Komatsu PC45MR-30403, Руководство по эксплуатации и обслуживанию

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Crack in rubber shoe
When the crack between the rubber shoe lugs grows to ap-
proximately 60 mm {2.4 in} , repair it.
NOTICE
If a crack occurs and the steel cords are seen, repair it im-
mediately, even if it is small and short.
A crack max. 30 mm {max. 1.2 in} in length and max. 10 mm
{max. 0.4 in} in depth does not need to be repaired.
For judgment of replacement, repair, and continuation of use of the rubber shoe, consult your Komatsu distribu-
tor.
METHOD FOR CHECKING AND ADJUSTING RUBBER SHOES TRACK TENSION
• Wear of the rubber shoe depends on the working condition and type of soil. Accordingly, check the wear
and track tension occasionally. For performing the inspection and adjustment of the track shoes, place the
machine on a level and firm ground.
• When the machine is new or a new part is installed, the track becomes loose for 5 to 30 hours after the
tension is set to the specified value while the machine travels repeatedly. If you adjust the track tension at
short intervals until the initial loosening is finished, “coming off of the track caused by insufficient track ten-
sion” is prevented.
• Working with the track loosened can cause coming off of the track and rapid wear of the core metal.
METHOD FOR CHECKING RUBBER SHOES 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 wooden block (3) which reaches from idler (1) to
carrier roller (2) on the track.
3.
Measure maximum deflection (a) between the under sur-
face of the wooden bar and top surface of the track.
If deflection (a) is in the standard range (1 to 3 mm {0.039
to 0.118 in} ), the track tension is correct.
If the deflection is out of the standard range, adjust it into the standard range.
MAINTENANCE MAINTENANCE PROCEDURE
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