C - EVERY 250 HOURS OF SERVICE
C2 - COMPRESSOR BELTS TENSION CHECK - ADJUST - Open the engine cover. - Unscrew the fastening screws (1) (fig. C2/1). - Remove the protective guard (2) (fig. C2/1).
Perform the operations described previously as well as the following operations:
C1 - FANBELT TENSION
C2/1
C2/2
CHECK - ADJUST
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- Open the engine cover. - Unscrew the fastening screws (1) (fig. C1/1). - Remove the protective guard (2) (fig. C1/1).
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C1/1
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- Check the belts for signs of wear and cracks and change if 3 necessary (see chapter: 3 - MAINTENANCE: FILTERS CARTRIDGES AND BELTS). FAN TO COMPRESSOR BELT - Check the belt tension between the fan pulley and the compressor pulley. - Under normal pressure exerted with the thumb of 10 lbf. (45N), the movement should be approximately 3/8” (10 mm). - Adjustment if necessary: a. Loosen screws (3) (fig. C2/2) two to three turns. b. Pivot the compressor assembly to obtain the belt tension required. c. Retighten screws (3) (fig. C2/2). COMPRESSOR TO ALTERNATOR BELT - Check the belt tension between the compressor pulley and of the alternator pulley. - Under normal pressure exerted with the thumb of 10 lbf. (45N), the movement should be approximately 3/8” (10 mm). - Adjustment if necessary: a. Loosen screws (4) (fig. C2/2) two to three turns. b. Pivot the alternator assembly to obtain the belt tension required. c. Retighten screws (4) (fig. C2/2). - Replace the protective guard 2 (fig. C2/1). NOTE: If the compressor belt is changed, check the tension again after 20 hours of operation.
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2 1 1
- Check the belt for signs of wear and cracks, and change if necessary (see chapter: 6 - MAINTENANCE: FILTER CARTRIDGES AND BELTS). - Check the belt tension between the crankshaft pulley and the alternator pulley. - Under a normal pressure exerted with the thumb 10 lbf. (45N), the tension should be approximately 3/8” (10 mm). - Adjustment if necessary: a. Loosen screws (3) (fig. C1/2) by two to three turns. b. Pivot the alternator assembly to obtain the belt tension required. c. Retighten screws (3) (fig. C1/2) to a torque of 16 ft.-lbs. (22 Nm). - Replace the protective guard (2) (fig. C1/1). C1/2 3
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NOTE: If the alternator belt is changed, check the tension again after 20 hours of operation. PRINTED IN U.S.A.
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913223/BP0206
