1996/12/16 Caterpillar

Cab Air Conditioner Group Improvements Eliminate Debris {7320}

Usage:

953C (2ZN) Track-Type Loader

Description of Change: A new valve and longer drain tube on the 131-8088 Cab Air Conditioner Group improves draining of the condensate and reduces dirt build up on the engine.

Adaptable To: The new 7T-9793 Valve replaces the former 7G-8271 Air Orifice. The length of the 5P-4829 Tube changes to 1000 mm (39.4 in) from 600 mm (23.6 in). The material of the drain tube has been changed to a clear plastic cylindrical tube from a hard plastic ribbed tube. This change is effective with the 953C (2ZN461) Track-Type Loader and adaptable to earlier machines.

Illustration 1. 131-8088 Cab Conditioner Group.

The 5P-4829 Tube (1) should be routed over the engine and down the side of the engine. Previously, the tube was routed on the back side of the engine.

Caterpillar Information System:

1996/12/16 Longer Tie Rods For Control Valve Groups {5051,5124}

1996/12/16 Cab Improvements Reduce Vibration {7266}

1996/12/16 Spring Force Adjustment Allows Hydraulic Levers To Remain In Detent Position {5051}

1996/12/16 Sprocket Segments Can Be Reworked To Allow Proper Torque {4155}

1996/12/16 Speed And Direction Lever Improvements Prevent Seizing {1901}

1996/12/16 Improved Design Of Decking Blade And Trunnion Caps Provide Increased Service Life {6060,6069}

1996/12/16 Improved Relay Switch Assembly Used To Provide Increased Reliability {1423}

1996/12/16 Front Track Roller Improvement Strengthens Weld Joint {4151}

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}

1996/12/16 Improved Fuel Sender Assembly Available {7481}

1996/12/23 Longer Bosses Increase Blade Assembly Service Life{5057,6060,6051,6071,7167}

1996/12/23 Service Procedures For Special Application Rollers And Idlers Summarized For Track-Type Troctors{4159,4180}

1996/12/23 Rear Axle Oil Level Raised To Improve Axle Lubrication{3013}

1996/12/23 Grapple Rotator Motor Joint Strengthened{5082,6307}

1996/12/23 Cab Heater Efficiency Improved{7304}

1996/12/23 Externally Adjusted Relief Valve Used In Steering Control Valve Group{4307,4322}

1996/12/23 Larger Washer Used With Tube Clamps On Hydrostatic Transmission Prevents Clamp From Loosening{3218}

1996/12/23 New Temperature Sensors Used Which Prevent False Over Temperature Warnings{1906,1400}

1996/12/23 Ride Control Accumulator Recharging Procedure Changed{5081,5077}

1996/12/23 New Sight Gauge Replaces Former Dip Stick For Improved Visibility Of The Front Implement Hydraulic Tank Oil Level{7479}

1996/12/23 New Rotocoil Assembly Used In Engine Cylinder Head Groups{1109}