Komatsu PW160-7H Operation & Maintenance Manual page 216

TROUBLESHOOTING
CHASSIS
Always contact your Komatsu distributor when dealing with
●
these items.
In cases of abnormalities or causes which are not listed
●
below, please contact your Komatsu distributor for repairs.
Problem
Speed of travel, swing, boom, arm,
bucket is slow
Pump generates abnormal noise
(sucking in air)
Excessive rise in hydraulic oil tem-
perature
Bucket rises slowly, does not rise
Does not swing
216
Main causes
Lack of hydraulic oil
●
Clogged element in hydraulic
●
tank strainer, lack of oil
Loose fan belt
●
Dirty oil cooler
●
Lack of hydraulic oil
●
Lack of hydraulic oil
●
Swing lock switch engaged
●
Control lever lock ON
●
Remedy
Add oil to specified level, see
●
CHECK BEFORE STARTING
Clean, see EVERY 2000
●
HOURS SERVICE
Check fan belt tension, replace
●
Clean, see EVERY 500 HOURS
●
SERVICE
Add oil to specified level, see
●
CHECK BEFORE STARTING
Add oil to specified level,
●
CHECK BEFORE STARTING
Release swing lock switch
●
Turn OFF control lever lock
●
switch
PW160-7H VEAM390100
OPERATION