1997/09/29 Caterpillar

New Cylinder Groups And Tube Assemblies For Stabilizers With Flip Over Pads{5468}

Usage:

446 (6XF) 446B (5BL) Backhoe Loaders

Description of Change: New stabilizer cylinder groups replaced the former stabilizer cylinder groups to provide clearance for the flip over pads used with the stabilizers.

Each new cylinder group has a new tube assembly.

Adaptable To: Both new stabilizer cylinder groups and new tube assemblies were effective with 446B (5BL1126) Backhoe Loader. 446B (5BL1500) Backhoe Loader was excluded.

The new stabilizer cylinder groups and new tube assemblies are adaptable to 446 (6XF1-Up) and 446B (5BL1-1125) Backhoe Loaders, including 446B (5BL1500) Backhoe Loader.

Stabilizer cylinder groups and tube assemblies.

The former 9T-2993 Cylinder Group (RH) and former 9T-2994 Cylinder Group (LH) can be upgraded as follows:

Former 9T-2993 Cylinder Group (RH) Upgrade

1. Replace former 105-4519 Cylinder Assembly with new 132-9703 Cylinder Assembly.

2. Replace former 9T-4343 Tube Assembly with new 132-3758 Tube Assembly.

Former 9T-2994 Cylinder Group (LH) Upgrade

1. Replace former 105-4520 Cylinder Assembly with new 132-9702 Cylinder Assembly.

2. Replace former 9T-4344 Tube Assembly with new 132-3757 Tube Assembly.

Caterpillar Information System:

1997/09/29 New Flushing Valve Group Eliminates Possible Shut-Down Of All Wheel Drive System{5050}

1997/09/29 Strap Added To Retain Torsion Spring In Steering Control Group{4343}

1997/09/22 New Piston Crown Improves Service Life{1214}

1997/09/22 Improved Piston Crown Assembly Used In The Rod And Piston Group{1214}

1997/09/22 New Kit Extends Life Of Rolling Hoses{6460}

1997/09/22 Correction To Lift Arm Repair Chart{6107,6119}

1997/09/22 Transmission Control Switches Serviceable{3171}

1997/09/22 Hydraulic Control System Improvements Reduce Retarder Response Time{1019}

1997/09/22 Larger Clamps Improve Hose Installation In 124-8216 Water Lines Group In 793C Off-Highway Trucks{7554}

1997/09/22 Additional Relay Valve Used In Automatic Retarder Arrangements To Improve Automatic Retarder Control (ARC) System Reliability{4005,4133,3120}

1997/09/22 Improved Braze Joint On Brake Oil Coolers Reduce Possibility Of Leaks{1365}

1997/09/22 Retrofit Kits Available For Rear Axle Lube And Filtration{4051,3258,3260,7601}

1997/09/29 Improvement To Air Conditioning Lines Group In The 793C Off-Highway Trucks For Reduced Engine Removal And Installation Time{1808,1809}

1997/09/29 Torque Converter Tubing Improvement Provides Clearance {3103}

1997/09/29 Hose Assembly Change To The Front Brake Breather Lines Group{4257}

1997/09/29 Service Manual Modules; SENR8609, "Schematic 769D Truck And 771D Quarry Truck Electrical Schematic". SENR1418, "Schematic 773D Truck And 775D Quarry Truck Electrical Schematic". These Service Manual Modules Are Found In Service Ma

1997/09/29 Sensor Group-Suspension Control Is Improved With Increased Reliability And Moisture Resistance{1400}

1997/09/29 New Hoist Cylinder Seals And End Cap Now Available For Service Repair{5102}

1997/09/29 New Metal Guards Prevent Debris From Entering Into Cab{7310}

1997/09/29 Gussets Are Added To Oil Pan Assemblies{1302}

1997/09/29 Bumper Spring Prevents Over Travel Of Handle For Pilot Valve Group{5059}

1997/09/29 Handling Instructions For Water Pumps{1361}

1997/10/06 Fuel Tank Filler Screen Available{1273,1710}

1997/10/06 Higher Capacity Fan Belts Now Used{1350,1356,1359}