Maintenance
111
Checking the crawler tension
•
The crawler seam (1) is half way between the idler and
sprocket.
•
Check the crawler sag as shown in the figure.
Crawler sag "A"
10-15 mm
•
If the crawler sag is more than 15 mm, adjust the crawler.
•
If necessary, tighten or loosen the crawler.
•
Start the engine and rotate the lifted crawler briefly.
Caution: The area around the rotating crawler must be free of persons. Turn the starter switch to
the STOP position after turning and remove the key.
•
Recheck the crawler tension, readjusting it if necessary.
•
Perform the procedures on the second crawler.
Adjusting the crawler tension
Tightening the crawlers
•
Remove the crawler tensioner cover (1).
•
Position the grease gun on the grease nipple (2).
•
Pump the grease gun until the specified crawler tension is
obtained.
Loosening the crawlers
•
Cautiously unscrew the pressure valve (3) and loosen the crawler.
Grease could squirt out from the cylinder opening.
•
Screw in the pressure valve and torque to 98-108 Nm.
•
Tighten the crawler.