Product Support Program For Repositioning The Water Temperature Sensor For The Inlet Air Heater System On Certain 3406C Truck Engines Caterpillar

NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4205" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Termination Date

Problem

The water temperature sensor on certain 3406C Truck Engines needs to be removed from the regulator housing to eliminate false readings.

Affected Product
Model & Identification Number

3406C (8PN11761-12183)

Parts Needed

1 - 1A5183 Bolt (use with belt tightener)

2 - 1A5964 Bolt

2 - 5M2894 Washer

1 - 8T6762 Plug

1 - 1497479 Control (12 Volt)

1 - 1505028 Bracket Assembly

1 - 1521332 Spacer

Action Required

See the attached rework procedure.

Service Claim Allowances

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach.

(1-Rework Procedure)

Rework Procedure

1. Remove the temperature sensor from the regulator housing.

2. Plug regulator housing with an 8T6762 Plug.

3. Install the temperature sensor into 1505028 Bracket Assembly and is in ambient air. (See Illustrations 2 and 3).

4. Remove 1333318 Control and replace with 1497479 Control.

Illustration 1

Illustration 2

Illustration 3