Alternator - New Holland Boomer 47 Operator's Manual

Alternator

The tractor's 85 A alternator is belt-driven from the engine
crankshaft pulley. It is important that belt slippage does not
occur, or the charging system will be affected. To adjust the
belt, see 7-36.
Other than belt adjustment, the only alternator mainte-
nance required is to periodically inspect the terminals to
ensure they are clean and tight. The alternator cooling fan
should also be cleaned periodically.
When working on or checking the alternator, adhere to fol-
lowing precautions or alternator damage may occur:
• Do not UNDER ANY CIRCUMSTANCES short the
field terminal of the alternator to ground.
• Do not disconnect the alternator output lead or bat-
tery cables while the alternator is operating.
• Do not remove the alternator from the tractor with-
out first disconnecting the negative (-) battery cable.
When removing the battery, disconnect the negative
(-) cable first.
• To install a battery, MAKE SURE that the positive
(+) cable is connected first and that the negative ter-
minal is connected to ground. Reverse polarity will
destroy the rectifier diodes in the alternator.
If the battery charge warning light illuminates, indicating
that the alternator is not charging the battery, check the
fan belt and the wiring connections. If these items are in
satisfactory condition and the warning light continues to
indicate no charge, consult your New Holland Dealer.
7 - MAINTENANCE
7-38
1
NHIL13CT01039AA