Komatsu PC360LC-11, Operation & Maintenance Manual

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23. Close engine hood (1).
METHOD FOR CHECKING LOOSENESS AND TIGHTENING TRACK SHOE
BOLTS
NOTICE
If the machine is used with track shoe bolts loose, they will break. If any looseness of the shoe bolt is
found, retighten it.
1.
Check for looseness of the shoe bolt (1).
2.
If any looseness of the bolt is found, tighten it in order
shown in the figure.
Tightening torque: 392 ± 39 Nm {40 ± 4 kgm}
3.
Check that the nut and shoe are in close contact with the
link contact surface.
4.
After checking, tighten a further 120 ± 10 °.
METHOD FOR CHECKING AND ADJUSTING TRACK TENSION
1.
Run the engine at low idle, then move the machine forward
for a distance equal to the track length on ground, and
slowly stop the machine.
2.
Place straight wooden square bar (3) which reaches from
idler (1) to carrier roller (2) on the track.
3.
Measure the maximum deflection (a) between the bottom
surface of the wooden bar and top surface of the track
shoes.
• Standard deflection:
Deflection "a" should be 10 to 30 mm.
If the deflection is out of the standard value range, adjust it into the standard value range.
METHOD FOR INCREASING TRACK TENSION
Items to be prepared
MAINTENANCE MAINTENANCE PROCEDURE
4-25