Galeo PC78MR-6, Руководство по эксплуатации и техническому обслуживанию

Страница: 226 / 295

.
MAINTENANCE
MAINTENANCE PROCEDURE
CHECK AND ADJUST RUBBER SHOE TENSION
(Machine equipped with rubber shoes)
The wear of the rubber shoe will vary with the work conditions and type of soil, so inspect the wear and track tension
whenever necessary. Stop the machine on firm, horizontal ground when carrying out the inspection and
maintenance.
In particular, on new machines or after new tracks have been installed and the tension has been set to the specified
value, the track tension will become loose in the first 5 to 30 hours when the machine has been used for a certain
amount of repeated travel. If the track tension is adjusted frequently until the initial loosening no longer occurs, this
will prevent the shoes from coming off due to insufficient track tension.
If operations are carried out when the rubber shoe is loose, the track will come off and it will cause premature wear
of the core.
Checking
1. Run the engine at low idle, move the machine forward a
distance equal to the length of track on ground, then stop the
machine.
2. Choose wooden block (3) that will reach from idler (1) to carrier
roller (2), then place it on top of the track.
3. Measure the maximum deflection between the top surface of
the rubber shoe and the bottom surface of the wooden block.
Standard deflection
Deflection "a" should be 1 to 3 mm (0.039 to 0.118 in).
If the track tension is not at the standard value, adjust it in the following manner.
Adjustment
WARNING
There is danger of the plug (4) flying out under the high internal pressure
of the grease. When loosening plug (4), never loosen it more than one turn.
Never loosen any part other than plug (4). Never put your face in line with
the mount of plug (4).
If the Rubber shoe tension is not relieved by this procedure, please contact
your Komatsu distributor.
Increasing Track Tension
NOTICE
The standard value is low, so be careful not to tighten the rubber shoe too much.
4 - 31