C.E. Niehoff & Co. A3-201 Adjustable Pulley Installation - Manual

II0075A
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A3-201 Adjustable
Dual Pulley
Installation Instructions
C. E. Niehoff & Co.
BRUSHLESS ALTERNATORS
1. Determine belt size by measuring across belt.
2. Determine number of spacers to be used
between pulley faces from following chart:
T T T T T
A
TTTTT Bolt on Fan
No. Description
A
Spacer
B Bolt – 4 req'd
C Hub
D Pulley Sheave – 3 req'd
E Backing Plate
F Rear Pulley Sheave
G Lock Washer – 4 req'd
H Key
J Retaining Ring
T T T T T T T T T T T T T T T
TTTTT B
TTTTT C
T T T T T
D
T T T T T T T T T T T T T T T
TTTTT E
F
T T T T T
J
DO NOT REMOVE RETAINING RING
REMOVE SCREWS TO DISASSEMBLE
TTTTT TTTTT BELT SIZE
Belt Size 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16
No. of
Spacers
0 1 2 3 4 5 6 6 6 6 6 6
1 more or 1 less spacer than number shown in chart can usually be used if desired.
3. Determine belt spacing by measuring old pulley as shown.
TTTTT TTTTT
MEASURE FROM INSIDE SURFACE TO
CORRESPONDING INSIDE SURFACE
OR CENTERLINE TO CENTERLINE.
4. Determine the amount of spacers required for proper belt spacing from the chart on the back of this
instruction sheet using the following steps: