Belt Routing

Refer to the following diagrams for belt routings on the various engines.

• Caterpillar: 

  See Fig. for CAT 3126B model.

  See Fig. for CAT C10 and C12 models.

  See Fig. for CAT C15 and C16 models.

• Cummins: 

  See Fig. for Cummins ISX Signature 600 model, pre-2007.

  See Fig. for Cummins ISM model.

  See Fig. for Cummins N14 model.

  See Fig. for Cummins ISX models, 2007 or later.

  See Fig. for Cummins ISC and ISL models.

• Detroit Diesel:  

  See Fig. for DD Series 60 model.

  See Fig. for DD 13/15/16 models.

Fan Clutch

Air Conditioning Compressor

Alternator

Spring-Loaded Tensioner

Fig. 1, Caterpillar 3126B

Fan Clutch

Air Conditioning Compressor

Alternator

Spring-Loaded Tensioner

Fig. 2, Caterpillar C10 and C12

Fan Clutch

Air Conditioning Compressor

Alternator

Fig. 3, Caterpillar C15 and C16

Fan Clutch

Air Conditioning Compressor

Alternator

Spring-Loaded Tensioner

Fig. 4, Cummins ISX Signature 600 (pre-2007)

Fan Clutch

Air Conditioning Compressor

Alternator

Spring-Loaded Tensioner

Fig. 5, Cummins ISM

Fan Clutch

Air Conditioning Compressor

Alternator

Fig. 6, Cummins N14

Fan Belt

Alternator

AC Compressor

AC Drive Belt

Fan Clutch

Fig. 7, Cummins ISX (2007 or later)

Spring Tensioner

Alternator Pulley

AC Compressor

Fan Clutch

Drive Belt

Crank Shaft Pulley

Fig. 8, Cummins ISC/ISL

Alternator

AC Belt

Air Conditioning Compressor

Fan Clutch

Fan Belt

Spring-Loaded Tensioner

Fig. 9, Detroit Diesel Series 60

Front Belt

Rear Belt

AC Compressor

Spring-Loaded Tensioner

Fan Clutch

Water Pump

Fig. 10, DD 13/15/16