Komatsu PC130-7, Руководство по ремонту

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20-120
PC130-7
TESTING AND ADJUSTING
TESTING AND ADJUSTING
TRACK SHOE TENSION
TESTING
1. Running the engine at low idling, move the
machine forward by the length of track on ground
and stop slowly.
2. Place straight bar [1] on the track shoe between
the idler and the 1st carrier roller.
a
As straight bar [1], use an L-shape steel, etc.
which will be deflected less.
3. Measure maximum clearance (a) between
straight bar [1] and track shoe.
•
Standard maximum clearance (a):
10 – 30 mm
ADJUSTING
a
If the track shoe tension is out of the standard
range, adjust it according to the following proce-
dure.
1. When tension is too high
1) Loosen valve (1) gradually to discharge the
grease.
k
Since the valve may jump out because
of the high-pressure grease in it, do not
loosen it more than 1 turn.
a
If the grease is not discharged well, drive
the machine forward and in reverse
slowly.
2) Tighten valve (1).
3
Valve: 58.8 – 88.2 Nm {6 – 9 kgm}
3) After finishing adjustment, check again that
the track shoe tension is normal according to
the above described procedure.
2. When tension is low
1) Add grease through valve (2).
a
If the track shoe is not tensed well, drive
the machine forward and in reverse
slowly.
2) After finishing adjustment, check again that
the track shoe tension is normal according to
the above described procedure.
TESTING AND ADJUSTING TRACK SHOE TENSION
(1)