1994/02/07 Caterpillar

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

Usage:

Challenger 65C and 75C Tractors

A screened fitting to protect the hydraulic system from contamination from the implement motor case drain is now available. Factory shipped machines are equipped with a plug in the tank port.

The new 109-4028 Connector is adaptable to all Challenger 65C(2ZJ) and 75C(4KK) Tractors. The new parts must be used together and are direct replacement for the former parts.

NOTE: The hydraulic tank on the C Series Challenger Tractors includes an SAE #12 O-ring port for the return of implement motor case drain flow through a low restriction circuit. If the low pressure return port is used, an SAE #12 to #8 6V-1722 Adapter replaces the 9S-4183 Plug. The new 109-4028 Connector is then assembled into the adapter and provides a 13/16in 16 male O-ring face seal end for connection to a 1/2in case drain line.

Illustration 1. 9U1664 Hydraulic Tank Group.

Illustration 2. Section A-A

Caterpillar Information System:

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

1994/01/31 Air Conditioners Use R134a Refrigerant {7300}

1994/01/31 New Transmission Cooler Group Used {1375}

1994/01/31 New Longer Fan Adapter Used On Replacement Engine {1359,1356}

1994/01/31 New Torque For Transmission To Differential And Differential To Rear Housing Bolts {3250,3258}

1994/01/31 New Transmission Shift Solenoid Valve Resists Cracking {3174}

1994/01/31 New Flywheel Eliminates Hydraulic Force On Crankshaft {1156}

1994/01/31 New Service And Parking Brake Group Is Available {4250,4267}

1994/01/31 B Series Backhoe Loader May Experience Brake Chatter {3278}

1994/01/31 Transmission Control Valve Changes On Backhoe Loaders {3150,3152}

1994/01/31 High Torque Steering Motor Available {4136}

1994/01/31 High Torque Steering Motor Available {4136}

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

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 Radiator Hose Clamp Allows Easier Tightening{1380}

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

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

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

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

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

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

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

1994/02/07 New Piston Body Has Improved Bonding Between Iron Band And Aluminum Body{1214}

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