PRODUCT IMPROVEMENT PROGRAM FOR CHECKING AND FLUSHING DEBRIS FROM THE SERVO HOUSING ON CERTAIN 3412 ENGINES Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR CHECKING AND FLUSHING DEBRIS FROM THE SERVO HOUSING ON CERTAIN 3412 ENGINES

Usage:

SEBE9302-01

August 11, 2005
(Revised September 2005)
U-270
A-195
D-209
O-223

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR CHECKING AND FLUSHING DEBRIS FROM THE SERVO HOUSING ON CERTAIN 3412 ENGINES
7751 1289		PI30859

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI30859" 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 "PI30859" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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.

NOTE: This Revised Service Letter replaces the August 11, 2005 Service Letter. Changes have been made to the Affected Product.

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COMPLETION DATE	TERMINATION DATE
February 28, 2006	August 31, 2006

PROBLEM

Debris in oil line on 3412 PEEC engine may cause an overspeed condition.

AFFECTED PRODUCT

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Model	Identification Number
3412	2WJ8269-8286
SPT342	3CZ421
3412C	4BZ6866, 6878, 6882, 6913, 6915, 6920, 6923-6924, 6926, 6932-6935, 6946, 6948-6949, 6951, 6953,- 6955, 6962, 6965, 6971, 6973, 6975-6977, 6982-6985, 6987, 6995-6998, 7001, 7004, 7007-7008, 7010, 7012, 7016, 7018, 7021-7022, 7024-7032, 7035-7036, 7041-7042, 7055, 7058, 7068, 7075, 7089, 7184, 7186-7187, 7189, 7196-7197, 7202, 7204-7206, 7392, 7560 DJN212-223, 225, 227-248, 251 TFT149-161, 163-167
3412E	TGC204-205, 208, 212-213, 220, 222, 225, 227-232, 235-236, 238-239, 243, 247

PARTS NEEDED

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Qty	Part Number	Description
1	1084420	GASKET-BYP C

ACTION REQUIRED

Disable engine from starting
If fuel inlet and fuel return lines are not capped, do so, or connect hoses together to eliminate fuel spillage.
Loosen two 7/16" bolts under bracket supporting Deutch connector (bolt holes have slotted openings
Remove bracket and sit aside far enough to remove bolts and oil tube on fuel pump housing for servo valve.
remove 11/16" fitting on oil line to housing and rotate fitting 90 degree toward inside of engine.
Remove two 7/16" bolts from servo housing.
Carefully remove top of housing, servo valve, and spring (gasket part # 1084420)
Check for debris in servo valve. If none present reassemble in reverse order. If debris present continue.
Replace top of servo housing only - do not install valve or spring.

10. Connect 1/2" ID x 4' long hose to 90 degree fitting out of valve housing 11. Use cheesecloth or suitable material to strain oil. 12. Place end of hose in bucket and crank over engine long enough to wash through 1 to 2 gallons of oil. Checked strained oil for debris - if present repeat until strained oil shows no signs of debris.

13. Remove cover and reinstall valve and spring and reassemble in reverse order. Be certain to tighten 9/16" jam nut on 90 degree fitting on oil line out of servo valve housing.

Note: If package does not have batteries installed, using battery pack, connect + to starter solenoid battery post and -to starter motor battery post. Jumper wire from wire #25 on solenoid to battery positive post on solenoid to crank engine and check for debris as stated above.

OWNER NOTIFICATION

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%	1.0	0	0	0	0
NOTE: This is a 1.0 hour job. NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report

PARTS DISPOSITION

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

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

Attach. (1-Owner Notification)

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

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR CHECKING AND FLUSHING DEBRIS FROM THE SERVO HOUSING

MODELS INVOLVED - CERTAIN 3412 ENGINES

Dear Caterpillar Product Owner:

The servo valve needs to be inspected for debris on the products listed below. Debris in the oil line may cause an overspeed condition. 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 August 11, 2005 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 August 11, 2005 Service Letter