Maintenance
140
Adjusting the crawler tension
Tightening the crawlers
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Position the grease gun (2) on the grease nipple (1).
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Pump the grease gun until the specified crawler tension is ob-
tained.
Loosening the crawlers
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Cautiously unscrew the pressure valve and loosen the crawler.
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Screw in the pressure valve and torque to 100-110 Nm.
!
Tighten the crawler.
Replace the drive unit oil
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Park the excavator on level ground so that the drain plug (figure below, position 2) is positioned at the bottom.
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Place a catch tray with a minimum capacity of 2 L under the drain plug.
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Remove the drain plug and let the oil drain completely. Install
the drain plug with a new sealing ring on it.
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Unscrew the filler plug (1).
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Fill oil as specified in the "Recommended lubricants" section
(page 146). The oil level is the lower edge of the thread.
Capacities:
0.33 L
!
Provide filler plug with new oil ring and screw in.
!
Perform the same service on the second drive unit.
Grease could squirt out from the cylinder opening.
Only change the oil when the drive unit is warm to the hand; if not, drive the excavator warm.
STOP
