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15-1. Crawler tension
15. Crawler
Adjust the crawler tension by supplying grease to the grease cylinder. Make
adjustment so that the crawler tension will be the same on both sides.
Excessive crawler tension will cause the front roller to lose the clearance, causing
the crawler to come off easily and the machine to break easily. Exercise care.
2mm
15-2. Installation . removal of crawler
When removing the crawler, loosen the M14 bolt (width across flats: 22) on the
grease cylinder, remove the grease, return the front roller to the original position,
lift the crawler that is to be removed above the ground, and then remove the
crawler. Reverse the order of removal when installing the crawler. Refer to the
preceding paragraph for the crawler tension.
15-3. Prevention of crawler tearing loose
Be sure to check that the crawler is not slackened and the crawler tension is
adjusted appropriately before operation.
16. Adjustment of traveling section
Conduct the following work before adjusting the traveling section:
Remove the crawlers on both sides, or place the machine on a stable base to lift
the crawlers on both sides.
Remove the rear cover.
When lifting the machine, be sure to use an appropriate support to
completely secure the machine.
C A U T I O N
CAUTION
1
2
15-4. Greasing the crawler
The seesaw roller fulcrum shaft in the crawler section is provided with a grease
nipple. Supply grease to the nipple every 50 hours. Use Excelite EP2 grease or
equivalent to ISO VG2. (Refer to "Lubrication of friction surface of each part")
50h
M14 bolt
Lower roller Ass’y
Rubber crawler
Grease nipple
Traveling hydraulic motor
Grease cylinder
Support pipe
Upper roller
Cylinder pipe
Small spring
Front roller receiver
Oil seal UE407210
Bearing 6306RS
O-ring P24B
Front roller
Spring stopper
Large spring
Sprocket
Crawler adjuster
