1997/02/24 Caterpillar

New Telehandler And Material Handler Differential Lock Parts Improve Service Life {3258,3264}

Usage:

RT50 (4XG, 5PF),
RT50SA (8DJ),
RTC60 (4XG, 5PF),
RT60 (5DG),
RT80 (1GJ),
RT100 (1GJ) Telescopic Material Handlers;
TH62 (3LN, 4TM),
TH63 (3NN, 5WM),
TH82 (3JN, 3KN),
TH83 (3RN),
TH103 (3PN) Telehandlers

Reference: Parts Manuals SEBN8600-02, December, 1993, Page 83.

SEBN8601-02, January, 1994, Pages, 120, 121.

SEBP2351-01, January, 1996, Pages 170, 172.

SEBP2352, April, 1995, Page 155.

SEBP2372-00, July, 1996, Page 139.

Description of Change:

Improved differential lock parts are currently being used within the front axle. Parts manuals do not cover these changes.

Adaptable To:

The effected Differential Group numbers are: 8I-4304; 8I-4426; 8Q-2119; 8Q-2421; 097-5182; 127-0776. Should any of the original parts fail, all the new parts listed will need to be installed.

NOTE: Former parts will not be serviced.

NOTE: The axle serial numbers are stamped on the axle. When checking axle serial numbers, prefix letters must be included.

Illustration 1.

NOTE: 143-5376 Ring nuts are also a direct replacement for 097-5187 Ring Nuts used in the rear axle.

Caterpillar Information System:

1997/02/24 New Bevel Gear Set For Telehandler Front And Rear Differential Groups Improves Service Life {3256}

1997/02/24 Wiper Arm Retaining Nut Requires Tightening After Initial Operation {7305}

1997/02/24 Service Manual, Secondary Steering System, Supplemental Information Available {4300,4306,4307,4324,4339,7568}

1997/02/24 New Electronic Transmission Control Group Used {3032,3100}

1997/02/24 New Radiator Group Includes Improved Radiator Core Assembly {1353}

1997/02/24 Correction To Lift Arm Position Sensor Adjustment {0685}

1997/02/24 New Longer Thrust Pin And Bolts Now Used In Rear Suspension Cylinders To Increase Service Life Of Joint {7213,7201,7200}

1997/02/24 Service Parts Are Available For 9T-4785 Accumulator Group {4331,5077}

1997/02/24 New Sight Gauge On Rear Axle Housing Improves Serviceability {3260}

1997/02/24 Thicker Washer Used To Allow Proper Fastening Of Elbow In Transmission Oil Lines Group {3154,3030}

1997/02/24 New ECM Controlled Variable Speed Fan Clutch Group Available {1356}

1997/02/24 Special Instructions Now Available For 793C Off-Highway Truck Assembly Procedure {0374}

1997/02/24 Cold Weather Steering For Telehandlers Improves With Additional Parts {4300,4307}

1997/02/24 Improved Hydraulic Oil Level Gauge For Telehandlers {5057,5050,5056,7479}

1997/02/24 Lubrication Pump Group Container Assembly Now Available As A Serviceable Part {7540,7510}

1997/02/24 Resetting Event Recorder And Service Lamp For VIMS {7601}

1997/02/24 Information Needed For VIMS Support {7601}

1997/03/03 Service Manual, SENR8457, "Challenger 35, Challenger 45, Challenger 55 Agricultural Tractors Tooling And Parts Serviceability For Electrical Connectors" Now Available {0350,1400}

1997/03/03 Revised Service Manual Module For Transmission Electronic Control Available {3168,3030}

1997/03/03 New Line Relief Valves Reduce Cylinder Drift And Improve Performance {5100,5117}

1997/03/03 New Toe Bearings Used In Differential And Bevel Gear Groups To Increase Bearing Service Life {3258}

1997/03/03 Larger Inner Retainer With New Harder Material Now Used In Some Front Wheel Groups {4208,4215,4006}

1997/03/03 Plugs Used In Piston Lifting Hole To Prevent Brake Pack Oil Leakage {4251}

1997/03/03 Gussets Added To Truck Body Canopy To Increase Canopy Life {7302}