PRODUCT SUPPORT PROGRAM FOR REPLACING COOLANT PRESSURE SENSORS ON CERTAIN C175-16 PETROLEUM ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING COOLANT PRESSURE SENSORS ON CERTAIN C175-16 PETROLEUM ENGINES

Usage:

REBE8991-00

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19Oct2012

U-552

D-470

O-508

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REPLACING COOLANT PRESSURE SENSORS ON CERTAIN C175-16 PETROLEUM ENGINES
1439 191W		PS43728

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43728" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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TERMINATION DATE

31Oct2014

PROBLEM

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The existing coolant pressure sensor can leak coolant on certain C175 Petroleum Engines. If the existing coolant pressure sensor is not replaced it may cause coolant leaks.

AFFECTED PRODUCT

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Model	Identification Number
C175-16	P6L00100-00103, 105-160, 1000-1009

PARTS NEEDED

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Qty	Part Number	Description
4	2190669	SEAL-O-RING-STOR
4	3837548	SENSOR GP-PRESS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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Refer to the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-20000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 1.0-hour job

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PARTS DISPOSITION

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

Rework Procedure

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Perform all steps necessary to prepare the engine for safely replacing the coolant pressure sensors.

NOTE: All pressure sensors are equipped with check valves, therefore the coolant system need not be drained when replacing sensors.

Four coolant pressure sensors will be replaced.

Sensor Locations

1) The SCAC coolant pump outlet pressure sensor is located in SCAC pump outlet casting at front right of engine. Refer to Image1.1.1.

2) The JW block inlet coolant pressure sensor (primary) is located in JW front cover elbow behind oil filters on front of engine. Refer to Image1.1.2.

3) The JW block inlet coolant pressure sensor (secondary) is located in JW front cover elbow behind oil filters on front of engine. Refer to Image1.1.2.

4) The JW block outlet coolant pressure sensor is located in front cover at front left of engine. Refer to Image1.1.3.

Image1.1.1

Image1.1.2

Image1.1.3

1. For each sensor, unplug the harness and remove the sensor making sure to remove sensor only and leave check valve installed.

2. Install new 219-0669 O-ring onto the new 383-7548 Pressure Sensor.

3. Install new pressure sensor. Tighten the sensor to 10 +/- 2 N.m.

4. Plug the harness into sensor.