1997/01/27 Caterpillar

New Control Lever Group Requires Spacer {1265,3209,5258}

Usage:

PR-450 (7DC),
PR-450C (7PJ) Cold Planer

Description of Change: The governor and transmission control lever control groups have been changed. The new levers require a spacer to align the handles with the slot in the control console.

Adaptable To: The former 081-6580 Control Head has been cancelled and replaced by the 130-3444 Lever Group and 129-0820 Spacer. The 130-3444 Lever Group is used in the 1C-4196 Control Group (Governor) and 1C-4197 Control Group (Transmission). The 1C-4196 and 1C-4197 Control Groups are effective with PR-450 (7DC204) and PR-450C (7PJ26). The new 1C-4196 and 1C-4197 Control Groups can be installed on previous machines using the 129-0820 Spacer and 1A-2343 Bolts. See the illustration for the locations and part numbers of the components.

Location of control groups. (1) 1C-4197 Control Group, (2) 1A-2343 Bolt, (3) 3F-9556 Lockwasher, (4) 129-0820 Spacer, (5) 1C-4196 Control Group.

Caterpillar Information System:

1997/01/27 Hydraulic Hose Retention For Vibratory And Drum Propel Systems Improved {5057}

1997/01/27 Verify Offset Dimension When Ordering New Wheel Assembly {4209,4202}

1997/01/27 New Brake Bleeding Procedure {4250,4293}

1997/01/27 Solution To Cab Window Fogging {1818,7309,7310,7320}

1997/01/27 Special Instruction REHS0006 Available For Installation Of Output Yoke And Screen Housing On Remanufactured Transmissions {3159,3002}

1997/01/27 Remote Lubrication Lines Used To Lubricate Upper Hoist Cylinder Pins {7510,7258,5102}

1997/01/27 Parts Service Block Replaces Nuts To Provide Better Bolt Retention For The Spillplate Assembly In The Body Group {7258}

1997/01/27 New Parts Service Pad And Shim Replaces The Buffer In The Dump Body Group {7258}

1997/01/27 New Hoist Control Lever And Handle Improves Operator Comfort {5063}

1997/01/27 New Hose Assembly Improves Hose Routing And Prevents Damage Due To Contact With Steel Tubes {3154}

1997/01/27 Installation Of The Parts Service 7N-3542 Core In The Basic Radiator Assembly {1353}

1997/01/27 New Pressure Switch Assembly Available To Allow The Jake Brake To Release At Low Engine Speed {1119}

1997/01/27 Repair Centers For Sonic Grade Sensors Established {5645}

1997/01/27 C-V (U) Joint Life Extended Through Correct Operation Of The Differential Lock {3274,2453,3259,3260,3264}

1997/01/27 New Replacement Procedure For Hydraulic Hoses Inside The Telescopic Material Handler Boom {5057,6460}

1997/01/27 VIMS Exhaust Temperature Sensor Is Improved {7601,1919}

1997/01/27 Use Of Windows Write (Or Notepad) And Paintbrush For Taking Field Notes {0785,7601}

1997/01/27 Field Repair Of Single Wire Breaks In Harnesses {1408}

1997/01/27 Premachined Valve Seat Inserts And Precision Valve Guide Increase Valve Life {1103,1104}

1997/01/27 Points To Remember When Replacing A Viscous Crankshaft Damper Assembly With A Rubber Crankshaft Damper Assembly {1205}

1997/01/27 Checking The Alignment Of Timing Gear Marks {1206}

1997/01/27 Engine Oil Recommendation For 3408E (99C) And 3412E (80M) Engines {1318}

1997/01/27 125-0200 Camshaft Pilot To Remove And Install 106-4584 Camshaft {1202}

1997/01/27 128-3102 Tap Assembly And 128-3104 Stud Puller To Remove Injector Sleeves With Oversized Lower Bore {1125}