C.E. Niehoff & Co. C706 Installation

C706 Alternators

Installation Instructions

This symbol is used to indicate

CAUTION

presence of hazards that can cause
minor property damage.

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.

CAUTION

a. Use hardened washers between aluminum

surfaces and bolt heads and nuts.

b. OEM units are shipped with pulley, disc spring

washer and nut installed.

c. Aftermarket units are shipped with shaft collar,

disc spring washer and nut. Remove and
discard shaft collar. Install pulley and furnished
disc spring washer. Torque locknut to 163 Nm/
120 lb. ft.

d. Follow vehicle manufacturer’s recommenda-

tions for belt tension.

Slip bushing must be tightened against
bracket — see “CAUTION” above

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 sup­plied separately by request with aftermarket units.
Mounting screws on regulator should be torqued to

8.5 Nm/75 lb. in. If regulator is to be remote-mount­ed, see separate instructions packed with extended
wiring harness.

5. Regulator electrical connections:
a. Make sure alternator-to-regulator harness
plug is secure in regulator receptacle.

b. A2-214 or A2-321 regulator has P and D+ 6mm

stud terminals, and an IGN 5mm stud terminal.
Torque terminal nuts to 4.5 Nm/40 lb. in.

Battery output
cable terminal

12mm x1.75 bolt –

torque to 32 Nm/24 lb. ft.

Lock washer

T

T

Alternator B+ Terminal Stud

T

T

T

Washer

Insulator

T

T

T

Hardened washer

12mm/0.50 locknut –

torque to

88 Nm/65 lb. ft.

Regulator mounting screws –

torque to

8.5 Nm/75 lb. in.

Bracket

on engine

B– terminal 10mm locknut –

torque to 15 Nm/11 lb. ft.

T

T

C706

ADE View

Figure 1 - C706 Alternator Installation Details

C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline [phone]

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