Komatsu PC20R-8 User Manual

MAINTENANCE PLAN
138
4.7.1.c CHECKING THE ELECTRICAL SYSTEM
4.7.1.d CHECKING THE STEEL TRACK TENSION
CHECK (for PC20R only)
CHECK (for PC27R only)
DANGER
• If the fuses are corroded, oxidized or not perfectly held in their seat, replace them only with fuses hav-
ing the same capacity; before changing a fuse, make sure that the ignition key is in position «».
• If there are signs of short circuit on the cables, find out the cause and repair them; always contact your
Komatsu Utility Dealer for the troubleshooting.
Make sure that there are no disconnected cables or signs of short circuit in the electrical system.
Make sure that all the cables are well tightened in the relevant terminals; tighten any loose cables.
In particular, check:
1. Battery
2. Starter
3. Alternator
DANGER
• This operation must be carried out by two operators. One operator must be seated in the cab and oper-
ate the machine according to the instructions of the operator who carries out the check and the adjust-
ment.
• The track tension must be checked with the frame lifted from the ground; be careful not to move any
control lever while the operator is carrying out the check.
Stop the machine on a firm and level surface and lower the
equipment to the ground.
1 - Raise each track by means of boom and arm.
Operate the control levers slowly during this operation.
2 - Measure the distance between the track and the second roll-
er, starting from the sprocket. If the distance is included be-
tween 10 and 30 mm, the tension is normal.
If the value is not included in this interval, adjust the track un-
til reaching the correct value.
RWA06380
Stop the machine on a firm and level surface and lower the
equipment to the ground.
1 - Raise each track by means of boom and arm.
Operate the control levers slowly during this operation.
2 - Measure the distance between the track and the third roller,
starting from the sprocket. If the distance is included between
10 and 30 mm, the tension is normal.
If the value is not included in this interval, adjust the track un-
til reaching the correct value.
10÷30 mm
RWA09310

Komatsu PC20R-8 Specifications

General

Brand	Komatsu
Model	PC20R-8
Category	Excavators
Language	English