1994/02/07 Caterpillar

New Piston Body Has Improved Bonding Between Iron Band And Aluminum Body{1214}

Usage:

375 (8XG, 8WJ, 6NK, 6RL, 9WL, 1JM),
245B (6MF, 1SJ),
245D (7ZJ, 4LK) Excavators;
RM-350 (5FK) Reclaimer Mixer;
SM-350 (1RM) Stabilizer Mixer;

Description of Change: A new improved piston body is used in the above machines and engines. The new piston body has improved retention of the iron band (ring carrier) to the aluminum body. This will help prevent separation of the iron band from the aluminum body.

Adaptable To: The new 113-6045 Piston Body Assembly is a direct replacement for the former 7E-0489 Piston Body Assembly. The former piston body assembly is canceled. The new 113-6045 Piston Body Assembly is in effect with the 3406B Engine 11N8640 in Caterpillar Machines.

NOTE: If a former 7E-0489 Piston Body Assembly fails due to a separation between the iron band and the aluminum body, replace all six pistons with new 113-6045 Piston Body Assemblies.

The new piston body assembly is adaptable to the following machines powered by 3406 Machine Engines 11N1-8639:

245B Excavators 6MF513-Up and 1SJ713-Up.

245D Excavators 7ZJ1-Up and 4LK1-UP.

375 Excavators 8XG1-Up, 8WJ1-Up, 6NK1-Up, 6RL1-Up, 9WL1-Up, and 1JM1-Up.

RM-350 Reclaimer Mixer 5FK1-Up.

SM-350 Stabilizer Mixer 1RM1-UP.

Caterpillar Information System:

1994/02/07 New Magnetic Drain Plug For Vibratory Bearing Reservoir Provides Early Warning Of Wear{6606}

1994/02/07 Suspension Control Valve Mounting Group Bolt Torque Specification Is Reduced To Prevent Control Valve Sticking And Scuffing{7214}

1994/02/07 Sump Guard Assembly (Crankcase Guard) Is Deeper And Has Thicker Material To Improve Clearance And Resist Bending{7151}

1994/02/07 New Wheel Bearing Adjustment Procedures{4208}

1994/02/07 New Pinion And Seal Assembly Replaces The Former Carbon Seal{3280,3254,3250}

1994/02/07 Cover Assembly Protect Hydraulic Tank Sight Glasses{5056}

1994/02/07 New Radio Mount Available For B Series Backhoe Loaders Equipped With Air Conditioning{7338}

1994/02/07 New Radiator Hose Clamp Allows Easier Tightening{1380}

1994/02/07 Lock Valve Group With A Relief For Right Blade Lift Cylinder Is Available On Motor Graders{5102,5100}

1994/02/07 New Hose Clamps Provide Improved Clamping{1058}

1994/02/07 Screened Fitting for Implement Motor Case Drain Return Line Available{5720,4351,4921}

1994/01/31 Automatic Shut-Off Systems Not Recommended on Mobile Earthmoving Equipment {7418,7403}

1994/02/07 Longer Grease Hose Assembly Used In Fan Belt Tightener Groups{1358,1359}

1994/02/07 12 And 24 Volt DC Work Lights Are Available{0600}

1994/02/07 New Turbocharger Groups And New Turbocharger Cartridge Groups Have Improved Thrust Bearing And Turbine Ring Seal{1052,1053}

1994/02/07 Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}

1994/02/07 Fuel Injection Pump Improvements{1251}

1994/02/14 Multipurpose Tractor Oil (MTO) Is Usable In All Challenger Implement Hydraulic And Combined Implement And Steering Hydraulic Systems{5068,5050,5450}

1994/02/14 Air-To-Air Aftercooler Assembly Mounting Brackets Improved{1063}

1994/02/14 Engine Coolant Temperature Gauge May Run High{7400,7453}

1994/02/14 Thicker Retaining Ring Is Available For Use With CAT® GraderBit Assemblies{6151,6150}

1994/02/14 Publications Available For Off Highway Truck Retrofits{1290,1631,1900,3100,3150}

1994/02/14 Improved Wheel Bearing Cone Anti-Rotation System Prevents Wheel Bearing Cones From Rotating On The Axle Housing{4208,4234}

1994/02/14 Shorter Stud Used To Improve Sealing Between The Radiator Cap Assembly And Filler Adapter{1382,1353}