Usage:
SEBE7463-01
November 23, 2000
(Revised January 2001)
U-300
AU-180
S-138
O-247
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Safety |
THE SPIN ON FUEL FILTER BASE ON CERTAIN 3508, 3508B, 3512, 3512B, 3516, 3516B DIESEL STANDBY ENGINES NEEDS TO BE INSPECTED |
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1262 |
PI10039 |
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NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI10039" 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 "PI10039" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
NOTE: This Revised Service Letter replaces the November 23, 2000 Service Letter. Changes were made to the Parts Needed.
PROBLEM
The 1N3789 Fuel Filter Base on certain 3500 Diesel Standby Engines may have incorrect stud height. If the stud height is incorrect, the "spin on" fuel filter may fall off of the filter base. The stud height will need to be measured. If the stud height is not adequate, the filter base will need to be replaced.
AFFECTED PRODUCT
MODEL
IDENTIFICATION NUMBERS3508 23Z7725, 7730
3508B 4GM616-621
3512 24Z9758, 9764-9765, 9768-9770, 9775-9776, 9778-9780, 9782
3512B 6WN622-629
3516 25Z6888, 6890, 6900, 6902
3516B 6HN948-957, 959, 964, 966-967, 972-973, 980-981, 985
PARTS NEEDED
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QUANTITY |
PART NUMBER |
DESCRIPTION |
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1 |
O-Ring (seal) |
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1 |
Base Assembly |
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1 |
Gasket |
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1 |
Gasket |
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2 |
Seal |
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1 |
Seal |
ACTION REQUIRED
See the attached Rework Procedure.
OWNER NOTIFICATION
U.S. and Canadian owners will receive the attached Owner Notification.
SERVICE CLAIM ALLOWANCES
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Service Claim Allowances for Inspection |
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Caterpillar |
Dealer Suggested |
Customer Suggested |
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Parts |
Labor Hrs. |
Parts |
Labor Hrs. |
Parts |
Labor Hrs. |
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0 |
1 |
0 |
0 |
0 |
0 |
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Service Claim Allowances for Replacement of the Filter Housing (if required) |
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Parts |
Labor Hrs. |
Parts |
Labor Hrs. |
Parts |
Labor Hrs. |
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100% |
1 |
0 |
0 |
0 |
0 |
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Note: This is a 2-hour job if replacement is necessary. |
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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)
(2-Rework Procedure)
COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
Safety - THE SPIN ON FUEL FILTER BASE NEEDS TO BE INSPECTED
MODELS INVOLVED - CERTAIN 3508, 3508B, 3512, 3512B, 3516, 3516B DIESEL STANDBY ENGINES
Dear Caterpillar Product Owner:
The spin-on fuel filter base needs to be inspected on the products listed below. The stud height may be incorrect which can cause the spin-on fuel filter to blow off of the filter base and result in a fuel leakage hazard. 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 November 23, 2000 when scheduling this service.
We regret the inconvenience this may cause you, but urge you to have this service performed for your added safety and satisfaction.
Caterpillar Inc.
Identification #(s)
Attached to November 23, 2000 Service Letter
Rework Procedure
Verification of Stud Height
- Shut off the fuel supply to the engine.
- Before removing the fuel filter, have a container ready to catch the fuel that will drain from the fuel system.
- Remove the "Spin On" Fuel Filter. A filter wrench may be required.
- Keep the fuel filter as it will be required for re-installation.
- Measure the threaded nipple from the flat surface on the bottom of the filter base to the end of the nipple. See Illustration #1
- Check the stud height measurement from step #5 with Table #1
- If the stud height is falls in the "Unacceptable" Range, the fuel filter base must be replaced. See fuel filter base replacement instructions.
- If the stud height is falls in the "Acceptable" range, the fuel filter should be reinstalled.
- Return fuel flow to the engine.
- Start the engine and check for leaks.
Illustration #1
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Table #1 - Stud Height Measurement |
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Acceptable |
Unacceptable |
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Stud Height |
23.3 mm & up |
Less than 23.3 mm |
Replacement of 1N3789 Fuel Filter Base
- Remove the fuel priming pump or cover from the base.
- Loosen the fuel lines flowing into and out of the filter base.
- Remove the fuel line adapters and the sensor (or plug) from the filter base before removing the filter base from the engine.
- Remove the two mounts bolts, nuts and washers that mount the filter base. The filter base can then be removed.
- Install a new 1N3789 Fuel Filter Base. Using the existing bolts, nuts and washers.
- Reinstall the fuel line adapters and the sensor (or plug) with a new 3J1907 (adapters) and 6V5048 (sensor/plug) O-ring seals.
- Reinstall the fuel lines.
- Re-install the fuel priming pump or cover with new 9Y8589 and 9Y6094 Gaskets.
Note
: The old 1N3789 Fuel Filter Base is not repairable and must be scrapped.9) Re-install the fuel filter.
10) Return fuel flow to the engine
- Start the engine and check for leaks.