Remove Pulley,
Fan
and Spacer:
The pulley is a slip-fit on the rotor shaft, positioned with a Woodruff
Key.
Remove the nut and
lockwasher from the shaft using
an
impact wrench or other suitable tool.
After nut and lockwasher are removed the alternator can be separated from the pulley.
The fan will slide over the
key.
The key may be removed with diagonal pliers, or with a screwdriver.
Inspect the fan for cracked or broken fins, note the condition of the mounting hole. If worn from
running
loose, replace the fan to insure balance.
Inspect pulley
for possible faults as listed
in
illustration below.
PULLEY REMOVAL
Separate Rotor from Front Housing:
CHECK
FOR WORN
DRIVE SURFACES
.
..,.--
__
.....
CHECK FOR POLISHED
SURFACE
HERE.
NOTE CONDITION OF
____
-=:;:::::==1
KEY GROOVE.
I-
CHECK BORE
FOR
WEAR.
PULLEY
INSPECTION POINTS
Position front housing on support blocks placed on an arbor press. Push rotor assembly from
housing.
See illustration below.
I--PRESS
/
FRONT
HOUSING
SEPARATING ROTOR FROM FRONT HOUSING
72
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