C.E. Niehoff & Co. C659 Alternator Installation - Manual

II221A Page 1 of 2
C659
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 bushing located in rear mounting
foot must be securely tightened
against alternator mounting bracket
on engine. Failure to do so can result
in broken mounting feet or broken
upper mounting bracket.
a. Use hardened washers between aluminum
surfaces and bolt heads and nuts.
b. OEM units are shipped with pulley, hardened
washer and locknut installed.
c. Aftermarket units are shipped with shaft collar,
disk spring washer, and nut. Remove and
discard shaft collar. Install pulley and furnished
disc spring washer. Torque nut to 163 Nm/
120 lb. ft.
d. Follow vehicle manufacturer’s recommenda-
tions for belt tension.
Figure 1 - C659 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:
a. Make sure alternator-to-regulator harness is
plugged securely in regulator receptacle.
b. A2-146 regulator has P terminal with M6 stud
and D+ terminal with M5 stud. Torque terminal
nuts to 4.5 Nm/40 lb. in.
• P terminal taps AC voltage, typically half the
charge voltage.
• D+ terminal provides 28 VDC voltage output
to multiplex controller. When connecting D+
terminal to controller through a relay, the
relay coil must be diode protected and rated
for proper voltage.
12mm/0.50 Locknut –
torque to 88 Nm/65 lb. ft.
Slip bushing must be tightened against
bracket — see “CAUTION” above
Bracket
on engine
M12x1.75 bolt–torque to 32 Nm/24 lb. ft.
Washer
Battery output
cable terminal
Lockwasher
Insulator
Alternator B+ Terminal Stud
M12x1.75 bolt–torque to 32 Nm/24 lb. ft.
Washer
Battery ground
cable terminal
Lockwasher
Insulator
Alternator Isolated B− Terminal Stud
M12x1.75
thread–torque
bolt to 61 Nm/
45 lb. ft.
B− B+