BELT
INSTALLATION, ALIGNMENT & TENSIONING
Correct belt alignment
is
essential for maximum alternator and belt service life. The center line of
all pulleys related to the alternator drive must
be
within
1/32"
of the true center line. See illustration below.
Tighten drive belts by applying pressure to the alternator front housing
ONLY.
DO NOT apply
pressure to the rear housing or stator. Set belt tension to the engine manufacturer's
recommendations.
If this information is not available, tighten belts to the
pOint
where the alternator
fan cannot be turned by hand.
AMMETER
CAUTION:
APPLY PRESSURE
HERE (TO FRONT
HOUSING ONLY)
WHEN SETTING BELT
TENSION
ALTERNATOR PULLEY AND ENGINE
/
I
DRIVE PULLEY MUST BE
IN
LINE
WITH EACH OTHER.
REAR FRONT
HOUS ING HOUSING
ALTERNATOR BELT ALIGNMENT
Ammeter requirements vary with
application.
An
original equipment ammeter may be difficult to
replace with a higher reading unit, due to limited panel space and the vehicle wiring system.
For
an
ammeter to show alternator charge and accessory discharge, it must
be
connected as shown
in
illustration below.
ALTERNATOR
CHARGE
PATH
1
o
AMMETER
BATTERY
DISCHARGE
PATH
T~
I
~)
l('
AMMETER CHARGE & DISCHARGE CIRCUIT
An
accessory ammeter may
be
used if it provides 75-0-75 scale information. Such meters are
available
in
two types: direct reading, and external shunt types. Internal shunt (direct reading)
ammeters are not
usually recommended for charging systems of high output capability due to the
long heavy gauge wiring required. Failure to provide adequate wiring will result
in
poor system
performance.
78
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