MAINTENANCE PROCEDURES
214
WEAM009500
4.9.5.g
CHECKING AND ADJUSTING THE FAN BELT TENSION
WARNING
q
Soon after the machine has been stopped, the engine is very hot and may cause burns; let the engine
cool down before carrying out any check.
q
To carry out this maintenance operation it is necessary to tilt the cab floor. Carefully follow the instruc-
tions given in paragraph "3.2.9 TILTING THE CAB FLOOR" or have this operation carried out by your Ko-
matsu Dealer.
CHECK
The fan belt can be reached after tilting the cab floor (see "3.2.9
TILTING THE CAB FLOOR").
1.
The check is manual: press the belt with a thumb on the
intermediate point between the drive shaft pulley and the fan
pulley with a force equal to 98 Nm (10 kg); the resulting
deflection must be approximately 9-13 mm..
2.
If the deflection exceeds this value, adjust by proceeding as
indicated below.
ADJUSTMENT
1.
Loosen the adjusting screw (2) and the alternator fastening
screws (3).
2.
With a lever inserted between the alternator (1) and the
engine block, make the alternator slide.
3.
Lock the adjusting screws and the alternator fastening
screws, then check again.
IMPORTANT
q
If the belt is worn, change it and check the tension again af-
ter a few hours of operation.
Summary of Contents for PC26MR-3
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Page 19: ...SAFETY AND ACCIDENT PREVENTION 17 ...
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Page 63: ...THE MACHINE AND ITS OPERATIONS 61 ...
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Page 171: ...MAINTENANCE 169 ...
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Page 227: ...TECHNICAL SPECIFICATIONS 225 ...
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Page 235: ...AUTHORISED EQUIPMENT 233 ...
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Page 252: ... 2008 KOMATSU UTILITY EUROPE S p A All Rights Reserved Printed in Europe 01 2008 ...