4.
Inspect the belts (1) for cracks. Inspect the belts
for contamination. If necessary, replace the belts.
Refer to “Replacement” for more information.
5.
The belt tension must be checked at position A.
Use a suitable spring balance and a suitable
straight edge to check the belt tension.
6.
The belt tension should be 62 N (14 lb) with a
maximum deflection at position B of 16 mm
(0.63 inch).
7.
Adjust the belts if the belt tension exceeds or is
below 62 N (14 lb). Refer to “Adjustment” for more
information.
8.
Install the inspection guard (X) and inspection
guard (Y).
9.
Restore the electrical supply to the engine.
Adjustment
1.
Ensure that the electrical supply to the engine is
isolated. As required, remove the guards.
Illustration 35
g06021378
Typical example
2.
Loosen bolts (5) and loosen the locknut (4).
3.
Rotate the rod (3) to achieve the correct tension of
belts (1). Refer to “Inspection” for the correct
specification.
4.
Tighten the locknut (4) to a torque of 120 N·m
(88.5 lb ft). Tighten bolts (5) securely.
5.
Ensure that the electrical supply to the engine is
isolated. Install the guards.
Replacement
Note:
Fan drive belts must be replaced as a set. Do
not replace individual belts.
Removal of the Fan Drive Belts
Illustration 36
g06021378
Typical example
1.
Ensure that the electrical supply to the engine is
isolated. As required, remove the guards.
2.
Loosen bolts (5) and loosen the locknut (4).
3.
Rotate the rod (3) until the pulley (2) is toward the
center of the engine.
4.
Remove the belts (1).
Installation of the Fan Drive Belts
1.
Install new belts (1) over the pulleys.
2.
Rotate the rod (3) to achieve an initial tension of
77 N (17 lb). The total deflection should not
exceed 16 mm (0.63 inch).
3.
Tighten the locknut (4) to a torque of 120 N·m
(88.5 lb ft). Tighten bolts (5) securely.
4.
Rotate the pulleys for the fan drive belts three to
four revolutions to ensure that the fan drive belts
are correctly installed. Ensure that the tension is
still 77 N (17 lb).
54
SEBU9077-01
