A Drain Plug Needs To Be Installed In The Idler Hub Of Certain Challenger 65 And Challenger 75 Tractors Caterpillar

A Drain Plug Needs To Be Installed In The Idler Hub Of Certain Challenger 65 And Challenger 75 Tractors

Usage:

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Caterpillar: Confidential Yellow

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 Program must be administered as soon as possible. When reporting the repair, use "PI3574" as the Part Number, "7751" as the Group Number, "56" as the Warrdnty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3574" 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 Program is to be done in conjunction with the January 25, 1992 Service Letter - PI1186 and the January 27, 1992 Service Letter - PS4715.

NOTE: This Revised Service Letter replaces the January 26, 1992 Service Letter. Changes have been made to the Affected Product.

Completion Date

July 31, 1992

Termination Date

January 31, 1993

Problem

A drain plug needs to be installed in the idler hub of certain Challenger 65 and Challenger 75 Tractors to permit draining and refilling with oil while the idler is installed on the tractor. In addition, the bearings, spindles and hubs will be inspected/replaced and a torque preload of 135 N·m (100 lb ft) will be used for assembly.

Affected Product
Model & Identification Number

Ch 65 (7YC1-1937,7YC1939-1941,7YC1943-1951,7YC1953-1956,7YC1958,7YC1959,7YC1961,7YC1963-1965,7YC1967-1971,7YC1973,7YC1975-1978,7YC1980,7YC1982,7YC1984-1994,7YC1996--2002,7YC2004-2007,7YC2009,7YC2011-2020,7YC2023,7YC2028,7YC2030-2035,7YC2037,7YC2040,7YC2042-2046,7YC2050,7YC2051,7YC2054-2056,7YC2061,7YC2064,7YC2065,7YC2068,7YC2069,7YC2071-2077,7YC2079-2082,7YC2086-2088,7YC2090-2093

Ch 75 (4CJ1-335,4CJ337-340,4CJ342,4CJ344-348,4CJ350-352,4CJ354-356,4CJ375-378,4CJ380-394,4CJ396,4CJ397,4CJ399-402,4CJ404,4CJ407-435)

Parts Needed

Dealers will need to order parts for this Program.

2- 056865 Lockwasher (Use as required)

2- 6D7690 Cup

2- 6H3568 Cup

2-7K0394 Cone

2- 5P3723 Cone

2- 2R8942 Plug

2-8R0625 Spindle (Use as required)

2-8R5037 Hub Assembly (Use as required - includes cups)

2-3W5687 Hub Cap (Use as required)

2- 3W6998 Gasket

2- 9W6645 Seal Group

Action Required

Parts Stock

Rework all 8R5037 Hubs in parts stock.

Affected Product

The January 20, 1992 Service Magazine article "Improved Front Idler Hub Assembly" describes the update and gives the procedure for installing the drain plug and the revised preload used for assembly.

If it is necessary to install new bearings, spindles and/or hubs, refer to the Service Manual.

Owner Notification

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

Service Claim Allowances

Parts Stock

Submit one claim for reworking all 8R5037 Hubs in parts stock. A maximum of 1 hour per hub will be allowed for the rework.

Affected Product

NOTE: This is an 8-hour job, 5 hours for undercarriage removal and installation, and 3 hours for reworking the hubs.

NOTE: It is recommended that this Program be implemented at the same time as the January 25, 1992 Service Letter - PI1186 and the January 27, 1992 Service Letter - PS4715.

NOTE: U.S. and Canadian Dealers Only - This Program does not qualify for a Type 2 SIMS Report.