90
Checking
Open left side gate of machine.
Check the tension (Approximately 98N) based
on the centers of fan pulley (1) and alternator
pulley (2).
Check the fan belt (3). Upon detection of any of
following conditions, replace.
Rupture or cracking.
The belt is worn to touch the bottom of pulley
V-grooves.
The belt is stretched loosely and is non-
adjustable.
Adjustment
Loosen bolt (5) and lock nut (4).
Rotate the adjustment bolt (6) to move the
alternator (7) and adjust the tension of fan
belt (1).
Increase tension: Clockwise Reduce tension:
Counter-clockwise
Tighten bolt (5) and lock nut (4).
Note: After the replacement with new belt,
run the engine at low idling speed for
approximately 3~5min to run in new belt and
then adjust the tension.
Replacement of hydraulic oil return filter
Slowly loosen the bleeding plug to relieve the pressure of oil tank.
While disassembling connector or plug or disconnecting hose, stand on one side, loosen slowly to
gradually relieve internal pressure, and then take out.
Warning
Please stop the engine and wait for the machine to cool down before maintenance.
The engine, hydraulic system, and many other parts are hot after operation. Touching such parts
can cause scalding. The hydraulic oil is also under high temperature and high pressure. Take caution
not to touch the hydraulic oil while loosening engine hood or connector. Operating the machine
under such condition can cause out-spray of hot oil which may result in scalding and injuries.
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