1998/06/08 Caterpillar

Improved Front Lines Group Increases Reliability {5057}

Usage:

330B L (3YR, 6DR, 4RS, 5LS),
330B LN (5LR) Excavators

Description of Change: New hose assemblies replace the former tube assemblies in the front lines group. New mounting hardware is also added to attach the hose assemblies. The new hose assemblies are more reliable and decrease the leaks, component failure, and bolt loosening caused by vibration.

Adaptable To: The affected serviced component changes to the 125-8066 Front Lines Group (not serviced) are listed in the chart. They are effective with 330B L (3YR707-Up, 6DR2040-Up, 4RS371-Up) and 330B LN (5LR408-Up) Excavators. They are adaptable to 330B L (3YR1-706, 6DR1-2039, 4RS1-370, (5LS1-Up), and 330B LN (5LR1-407) Excavators. The chart lists the affected serviced components. The illustration shows the component locations.

Top and right side views of 125-8066 Front Lines Group.

Caterpillar Information System:

1998/06/01 Manufacturing Process Improvement Increases Reliability Of Speed Sensors {1900}

1998/06/01 Proper Checking For Refrigerant Leaks Ensures Maximum Service Life Of Refrigerant Compressor {1802,1809,7320}

1998/06/01 Effectivity Of Current Production Water Pump Group On Caterpillar Machines Powered By A 3406C Machine Engine {1361}

1998/06/01 Preload Adjustment Changed For Shaft Bearings And Barrel Face In Piston Motors {5058}

1998/06/01 Uploading VIMS Source And Configuration Software {7601}

1998/06/01 Information System Builder V1.2 May Experience An "Operating System Error" {7601}

1998/06/01 New Hardened Locknut Improves Retention Of Impeller On Piston Pump Shaft {5070}

1998/06/01 Installation Of Tow Hooks To Carbody {7103,7062}

1998/06/01 Shims Prevent Binding Of Rotor In Swivel {5060}

1998/06/01 New Improved Alternator Guard Assembly {7168}

1998/06/01 New Duo-Cone® Seals In Track Rollers Improves Corrosion Resistance And Low Temperature Performance {4180,7561}

1998/06/01 Support Literature Is Now Available For Maintaining Air Conditioning And Heating Systems {7300,7304,7309,7320,7337}

1998/06/08 New Seals Used On Mass Excavator Bucket Linkage Joints {6513}

1998/06/08 Improved Fuel Lift Pump For 3054 Engines {1250,1256,1258}

1998/06/15 New Water Pump Available{1350,1361}

1998/06/15 New Air Intake Pipe Assembly Improves Engines{1050,1071}

1998/06/15 Rubber Seals Protect Fuel Injectors Against Rust{1252,1254}

1998/06/22 Improved Electrical Harness Connections Improve Service Dependability For Battery And Wiring Group {1408}

1998/06/22 Center Track Guide Guard Is Available {4151,4177}

1998/06/22 New Split Ring For O-Ring Seal On Plugs In Implement Control Valve Improves Reliability Of Seal In High Presssure Passages {5051}

1998/06/22 New Springs In The Windshield Group Improve The Operation Of The Windshield {7340}

1998/06/22 A New Windshield Assembly Improves The Operation Of The Windshield {7340}

1998/06/22 Revised Service Manual, SENR6614-02, Payload Control System (PCS) Available {0374}

1998/06/22 New Cast Iron Valve Guide And New Exhaust Valve With Chrome Plated Stem Will Help Prevent Early Hour Exhaust Valve Sticking In 3304 And 3306 Machine Engines {1104,1105}