1997/01/27 Caterpillar

C-V (U) Joint Life Extended Through Correct Operation Of The Differential Lock {3274,2453,3259,3260,3264}

Usage:

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

The machines listed above have a differential lock feature. The differential lock is installed on the front drive axle only. This feature enables improved traction in a situation when one drive wheel is in a soft spot and has no traction. The differential lock allows additional traction to be obtained from the drive wheel on firm ground. This enables the machine to pull through the soft spot. Proper operating procedures will extend the life of the C-V (U) joints. The following chart displays the part number of the C-V (U) joint for specific machines.

Proper Operation Of The Differential Lock

* Use only during off road operations, when extra traction is needed.

NOTE: If wheel spin has already developed, release pressure from the accelerator and allow the engine speed to fall sufficiently to stop wheel spin.

* Stop the wheels, engage the diffeerential lock and driver straight forward or reverse.

NOTE: Keep steering maneuvers to a minimum when the differential lock is engaged. Steering maneuvers with the differential lock engaged can result in machine damage.

* Never steer at low speeds.

* Use at only at low speeds.

* As soon as extra traction is not required, stop the machine to be sure the differential lock disengages.

NOTE: Some rental fleets have relocated the differential lock switch from the floor to the dash panel. The differential lock feature can be disabled by disconnecting the switch or the solenoid.

Caterpillar Information System:

1997/01/27 Repair Centers For Sonic Grade Sensors Established {5645}

1997/01/27 New Control Lever Group Requires Spacer {1265,3209,5258}

1997/01/27 Hydraulic Hose Retention For Vibratory And Drum Propel Systems Improved {5057}

1997/01/27 Verify Offset Dimension When Ordering New Wheel Assembly {4209,4202}

1997/01/27 New Brake Bleeding Procedure {4250,4293}

1997/01/27 Solution To Cab Window Fogging {1818,7309,7310,7320}

1997/01/27 Special Instruction REHS0006 Available For Installation Of Output Yoke And Screen Housing On Remanufactured Transmissions {3159,3002}

1997/01/27 Remote Lubrication Lines Used To Lubricate Upper Hoist Cylinder Pins {7510,7258,5102}

1997/01/27 Parts Service Block Replaces Nuts To Provide Better Bolt Retention For The Spillplate Assembly In The Body Group {7258}

1997/01/27 New Parts Service Pad And Shim Replaces The Buffer In The Dump Body Group {7258}

1997/01/27 New Hoist Control Lever And Handle Improves Operator Comfort {5063}

1997/01/27 New Hose Assembly Improves Hose Routing And Prevents Damage Due To Contact With Steel Tubes {3154}

1997/01/27 New Replacement Procedure For Hydraulic Hoses Inside The Telescopic Material Handler Boom {5057,6460}

1997/01/27 VIMS Exhaust Temperature Sensor Is Improved {7601,1919}

1997/01/27 Use Of Windows Write (Or Notepad) And Paintbrush For Taking Field Notes {0785,7601}

1997/01/27 Field Repair Of Single Wire Breaks In Harnesses {1408}

1997/01/27 Premachined Valve Seat Inserts And Precision Valve Guide Increase Valve Life {1103,1104}

1997/01/27 Points To Remember When Replacing A Viscous Crankshaft Damper Assembly With A Rubber Crankshaft Damper Assembly {1205}

1997/01/27 Checking The Alignment Of Timing Gear Marks {1206}

1997/01/27 Engine Oil Recommendation For 3408E (99C) And 3412E (80M) Engines {1318}

1997/01/27 125-0200 Camshaft Pilot To Remove And Install 106-4584 Camshaft {1202}

1997/01/27 128-3102 Tap Assembly And 128-3104 Stud Puller To Remove Injector Sleeves With Oversized Lower Bore {1125}

1997/01/27 Cylinder Head Stress Plate Used During Cylinder Bore Honing And Measurement {1223}

1997/01/27 127-1069 Timing Pin Used To Set Piston At 100° BTDC When Testing And Adjusting Fuel Systems {1250}