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

4

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

3

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

2

 

Operation 4

 

Check the Tension on Alternator/A/C Compressor Belt

1

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

F4-10

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

2

NOTE: Drive belts are available from your Buhler

4

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)

F4-24

435/485/535