Komatsu PC20R-8, Руководство по эксплуатации и техническому обслуживанию

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MAINTENANCE PLAN
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4.7.6 MAINTENANCE AFTER THE FIRST 250 HOURS OF OPERATION
4.7.7 MAINTENANCE EVERY 250 HOURS OF OPERATION
4.7.7.a ADJUSTING THE FAN BELT TENSION
These maintenance operations must be carried out after the first 250 hours of operation, together with those to
be carried out “EVERY 250 HOURS”.
•
CHANGE THE OIL IN THE TRAVEL REDUCTION GEARS
•
CHECK AND ADJUST THE ENGINE VALVE CLEARANCE
For further details on the various maintenance operations, see the sections “4.7.10 MAINTENANCE EVERY
1000 HOURS OF OPERATION” and “4.7.11 MAINTENANCE EVERY 2000 HOURS OF OPERATION”.
For the inspection and adjustment, contact your Komatsu Utility Dealer.
The fan belt can be reached by opening the engine hood (See
“3.5.1 ENGINE HOOD”).
The check is manual: press the belt with your thumb on the indi-
cated point with a force equal to approx. 6 kg; the resulting de-
flection must be approximately 10÷15 mm.
If the deflection exceeds this value, loosen the nuts (1) and (2)
that fasten the alternator (3) and, with a lever inserted between
the motor block and frame, make the alternator slide.
Lock the nuts and check again.
Use a 13 mm spanner.
A -Fan pulley
B -Driving shaft pulley
C -Alternator pulley
IMPORTANT
☞
•
If the belt is worn, change it and check the tension again
after a few hours of operation.
RWA09210
RWA09230
3
2
1
RWA09220
10
÷
15 mm
A
C
B