Maintenance
Safety, Operation and Maintenance Manual - Aug 2012
5-41
SY115C9/135C/155H Crawler Hydraulic Excavator
5.8.2.3 Track shoe bolts - inspect/tighten
If your machine is operated with loose track
shoe bolts (1), the bolts can break. Tighten
any loose bolts immediately.
Always prepare your machine as required
and lock/tag it out before proceeding.
See
“Preparing the machine” on page 2-58 and
“Lock-out and tag-out” on page 2-60.
Tightening
Three-grouser track shoe
1. Tighten the bolts to torque values of
600N·m - 680N·m (61.2kgf - 69.4kgf or
441Ibft - 500Ibft). Make sure that the nuts
and track shoe are in close contact with
the link mating surface.
2. Inspect and tighten again by 120º
±
10º.
Tightening sequence
Tighten the bolts in the sequence shown in the
right illustration. After tightening, make sure
that the nuts and track shoe are in close con-
tact with the link mating surface.
1
CZ335-1104014
CZ335-1104015
Fig. 5-23
Fig. 5-24