Komatsu PW160-7H Operation & Maintenance Manual page 294

SERVICE PROCEDURE
CHECK PLAY OF TURBOCHARGER ROTOR.
Ask Komatsu distributor to check the play of the turbocharger
rotor.
CHECK & ADJUST VALVE CLEARANCE
As a special tool is required for removing and adjusting the parts
contact your Komatsu distributor for service.
CHECK FAN BELT TENSIONER BEARING BELT
AND FAN HUB
Check the tensioner bearing
●
With the fan belt removed rotate fan hub.
The tensioned pulley should spin freely with no rough spots
defected under hand pressure.
Check the tensioner bearing.
●
Replace bearing if damaged.
●
Check fan hub. With the drive belt removed, rotate fan hub.
●
REMARK
The fan hub should spin freely without excessive end play.
Check the fan hub bearing.
●
Replace bearing if damaged.
●
CHECK FAN BELT TENSION AND REPLACE FAN
BELT
Special tools are required for inspection and replacement of
●
the fan belt. Contact your Komatsu distributors for inspection
and replacement.
REMARK
An installed auto fan belt tension adjuster, "Auto Tensional
Fan Belt", dispenses with the belt deflection adjustment.
294
MAINTENANCE
PW160-7H VEAM390100