New Holland TD60D - Charging System Testing and Troubleshooting; Fan Belt Tensioner

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SECTION 55 -- ELECTRICAL SYSTEM -- CHAPTER 4
603.54.471.00 -- 11 -- 2004
Fan belt tensioner
Fig. 3. Belt for versions without air conditioning
1. Alternator
2. Belt tensioner
Fig. 4. Belt for versions with air conditioning
3. Belt tensioner securing nut
4. Belt
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4
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SYSTEM TESTING AND TROUBLE--SHOOTING
PRECAUTIONS
To avoid damaging alternator charging system
components, take the following precautions:
• DO NOT MAKE OR INTERRUPT any charging
circuit connection, including the battery, while
the engine is running.
• NEVER SHORT--CIRCUIT the alternator
positive terminal to check if it is working.
• ALW AYS DISCONNECT battery cables when
recharging the battery in the tractor with a
battery charger.
• ALW AYS CHECK battery polarity when
installing a battery or using a supplementary
battery to start the engine.
• DO NOT SHORT--CIRCUIT regulator input/
output terminals when the alternator is working.
• CONNECT POSITIVE TO POSITIVE AND
NEGATIVE TO NEGATIVE.
PRELIMINAR Y CHECKS
Before carrying out these electrical tests, carefully
inspect the charging system and the electrical
system in general.
Check continuity in all conductors and connections.
Check they are all clean and well fastened.
1. CHECKING THE BATTER Y
Check all battery elements with a densimeter. The
battery must be at least 70% charged and efficient.
2. CHECKING THE DRIVING BELT
Inspect the alternator driving belt and pulley, check-
ing that they are both clean, with no traces of oil or
lubricant and in good condition.
Check the alternator driving belt tension regularly. If
you suspect the belt is not tight, check the tensioner
as follows:
Belt for versions without air conditioning (Fig. 3)
-- slacken the nut (3) which secures the
alternator to the tensioner bracket (2).
-- with a lever, move the alternator (1) on the
tensioner bracket (2) to reach correct belt
tension and tighten the securing nut (3) to 55
Nm (40.5659ft lb).
Belt for versions with air conditioning (Fig. 4)
-- slacken the belt tensioner securing nuts (3)