1997/03/31 Caterpillar

Drum Drive Plate Wear {6605}

Usage:

CP-323C (6DM1-148),
CS-323C (1EN1-128) Vibratory Compactors

Illustration 1.
Side View Of Drum (A) 119-4321 Drive Plate. (B) Drum drive stop plates. (C) Isolation mount bolts.

In some applications, 119-4321 Drive Plate (A) can contact drum drive stop plates (B) with enough force to cause wear on the drive plate.

When repairing a drum assembly, inspect 119-4321 Drive Plate (A). Replace the drive plate if there are any cracks at the holes for isolation mount bolts (C). Also replace the drive plate if it is worn to the bolt heads of isolation mount bolts (C).

To avoid future wear to the drum drive plate, remove 25.4 mm (1.00 in) of material from each end of drum drive stop plates (B).

NOTE: Drum drive stop plates (B) may also be completely removed to prevent further wear to drive plate (A).

Caterpillar Information System:

1997/03/31 Procedure For Aligning Front Suspension Frame Group With The Output Transfer Gearbox {7200}

1997/03/31 Special Instructions REHS0019 And REHS0020 Available For Installation Of Differential Thrust Stops {3258}

1997/03/31 New Thrust Washer Eliminates Use Of Retaining Screws In Final Drive; Eliminates Possibility Of Damage From Loose Retaining Screws {4051}

1997/03/31 Bolt Lengths Changed In Oil Cooler Lines Group For Proper Fastening {1365,7554}

1997/03/31 "Higher Viscosity Power Train Oil" Sticker Has Been Added To The Operation & Maintenance Manual {0645,4070}

1997/03/31 Differences Between The B-Series Backhoe Loader And The C-Series Backhoe Loader Torque Converter Temperature Gauge {7477,7450}

1997/03/31 Filler Cap Assembly For Backhoe Loaders {1107,1316}

1997/03/31 New Control Valve Groups For Attachments Have Stronger Valve Bodies {5054,5051}

1997/03/31 Production Improvements To Cab Rear Window {7301,7310}

1997/03/24 New VIMS Service Manual Is Available {7601}

1997/03/24 High Strength Screws Retain Pump And Motor Retraction Plate For Rotating Pump Groups {5431,5058,5070}

1997/03/24 Exhaust Leaks Affect The 100-3055 Sensor {7601}

1997/03/31 Repair Centers For Topcon Sonic Grade/Slope Sensors Established {5645}

1997/03/31 Improved V-Belt For Operation Of Compressor System {1802}

1997/03/31 New Transmission Harnesses With Revised Grounding Now Used To Increase Service Life {3168,3030}

1997/03/31 New Shaft Assembly Used In The Steering Gear Groups To Improve Service Life {4301,4300}

1997/03/31 Common Services Software Install Procedures {7601}

1997/03/31 Information System Builder (ISB), WIN32s, And Display Driver Compatibility {7601}

1997/03/31 Tools For 346D Jake Brake {1119,1119}

1997/04/07 Improved Drivewheel Designs Available {4199}

1997/04/07 Improved Valve Stem For Articulation And Ripper Control Valve Groups Increase Performance At Initial Start-Up {5351}

1997/04/07 Improved Adjustment Procedure For Extendable Sticks {6509,6533}

1997/04/07 New Integral Seal And Oil Pan Sections Reduce Possibility Of Oil Leaks At Oil Pan "Tee" Joint {1302}

1997/04/07 New Braided Steel Ether Lines Available For Increased Durability {1456}