Spring Force Increased On Freewheel Valve Spool In Control Valve Group For Front Wheel Drive System {4352}
Usage:
143H (1AL),
163H (5AK) Motor Graders
Description of Change: Two new springs, on the freewheel valve spool, increase the force of the freewheel valve to turn off (freewheel) the front wheel drive system when the pressure is low.
Adaptable To: New 126-1445 and 126-1446 Springs replace the former 8J-3831 Spring used on the freewheel valve spool in the 6E-3906 Control Valve Group.
The new springs are effective with 143H (1AL28) and 163H (5AK23) Motor Graders and are adaptable to all earlier machines.
6E-3906 Control Valve Group (1) New 126-1445 Spring. (2) New 126-1446 Spring.
Caterpillar Information System:
1996/12/16 Fire Extinguisher Bracket Now Used {7254,7419}
1996/12/16 New Procedure To Calibrate Tensioner Warning Switch {4197}
1996/12/09 Tools Used To Remove And Install Both Sizes Of Camshaft Bearings In 3500B Engines{1211,0701}
1996/12/09 124-9057 Guide (Swirl) Collar Quickly Installs Valve Guides To Proper Height{1104,0701}
1996/12/09 Use 6V-7920 Spanner Wrench To Remove And Install 5P-5813 Pinion Nut{3254,4056,0602}
1996/12/09 124-0662 Impact Socket For Removing And Installing Cylinder Head Bolts{1100,0602}
1996/12/09 Electronic Control Training Aid{0713}
1996/12/09 Use 4C-9416 Wrench Assembly To Remove Asphalt Screed Mounting Nuts{6640,0602}
1996/12/09 Thicker 1U-9646 Pusher And 1U-9647 Pusher Make XT-3 Hose Assembly Easier{0684}
1996/12/09 Tooling Plates Simplify Swashplate Neutral Adjustment On Sauer Sunstrand Hydraulic Pumps; 4C-8498 Plate (42 CC Pumps - Drum Propel), 4C-9419 Plate (55 CC Pumps - Axle Propel), 127-5653 Plate, Neutral (75 CC Pumps), 127-5654 Plate, Neutral (100 CC Pum
1996/12/09 Remove And Install Threaded Glands On Hydraulic Cylinder Using 9U-7868 Spanner Wrench Group, 9U-7869 Spanner Wrench Group, Eleven Adapter Plates (See Chart B){5456,0738}
1996/12/09 Rotate Crankshaft On 3114, 3116 And 3126 Engines Using 9U-6943 Gear Shaft Housing Assembly Or 9U-7336 Gear Shaft Housing Assembly {1202,0701}
1996/12/16 Retarder Lamp Now Used As Brake Lamp On Some Off-Highway Trucks {3120,3121,4280,4250}
1996/12/16 Higher Viscosity Oil Should Be Used In Certain Final Drives And Differentials {4070,0645}
1996/12/16 New Shaft Assembly Used In The Steering Gear Groups To Improve Service Life {4301,4300}
1996/12/16 Serial Number Prefix Changes On Torque Converters {3101}
1996/12/16 New Outer Wheel Bearing Cone Larger To Give Improved Service Life {4201,4208,4215}
1996/12/16 Lubricating The Brake Unit During Assembly Can Eliminate Brake Plunger Sticking {4251,4262}
1996/12/16 Clamp Relocation In The Steer Lines Group Improves Service Life Of The 122-2229 Tube Assembly {4304}
1996/12/16 Alternative Brake Caliper Seal Kits Can Withstand Extreme Operating Temperatures {4256}
1996/12/16 New Steering Metering Pump Group Gives Smoother Steering Operation {4312}
1996/12/16 Correct Ride Height Settings And Adjusting Procedure Must Be Used {7201,7213}
1996/12/16 Exhaust Outlet Tubes Used On Exhaust Heated Truck Body Groups To Keep Exhaust Soot And Condensation Off Rear Lamps {7258}
1996/12/16 Improved Fuel Sender Assembly Available {7481}