C.E. Niehoff & Co. C703 Alternator w/Diode Module Installation - Manual

II0054B
Page 1 of 2
C703 Alternator with
Diode Isolator Module
Installation Instructions
1. Mount CEN Diode Isolator Module on
module bracket before attaching to
C703 alternator drive end housing.
a. Module bracket has countersunk
holes in face for screws. These holes
must face up when module is attached.
b. Apply a layer of heat sink compound
such as GC/Waldon HSC#10-8109 zinc
oxide-filled silicone or its equivalent
on the back of the module before setting
in place on the module bracket. See
Figure 1. The diagram stamped on the
side of the module can face either the
drive end or the anti-drive end of C703
alternator.
c. Secure module on bracket with 1/4-20 flat
head screws, lock washers, and nuts provid-
ed in the kit. See Figure 1. Torque to 5.1 Nm/
45 lb. in.
2. Mount module bracket (with module in place)
on C703 drive end housing as shown in
Figures 1 and 2:
a. Secure bracket with four #10-32 flat
head screws. Torque to 6.8 Nm/60 lb. in.
b. Use a suitable adhesive such as Loctite®
222 on screws. Follow manufacturer’s
instructions.
3. Attach black wires provided in kit to module.
See Figure 2. Connect small ring terminal end
of wire to module:
a. Shorter black wire should be attached to one
outside
terminal on module.
b. Longer black wire should be attached to the
opposite outside terminal on module.
c. Tighten screws on module to 5.1 Nm/45 lb.in.
4. Attach other end of black wires to diodes.
Follow routing shown in Figure 3. Tighten hard-
ware to 3.4 Nm/30 lb. in.
5. Coat phase terminals and module terminals
with Dow Corning® 1-2577 Low VOC RTV coat-
ing or equivalent. Do not use coating
containing acetic acid (vinegar smell) on
electrical components.
FIGURE 1
FIGURE 2
1/4-20 fl at head screw,
lock washer, and nut
(one each per side)
FIGURE 3
T
T
T
T
#10-32
fl at head screws
(4)
STEPS 1—5 MUST BE PERFORMED WHEN ALTERNATOR IS ON BENCH.