Trouble Shooting; Trouble And Remedy - IHI 15VX Operation Manual

4
Detect the occurrence of anything unusual in its early stages by well getting hold of the normal
performance and condition of the machine while at daily operation.
When detecting anything unusual, investigate the cause, and make the repair.
When keeping the operation continue by neglecting anything unusual, it is in danger of relating
with further big trouble.
SYMPTOM
• Lack of lubricating lever working part.
Operating lever
• Poor control valve
is felt hard or
does not returm
automatically.
• Lack of hydraulic oil
All movements
• Hydraulic oil is not yet warm.
are impossible
• Decreasing of engine output horse
or lack vigour
power
• Poor pump or coupling
• Hydraulic oil is not proper
• Lowering of pressure setting of relief
valve
• Poor control valve
• Clogging foreign material such as stone
Travel of left,
• Poor control valve
right, or both
sides are
• Malfunction of traction motor or
impossible.
reduction unit
• Poor brake valve
• Clogging foreign material
Unable to travel
• Poor adjustment of shoes belt tension
straight
• Poor pump
• Poor motor or brake valve
• Poor control valve
• Lack of lubricating swing bearing
Swing is
• Poor cushion valve
impossible or
smooth swing
• Poor brake valve
is impossible.
• Poor motor
• Lack of hydraulic oil
Lack of digging
• Hydraulic oil is not yet warm
force
• Hydraulic oil is not proper
• Decreasing of engine output horse
power.
• Poor pump
• Lowering of pressure setting of relief
valve
• Poor hydraulic cylinder
• Poor control valve

TROUBLE SHOOTING

4-1 TROUBLE AND REMEDY

PROBABLE CAUSE
4 – 1
REMEDY
• Lubricate
• Request repair to distributor for service
and repair.
• Fill to regular level.
• Perform arm-up operation.
• Clean air cleaner and inspect fuel system.
• Request repair to distributor for service and
repair.
• Replace with recommended hydraulic oil.
• Request repair to distributor for service and
repair.
• As above
• Exclude foreign material.
• Request repair to distributor for service and
repair.
• As above
• As above
• Exclude foreign material.
• Adjust to regular dimension on both sides.
• Request repair to distributor for service and
repair.
• As above
• As above
• Lubricate
• Request repair to distributor for service and
repair.
• As above
• As above
• Fill to regular level.
• Perform warm-up operation
• Replace with recommended hydraulic oil.
• Clean air cleaner and inspect fuel system
• Request repair to distributor for service and
repair.
• As above
• As above
• As above