PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAI LED US AND CANADA, CACO, COFA, COSA, CFEL Caterpillar

PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAI LED US AND CANADA, CACO, COFA, COSA, CFEL

Usage:

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Caterpillar: Confidential Yellow

PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAI LED US AND CANADA, CACO, COFA, COSA, CFEL

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.


U-260
A-180
AU-162
O-201
PRIORITY
PARTS STOCK ACTION NEEDED
3067  PI3504
COMPLETION DATE

Termination Date

June 30, 1991  December 31, 1991

Problem

The 4T5110 Housing Assembly (torque converter inlet filter), used on certain
777, 785, and 789 Trucks, needs to be inspected for flash where the tube is
fastened to the base. If flash exists, the oil flow/filtering may be
restricted.

Affected Product

Model Identification Number
777  4YC1325-1357, 1367, 1368, 1379-1409, 1411, 1412, 1414-1417,
1424, 1426-1428, 1439, 1447, 1448, 1450
785  8GB412-437
789  9ZC407-471

Parts Needed

Dealers will need to order parts for this Program.
1 - 4T5110 Housing Assembly-Filter (use if required)

Action Required

***** Parts Stock *****
Inspect all 4T5110 Housing Assemblies-Filter in parts stock for flash at the
tube and base connection. Remove all 4T5110 Housing Assemblies-Filter from
parts stock that have 10 mm (.40") or more of flash around the joint. See
the Illustrations.
***** Affected Product *****
Inspect all 4T5110 Housing Assemblies-Filter on the affected product. If
10 mm (.40") or more of flash exists at the joint, replace the existing
housing with a new 4T5110 Housing Assembly-Filter.
****** IMAGE: SEBE4482.00001.001
CAPTION: Cross Section Of Base - Flash May Restrict Oil
****** IMAGE: SEBE4482.00001.002
CAPTION: Remove/Replace Housing If 10 mm (.40") Or More Flash Exists

Owner Notification

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

Service Claim Allowances

***** Parts Stock *****
Submit one claim for all 4T5110 Housing Assemblies-Filter removed from parts
stock.
***** Affected Product *****
Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
(D/N) (Sell)   (C/L) (Sell)
100% 1 0 0  0 0
NOTE: This is a 1-hour job.

Parts Disposition

Any parts removed (with the exception of cores used for Caterpillar
Remanufactured parts) can be rendered useless and scrapped immediately upon
completion of the repair.
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 - Torque Converter Inlet Filter Housing Needs To Be
Inspected On Certain 777, 785, And 789 Trucks
MODELS INVOLVED - 777, 785, And 789 Trucks
Dear Caterpillar Product Owner:
The 4T5110 Housing Assembly (torque converter inlet filter), used on the
products listed below, needs to be inspected for flash where the tube is
fastened to the base. The repair will be done at no cost to you.
Contact your local Caterpillar dealer immediately and schedule a time to have
this service performed. The repair time for this service is approximately
one hour.
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 December 29, 1990 Service Letter