1996/04/29 Caterpillar

New Rear Crankshaft Seal Improves Service Life{1161}

Usage:

245B (6MF),
245D (4LK),
375 L (1JM),
5080 (6XK) Excavators;
651E (88Z),
657E (90Z, 91Z) Wheel-Tractor Scrapers;
772B (64W) Off-Highway Tractors;
775B (7XJ) Quarry Trucks;
990 (7HK),
992D (7MJ) Wheel Loaders

Reference: This article replaces the article with the same title on Page 3 of the August 7, 1995 Service Magazine.

Description of Change: The former rear crankshaft seal has been replaced by a seal made of a different material. The new seal will provide increased service life. A baffle is used with the new seal to help prevent transmission fluid from being transferred to the engine oil.

Adaptable To: The new 2W-1734 Crankshaft Seal Group must be used with a 1W-3136 Baffle. This change is effective with 3406 (11N13608) and 3412 (73W16699) Machine Engines.

Caterpillar Information System:

1996/04/29 Integral Connector Now Used On The Air Conditioning Condenser Fan Motor Relay Assembly{1408,7320}

1996/04/29 New Seal Kit Available For Service Repairs To The Leg Cylinders{7224,7201}

1996/04/29 Indicator Relocated To Increase Service Life{7452,7497}

1996/04/29 New Cover Assembly Increases Leg Room{4310}

1996/04/29 Special Instruction SEHS9948 Available For Rear Axle Lubrication And Filtration Retrofit For 793 And 793B Off-Highway Trucks.{3278}

1996/04/29 New Operator Compartment Door and Side Panel Seal Improves Sealing and Reduces Cab Noise{7301,7308}

1996/04/29 New Gear Has Improved Life{4050,4055,4059}

1996/04/22 New Stronger Three-Point Hitch Used{7120}

1996/04/22 Special Instruction, SEHS9885, Available for Installation of 104-2315 (US) & 108-1952 (UK) Ground Speed Sensor Group{0374,7493}

1996/04/22 Service Parts Are Available For 6E-6312 And 9T-6148 Accumulator Groups{5077,4263,4331}

1996/04/15 New Element Assemblies Available Within Jacket Water Heater Groups{1383}

1996/04/15 New Engine Valve Cover Gasket Helps Prevent Oil Leaks{1107}

1996/04/29 New Piston Assembly And New Piston Ring Kit Provide Reduced Oil Consumption{1214,1215}

1996/04/29 New Element Assemblies Available Within Jacket Water Heater Groups{1383}

1996/05/06 Cast Duo-Cone Seals Available For Final Drives {4052,7561}

1996/05/06 Service Magazine Special Edition, SEPD0304, Available {0374}

1996/05/06 High Performance Grease Used On Brake Control Linkage {4269}

1996/05/06 Steering Pump Pressure Limiter Logic Plugs Can Be Checked For Proper Torque {4306}

1996/05/06 Improvements To Challenger Agricultual Tractors Air Conditioning Available {7320,7343,7311}

1996/05/06 Wheel Bearing Adjustment Intervals {4201,4208}

1996/05/06 New Body Pivot Pins Now Used {7258}

1996/05/06 Transmission Oil Change Refill And Start-up Procedure {3004}

1996/05/06 Low Profile Exhaust Pipe Available {1061}

1996/05/06 Starter Solenoid Assembly May Need New Terminal {1467,1518}