3.6. Lubrication and Maintenance Operations
3.6.24. Checking the engine belt
With the engine running, check visually the pulley of alter-•
nator, cooling air blower, crank shaft, to conrm these do
not oscillate.
Stop the engine!• Check belt tension.
Press belt with hand in the longest spot between pulleys (30 •
cm) with ca 110 N (25 lb) force, refer to the Fig. If slack X is
higher than belt thickness, tighten the belt.
Tighten the belt after you have slackened bolt for alternator •
holder (1), tensioning arm (2), by tilting out the alternator
away from the engine, refer to the Fig. Tighten bolt (1) with
66 Nm (49 lb ft) torque, tighten bolt (2) with 31 Nm (23 lb ft)
torque. Replace belt following its slackening, by tilting the
alternator back to the engine.
Note:
Please, measure accurately belt tension using a xture possible
to order with CUMMINS Company in line with Engine Mainte-
nance Manual (Section V15) which is part of Machine documen-
tation.
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