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XE210C Hydraulic Excavator
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Adjust the sag of crawler.
a)
Points for attention for adjusting the crawler sag
1)
If the crawler sag is not within the desired range, loosen or tighten the crawler as per the steps below.
2)
During the adjustment of crawler sag, fall the bucket to ground, and jack the crawler on one side.
Apply the same methods to the crawler on the other side. Place the cushion block under the frame
every time to support the machine.
3)
After adjusting the crawler sag on both sides, move the machine forward and backward several times.
Check the sag of crawler again. If the crawler sag can't reach the specified value, continue to adjust it
4)
until it's satisfactory.
b)
Loosen the crawler.
Note:
Don't loosen the valve body rapidly or
1)
Excessively, otherwise the grease in the tensioner
will spray. Loosen the valve body carefully, and
don't make the body and face against it.
Don't loosen the grease coupler.
2)
Important: if the crushed stones or soils are clipped
between the driving wheel and crawler, remove
them after loosening the crawler.
1)
In case of loosening the crawler, rotate the valve body slowly anticlockwise with a deep socket
wrench, and the grease will drain out of its outlet.
2)
Rotate the valve body by 1 to 1.5 circles enough to loosen the crawler.
If the grease can't be smoothly drained, lift the crawler away from the ground, and rotate the crawler
3)
slowly.
4)
After reaching the proper crawler sag, tighten the valve body clockwise.
c)
Tighten the crawler.
Note: if the crawler is still too tight after tightening the valve body anticlockwise, or it is still loose
after applying the grease into the grease coupler, this is abnormal. At this time, don't try to remove
the crawler or track-tension device, because the high-pressure grease of track-tension device is
dangerous. Therefore, overhaul it or contact with your assigned dealer.
If it's necessary to tighten the crawler, connect the grease gun to grease coupler, add in the grease
until the crawler sag reaches the specified value.
Check of air conditioner
Oil leaks
Fig.2-55
1－Liquid reservoir 2－Interface
a)
Check the air conditioner every day.
b)
Check the cooling gas at the connections of pipe for leaks (as shown in above figure). If the oil leaks
Operating and Maintenance Manual 126
1－Valve body
Deflection
Fan belt pulley
Press
Press
Crankshaft belt pulley
Fig.2-56
Grease outlet
Fig.2-54
2－Grease coupler
Generator belt pulley
Compressor belt pulley
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