2-87
17-4-2. Machine body
• Contact your dealer for assistance, regarding the mea-
sures indicated in parentheses in the list below.
• If any abnormalities or troubles are encountered that are
not included among those shown below, ask your dealer
for assistance.
Trouble Cause Measure
Machine
body
Power or speed of moving
part is low.
• Deteriorated function caused by worn
hydraulic pump
• Pressures at system relief valve or
circuit relief valve of control valve
have dropped below set values
• Damaged hydraulic cylinder
• Insufficient amount of hydraulic oil
• Clogged filter
(• Replace hydraulic pump.)
(• Check and repair valves.)
(• Check and repair.)
• Replenish hydraulic oil up to specified
level.
• Clean or replace filter.
upper structure does not
swing or does not swing
smoothly.
• Insufficient amount of grease
• Defective swing brake valve
• Defective swing motor
• Swing brake has not released
• Check and grease.
(• Check and repair.)
(• Check and repair.)
(• Check and repair.)
Temperature of hydraulic
oil is too high.
• Insufficient amount of hydraulic oil
•Overload
• Replenish hydraulic oil up to specified
level.
• Lower load.
Machine does not move
straight.
• Improperly adjusted crawler or
trapped foreign material
• Damaged hydraulic motor
• Defective hydraulic pump
• Defective control valve
• Damaged sprocket, idler or track roll-
er
• Adjust or clean.
(• Check and repair.)
(• Check and repair.)
(• Check and repair.)
(• Check and repair.)
Track gauge change does
not operate.
• Clogging with mud or frozen water
deposit.
• Defective track gauge change cylin-
der.
• Clean and rinse mud.
(• Check and service.)
Track gauge change does
not operate smoothly, or
there is too much play.
• Peeling of track gauge change pipe or
clogged pipe with mud
• Damaged or deformed track gauge
change stopper bolt
• Deformed track gauge change part
• Repair peeling or clean mud off.
(• Check and repair track gauge
change stopper bolt.)
(• Check and repair track frame.)
Courtesy of Machine.Market
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