FRAME AS 3643800 - Caterpillar

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.
This Program must be administered as soon as possible. When reporting the repair, use "PI3054" as the Part Number, "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 "PI3054" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
This Revised Service Letter replaces the August 27, 1997 Service Letter. Problem, Affected Product, Parts Needed, and Action Required.
Completion Date
February 28, 1998Termination Date
August 31, 1998Problem
New software for the VIMS needs to be installed on 994 Loaders. The existing software can leave the system inoperable or give inaccurate readings and failure warnings. When installing the new software, an air pressure sensor used to monitor the system air pressure will also need to be changed. The existing sensor is not accurate enough to work correctly with the new softwear.
Affected Product
Model & Identification Number
Group 1
994 (9YF49, 9YF97, 9YF136, 9YF155, 9YF173, 9YF177-194, 9YF196-199, 9YF201, 9YF208)
Group 2
994 (9YF75, 9YF202, 9YF203)
Parts Needed
Dealers will need to order parts for this Program.
1 - 1415746 Sensor Group (required on all)1 - 1472046 Source Code Software (required on all) Select only one Configuration Software per Affected Product. The machine will need one of the following VIMS configurations depending on languages needed, lift arrangement, and autolube arrangement.
1 - 1533878 Configuration Software (English/Spanish - High Lift)1 - 1533879 Configuration Software (English/Spanish - Standard Lift)1 - 1533880 Configuration Software (English/Spanish - High Lift w/o Autolube)1 - 1533881 Configuration Software (English/Portuguese - High Lift)1 - 1533882 Configuration Software (English/Portuguese - Standard Lift)1 - 1533883 Configuration Software (English/Swedish - High Lift)1 - 1533884 Configuration Software (English/Swedish - Standard Lift)Action Required
Group 1
The current VIMS air pressure sensor may be inaccurate by 12 to 15 psi. As a result, this can cause the following fault messages to be displayed on the VIMS message center without an actual problem