Ce-niehoff-co C714 Troubleshooting Guides Instrukcja Użytkownika Pobierz pdf (Strona 5)

Page 5

TG54B

Regulator is defective.

Set DMM to diode test. Connect black lead of DMM to B+ terminal on alternator. Con-

nect red lead to pin B on harness plug. DMM should read voltage drop. Reverse leads.

DMM should read OL.

Check continuity of thermal switch inside con-

trol unit: Remove drive end cover on alternator.

With DMM, check continuity between pin B on

harness plug and diode shown in Figure 4

below. Does continuity exist?

Yes

Alternator is

defective.

Chart 2 – Continuation of Chart 1 as Noted



Thermal switch

in control unit

is defective.



Figure 4 – Diode Arrangement Inside Drive End Housing

USE THIS DIODE



Section C: Advanced Troubleshooting (CONT’D)

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

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

TEL: 800.643.4633 USA and Canada • TEL: 847.866.6030 outside USA and Canada • FAX: 847.492.1242

E-mail us: service@CENiehoff.com

Visit our Web site: www.CENiehoff.com

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