3406 and 3456 Voltage Adjust Potentiometer May Be Incorrect Caterpillar

3406 and 3456 Voltage Adjust Potentiometer May Be Incorrect

Usage:

3406 and 3456 Voltage Adjust Potentiometer May Be Incorrect

CONFIDENTIAL TIBU4587-00

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TECHNICAL INFORMATION BULLETIN	June 29, 2005
Engines	3406C (C2G, C5G, C8G) 3456 (C1G, C3G, C4G, C2T)
	Component Code(s) 5721

SUBJECT: 3406 and 3456 Voltage Adjust Potentiometer May Be Incorrect

PROBLEM:

The range over which the generator output voltage can be adjusted is narrow and may be unacceptable to the operator.

SOLUTION:

Inspect the Voltage Adjust potentiometer (VAR) in order to determine the resistance rating. The correct rating is 1K Ohm, as indicated in Illustration 1.

If the installed potentiometer?s resistance rating is not 1K Ohm, remove the installed potentiometer and replace it with a new potentiometer (122-9458 Potentiometer).

Use a 100-Watt soldering iron and rosin core solder to connect the wires to the 122-9458 Potentiometer.

Check the generator set for proper operation.

Illustration 1.

COPYRIGHT 2005 CATERPILLAR
ALL RIGHTS RESERVED

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