C.E. Niehoff & Co. C540 Alternator Installation - Manual

II176A
Page 1 of 2
C540 Alternator
with Regulator
and External Rectifi er
Installation Instructions
C540 Alternator
1. Install alternator on pad mount per vehicle manu-
facturer’s instructions, including hardware specifi-
cations and torque.
2. Units are shipped with shaft collar, Belleville
washer and nut. Remove and discard shaft collar.
Install pulley and furnished Belleville washer.
Torque nut to 135 Nm/ 100 lb. ft.
External Rectifier and Bracket
1. Mounting location of rectifier and bracket should
provide proper cooling and protect rectifier from
direct water, road debris, or chemicals.
Rectifier can be mounted up to 6 feet away from
alternator. Harnesses cannot be strung together
to create different lengths.
2. Use hardened washers between aluminum
surfaces and bolt heads and nuts. Bracket
mounting bolts must have minimum .50 in.
thread engagement. See Figure 2 for torque
values.
3. Use a suitable adhesive such as Loctite ® 222
or equivalent on screws. Follow manufacturer’s
instructions.
Figure 1 - C540 Alternator Installation
Figure 2 - Rectifi er and Bracket Installation
Locknut
(4 places) –
torque to
54 Nm/40 lb.ft.


Lockwasher

Flat washer


11mm/0.44 in.
Mounting bolt - grade
5 or better
.3750-16 UNC-2B Mounting bolt
grade 5 or better–
torque to 27 Nm/20 lb.ft.

Lockwasher

Flat washer

Nut–
torque to
135 Nm/100 lb.ft.

Belleville
washer

Regulator
1. Mounting location of regulator must provide
protection from water, road debris, or chemicals.
Regulator can be located up to 18 inches away
from the rectifier. If extension harness CEN
A9-448 is added, the regulator can be moved an
additional 43 in. away.
2. See Figure 3 for torque values. Figure 3 - Regulator Installation

#10-32 x .62 fl ange lock screw (4 places) -
torque to 8.5 Nm/75 lb. in.