C.E. Niehoff & Co. C321 Installation

C. E. Niehoff & Co.

BRUSHLESS ALTERNATORS

C321 Alternator

Installation Instructions

CAUTION

This symbol is used to indicate
presence of hazards that can cause

minor property damage.

Install C321 alternator as shown in Figure 1:

Slip bushing located in rear mounting

CAUTION

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.

0.625 - 18 Locknut

torque to 136 Nm/100 lb.ft.

Hardened washer

12mm/0.50 in. Mounting bolt

Hardened washers

torque to 9 Nm/80 lb. in.

G

G

G

12mm/0.50 Locknut –

torque to 88 Nm/65 lb. ft.

G

1. Units are shipped with shaft collar, hardened
washer and locknut. Remove and discard
shaft collar. Install pulley and furnished
hardened washer . Torque locknut to 136 Nm/
100 lb. ft.

2. Use hardened washers between aluminum
surfaces and bolt heads and nuts. Torque
mounting bolts to 88 Nm/65 lb. ft.

3. All cabling, wiring or conduit must be sup­ported within 305 mm/12 in. of termination
on alternator.

4. Choose wire gauge for B+ and B– cables
capable of handling maximum alternator
output with minimum voltage drop.

B– terminal

0.25-20 locknut –

G

B+ terminal

0.3125-18 locknut –
torque to

G

9 Nm/80 lb. in.

G

G

12mm/0.50 in.

mounting bolt

(full length)

G

G

Hardened

washer

Alternator

mounting

bracket

on engine

G

Bracket

on engine

G

G

G

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

12mm/0.50 Locknut –

torque to

88 Nm/65 lb. ft.

Hardened washer

Figure 1 - C321 Alternator Installation Details

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

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