Komatsu PC138US-11 Operation & Maintenance Manual page 385

Hydraulic excavator
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MAINTENANCE
1.
By using tools, loosen bolt (3) and nut (4) of elbow (2)
above KCCV ventilator (1).
2.
Move loosened bolt (3) and nut (4) along the groove of el-
bow (2) to position (A) shown in the figure.
3.
By using the filter wrench, loosen cover (7) of KCCV venti-
lator (1).
At this time, tube (5) and hose (6) rotate together with cov-
er (7).
WENAM00111
MAINTENANCE PROCEDURE
4-69

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