C.E. Niehoff & Co. C672 Alternator Installation - Manual

II211A
Page 1 of 1
C672 Alternator
Installation Instructions
This symbol is used to indicate presence
of hazards that can cause minor property
damage.
CAUTION
1. Install alternator as shown in Figure 1:
Slip bushings located in front and
rear mounting lugs must be
securely tightened against alter-
nator mounting bracket on engine.
Failure to do so can result in
broken mounting lugs or broken
mounting bracket.
a. Use hardened washers between aluminum
surfaces and bolt heads and nuts. Bolts to be
SAE grade 5 min., metric class 8.8 min.
b. OEM units are shipped with pulley, disc spring
washer and locknut installed.
c. Aftermarket units are shipped with shaft collar,
disc spring washer, and nut. Remove and dis-
card shaft collar. Install pulley and furnished
disc spring washer. Torque nut to 163 Nm/
120 lb. ft.
d. Follow vehicle manufacturer’s recommendations
for belt tension.
Figure 1 - C672 Alternator Installation Details
CAUTION
Hardened washer
2. All cabling, wiring or conduit must be supported
within 305 mm/12 in. of termination on alternator.
3. Choose wire gauge capable of handling maximum
alternator output with no more than 0.4 V drop on
each leg from alternator to battery.
4. Regulator is furnished with OEM units and is sup-
plied separately by request with aftermarket units.
Mounting screws on regulator should be torqued to
8.5 Nm/75 lb. in.
5. Make electrical connections to CEN regulator as
required, using proper ring terminals (follow vehicle
manufacturer’s diagram and separate instructions
packed with extended wiring harness when used):
a. Make sure alternator-to-regulator harness
is plugged securely in regulator receptacle.
b. A2-342 regulator furnished with some units
has
additional:
• 3-pin connector for D+/Phase/Eng
connection to vehicle
• J1939 connector to vehicle
Securely attach appropriate vehicle cables to
these connectors as required.
M16/0.63 bolt and washer –
torque to 108 Nm/80 lb. ft.
Slip bushings in front and rear mounting
lugs must be tightened against bracket —
see “CAUTION” above
Bracket
on engine
Alternator B – M10x1.5 bolt,
lockwasher and washer—
torque to 15 Nm/11 lb. ft.
B+ terminal –
see inset above
B+ terminal M12 x 1.75 bolt –
torque to 30 Nm/22 lb. ft.
Battery output
cable terminal
Washer
Lock washer
M20 nut–torque to
163 Nm/120 lb. ft.
Disc spring
washer
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
3-pin
connector
J1939
connector