EKKO EK20R Service Manual page 8

The spill
Abnormal sound
(1) Common faults of lifting system and troubleshooting methods
fault
Lifting, falling is not
smooth, loud noise
Other steering when relative surface bite
dead
The steel ball in the steering valve body
fails and is blocked
Steering gear reset failure, spring
breakage
Leakage in steering cylinder is too large
There is air in the steering system
hydraulic line element
Working oil level is too low, inhale air
The shunt valve hole is blocked and the
spool is stuck
Steering cylinder piston rod bent
The joint was not pried tight
There are dirty joints between stator and
rear cover of valve body of steering gear
Cylinder leakage
Low oil level, hydraulic noise
Suction tank or oil filter blocked
cause
The gap between the upper side roller of
the outer frame and the channel steel of
the inner frame is over 1mm
The gap between the lower side roller of
the outer frame and the channel steel of
the inner frame is over 1mm
The gap between the side roller of the
fork frame and the channel steel of the
inner door frame is over 1mm
The side roller shaft fastening bolt is
loose
There are broken objects in the channel
steel of sliding frame and inner door
frame
swing from side to side
Dismantle, repair
Replacement spring
Check piston seal ring and replace
Adjust pressure and flow
Use specified oil
replace
replace
exhaust
Pry tight
cleaning
Check guide sleeve seal joint seal
Refueling and exhaust
Cleaning and replacement
Reduce adjusting gasket
Add adjusting gasket
Reduce adjusting gasket
fastening
Yeah, oil on the tracks regularly
6
maintenance