C.E. Niehoff & Co. A8-219 Installation

A8-219

Low Frequency EMC

Filter Assembly

Installation Instructions

Electromagnetic compatibility (EMC)/electromag­netic interference (EMI) low and high frequencies
can interfere with the operation of electrical/
electronic systems, especially communication
equipment.

If diagnostic tests performed at system and
component level do not identify the source,
installing an EMC filter may help to reduce or
eliminate EMC condition.

EMC filter can be installed at

NOTICE

power supply of the affected
component or at the B+ terminal
on the alternator.

To install filter assembly:

1. Disconnect battery wiring:
a. Disconnect vehicle battery master switch
and vehicle battery ground cable(s).
b. Remove cable from alternator B+ terminal
or affected component.

2. Set unit in mounting location on vehicle surface
already grounded in a location close to alternator
or affected component. Torque hardware to

8.5 Nm/75 lb. in.

3. Connect red lead provided with kit.

The length of the cable

NOTICE

supplied with the filter has
been de signed t o reduce mo s t
EMC conditions.

In severe EMC conditions,
shortening the cable may
optimize the filtering.

a. Larger term inal end to alternator B+ termi nal

or component power terminal as shown in
stacking order. Torque terminal nut to torque
value specified by alternator model or compo­ nent manufacturer.

b. Smaller terminal end to terminal on filter.

Torque to 4.5 Nm/40 lb. in.

4. Reconnect vehicle battery master switch and
vehicle battery ground(s).

5. Operate engine and check alternator output or
component operation.

To B+ terminal on alternator or
power supply terminal on component
(see Figure 2 for stacking order)

GROUNDED SURFACE

Figure 1 – Installing A8-219 EMC Filter

B+ cable terminal or power supply terminal

Flat washer

B+ bolt

Red lead from

EMC Filter

Belleville washer (cup down)

Figure 2 – Top View of Alternator B+ Terminal or Component Power Terminal Stacking Order with EMC Filter Lead

If you have questions about your alternator or any of these inst ructions, or if you need to locate a Factory Authorized Service Dealer, please contact us at:

TEL: [phone] USA and Canada • TEL: [phone] outside USA and Canada • FAX: [phone]

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C. E. Niehoff & Co.• 2021 Lee Street • Evanston, IL 60202 USA

E-mail us at [e-mail]

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