PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SCAC WATER TEMPERATURE REGULATOR ON CERTAIN PETROLEUM 3512C ENGINES Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SCAC WATER TEMPERATURE REGULATOR ON CERTAIN PETROLEUM 3512C ENGINES

Usage:

SEBE9906-00

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24May2006

U-517

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SCAC WATER TEMPERATURE REGULATOR ON CERTAIN PETROLEUM 3512C ENGINES
1393		PI31007

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31007" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI31007" as the Part Number, "7751" as the Group Number, "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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COMPLETION DATE	TERMINATION DATE
30Nov2006	31May2007

PROBLEM

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The wrong water temperature regulator was called out on the assembly print, resulting in degraded emissions performance.

AFFECTED PRODUCT

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Model	Identification Number
3512C	LLA00103-00130, 133, 137-140, 143 LLF00101-00106

PARTS NEEDED

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Qty	Part Number	Description
2	6I4952	REGULATOR-TEMP
2	6V1454	SEAL-O RING

ACTION REQUIRED

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Replace 219-3306 temperature regulators with 6I-4952 temperature regulators.

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OWNER NOTIFICATION

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U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
100%	100%	0%	0%	0%	0%

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NOTE: This is a 3.0-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.

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SCAC WATER TEMPERATURE REGULATOR

MODELS INVOLVED - CERTAIN PETROLEUM 3512C ENGINES

Dear Caterpillar Product Owner:

Separate Circuit After Cooler Water Temperature Regulators (219-3306) regulate the temperature at too high a temperature range to allow proper emissions. The Water Temperature Regulators (219-3306) need to be replaced with new Water Temperature Regulators (6I-4952).

You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

Please refer the dealer to their Service Letter dated 24May2006 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 24May2006 Service Letter

Rework Procedure

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3512C SEPARATE CIRCUIT AFTERCOOLER
WATER TEMPERATURE REGULATOR
REMOVAL/REINSTALLATION

Removal Procedures:

NOTICE:
Care must be taken to ensure that fluids are contained during
performance of the removal and installation of the temperature regulators. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids

Refer to Special Publication, NENG2500, ?Caterpillar Tools and Shop Products Guide? for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.

NOTICE:
Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

Parts called out in images 1.1.1 ? 1.3.1:

(1) Bolts, retainers, and retaining ring
(2) SCAC coolant tube
(3) Adapter
(4) SCAC coolant tube clamps
(5) Bolts
(6) Thermostatic Control Valve Group
(7) Seals (6V-1454)
(8) Temperature Regulators (219-3306)

1. Drain the cooling system until the level of the coolant is below the thermostatic control valve group. Collect all fluids in clean containers for use later.

2. Remove bolts, the retainers, and retaining ring (1) that fastens tube (2) to the adapter (3).

3. Loosen the clamps (4) that hold tube (2) in place.

Image1.1.1

Image1.1.2

4. Remove the four bolts (5) that fasten the adapter (3) to the thermostatic control valve group (6).

Image1.2.1

5. Remove adapter (3) from thermostatic control valve group (6) by moving the adapter down and away from the tube (2).

Image1.3.1

6. Remove both seals (7) from thermostatic control valve group( 6), discard both seals.

7. Remove both temperature regulators (8) and discard

8. Install two temperature regulators (6I-4952) into the thermostatic control valve group (6).

9. Install two new seals (6V-1454) into groves around temperature regulators.

10. Attach adapter (3) onto thermostatic control valve group (3) with the four bolts (5). Be sure to put the tube (2) back into adapter prior to attaching adapter to the thermostatic control valve group (6).

11. Tighten the clamps (4) that hold the tube (2) in place.

12. Re-install and tighten the bolts, retainers, and retaining ring (1) that fasten tube (2) to the adapter (3).

13. Fill Separate Circuit After Cooler (SCAC) system with coolant. Check the coolant level.

14. Clean up any coolant that was spilled.

15. Start engine and check for leaks.