Types And Causes Of Ordinary Troubles - Hyundai R290LC-9 FC Manual

R290LC-9 FC

5. Types and Causes of Ordinary Troubles

Failure Type
Temperature of operating oil fails to reach normal level.
RPM of the engine is too low.
Flow of operating oil is low.
There is an obstacle on the hydraulic line.
The cooling system, pump control system or pilot line is damaged.
Poor hydraulic
Oil is leaking internally (control block, valve, power unit, etc.).
performance
The hydraulic hose is entangled or twisted.
The spool of the control valve is not opened maximally.
The relief valve is damaged or cannot be adjusted.
Internal oil leak occurs due to aging of the cylinder.
The hydraulic pump is damaged.
The cylinder rod is bent.
The piston is jammed.
The cylinder tube has partially increased inner diameter or flaw.
Air exists in the hydraulic line.
Poor equipment
Temperature of operating oil is too low.
power
The valve spool is jammed or the spring is broken.
The pump or engine control system is damaged.
The power control valve is damaged.
Engine oil is insufficient or improper lubricant is used.
The bearing is damaged.
Generation of
The gear tooth of the turning reducer is worn and broken.
abnormal noise
The gear tooth of the driving reducer is worn and broken.
Cause of Failure
25