filters if necessary.
Clutch Engaged
Clutch not Engaged
Engage clutch.
Remove check vent, fluid level, and viscosity. In extreme cold conditions, oil
may not flow freely to pump inlets causing pump cavitation.
Tank Vent, Oil Level, Viscosity Ok
Not Ok
Service hydraulic system.
Make sure all brakes are applied and swing lock (past production) is in place.
Check manual override on two or more pumps. (See Section 2 - Manual
Override Tests.) Does engine load when manual override is applied?
Pump Loads
Pump does not Load
Check electrical input from controller to
pump. (See Section 3 - Checking Electrical
Inputs/Outputs.)
Consult Manitowoc dealer or
Crane Care Lattice Team.
To Next Page
Loading...
