435/485/535
4-11
Section 4 - Lubrication & Maintenance
Every 10 Hours or Daily
Operation 3
Check the Fan/Water Pump Belt Tension
The engine fan and water pump share the same drive
belt (2). A self adjusting spring-loaded idler (1) keeps
a constant tension on the belt. If the belt is found to
be loose, check the pivot of the spring-loaded idler for
binding. If the spring-loaded idler is operating fine,
belt replacement maybe necessary.
If the belt requires replacement, install a square end
of a 19 mm (3/4
") breaker bar into the slot of the idler
and release the spring tension by pushing down on the
wrench. Slip the old belt off the engine pulleys and
install a new belt. Release the wrench and allow the
spring-loaded idler to apply belt tension.
Replacement Fan/Water Pump Belt P/N: 86033867
Operation 4
Check the Tension on Alternator/A/C Compressor Belt
The alternator and AC compressor share the same
drive belt (4). A self adjusting spring-loaded idler (3)
keeps a constant tension on the belt. If the belt is
found to be loose, check the pivot of the spring-loaded
idler for binding. If the spring-loaded idler is operating
fine, belt replacement maybe necessary.
NOTE: The fan/water pump belt has to be removed
first to gain access - see above.
If the belt requires replacement, install a square end
of a 13 mm (1/2
") breaker bar into the slot of the idler
and release the spring tension by pushing up on the
wrench. Slip the old belt off the engine pulleys and
install a new belt. Release the wrench and allow the
spring-loaded idler to apply belt tension.
Replacement Alternator/A/C Compressor Belt
P/N: 86033868
NOTE: Drive belts are available from your Buhler
Versatile dealer.
NOTE: Refer to your Cummins Engine Manual for
more information regarding belt replacement, wear
guidelines, and pulley alignment.
Figure F4-24 shows the correct routing of the belts.
• Fan/water pump belt (2)
• Alternator/AC compressor belt (4)
1
2
3
4
4
2
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