Diagnose Hoist Boom Function

Symptom Problem Solution

Hoist cylinder will not operate

Loose connections or leaks.

Repair. Tighten fittings or replace hoses.

Pilot oil is not available at hoist pilot valve (joystick).

Repair pilot system.

Pilot oil is not available at the control valve.

Repair/replace joystick pilot valve.

Main and port relief valves malfunctioning or incorrectly adjusted.

Adjust, repair, replace valves.

Seized spool in control valve.

Repair/replace valve.

Worn or damaged seals in cylinders.

Repair/replace cylinders or seals.

MR64971,00000BE -19-05DEC01-1/1