Inspection of the Belt Tensioner

sd plus mm 01.01.003

Belt tension is automatically adjusted with a spring tensioner. See Fig. and Fig.. Check that the tensioner is holding tension on the belt by inserting the end of a breaker bar in the 1/2-inch square hole on the forward face of the tensioner, and rotating the tensioner away from the belt. When the breaker bar is slowly released, the tensioner should return to its original position. The tensioner should rotate smoothly with no binding. If not, see Principles of Operation, EPA10 Engine of the 108SD Plus and 114SD Plus Workshop Manual for replacement instructions.

  1. Front Belt

  2. Rear Belt

  3. AC Compressor

  4. Spring Tensioner

  5. Fan Clutch

  6. Water Pump

Fig. 1, DD 13/15/16 Drive Belt Routing

  1. Spring Tensioner

  2. Alternator Pulley

  3. AC Compressor

  4. Fan Clutch

  5. Drive Belt

  6. Crank Shaft Pulley

Fig. 2, Cummins ISC/ISL Drive Belt Routing

Note:
Parent topic: Engine Drive Belt Inspection
Document Number: 0000120658
Manual Publication Date: 2024-06-03
Topic Publication Date: 2024-10-31