Engine Belts - New Holland Boomer 47 Operator's Manual

Engine belts

NOTE: Check the condition of the fan and air pump belts after every 50 hours of operation. Check belt tension after
every 300 hours of operation.
Fan and alternator belt
The belt- (1) that drives the cooling fan and alternator is
located at the front of the engine.
When 5 kg (11 lb) of pressure is applied midway between
the belt pulleys, a correctly tightened belt will deflect 5 mm
(0.2 in) .at point (A).
If the fan belt is slipping, fan efficiency is lowered, resulting
in the engine running too hot. or the alternator not charging
If the belt is too tight, the life of the alternator bearing will
be shortened. If the fan belt shows signs of cracking or
fraying, install a new one.
Air pump belt
The belt (2) that drives the engine air pump is located at
the front of the engine.
When 5 kg (11 lb) of pressure is applied midway between
the belt pulleys, a correctly tightened belt will deflect
10 mm (0.4 in) .at point (A).
If the air pump belt is slipping, pump efficiency is lowered.
Resulting in the (DPF) burning not operating at a high
enough temperature or difficulty in starting burner. If the
belt is too tight, the life of the pump bearing will be short-
ened. If the fan belt shows signs of cracking or fraying,
install a new one.
7 - MAINTENANCE
7-21
1
NHIL13CT01234AA
2
NHIL13CT01234AA