1984/12/10 Caterpillar

Additional Clamp Reduces Vibration Of Turbocharger Oil Supply Line{1050,1052,1053}

Usage:

3516 Industrial ( 27Z634-Up ),
Marine ( 29Z748-Up ),
Generator Set ( 25Z438-Up ) Engines

Description of Change: A clamp has been added to reduce vibration of a turbocharger oil supply line on 3500 Industrial, Marine and Generator Set Engines.

Adaptable As: The 1N4734 Clamps have been added to the 1W5934 Turbocharger Oil Lines Group. The additional 1N4734 Clamps, when used with the parts shown in the chart, can be adapted to all of the above engines. The new clamps are in effect on 3516 Industrial, Marine and Generator Set Engines (25Z481, 27Z636 and 29Z764).

The clamp is attached to the 4W3049 Bracket that supports the left manifold in the 1W5937 Exhaust Manifold Group and to the 1W3843 Bracket in the 1W5936 Exhaust Manifold Group.

Installation Instructions

To install the 1N4734 Clamps, put the clamps in place as shown in the illustration. Mark the location of the hole. Remove the clamps and drill a 11.0 mm (0.43") diameter hole. Install the clamps and related components.

Location of the new clamps in 1W5934 Turbocharger Oil Lines Group.

Caterpillar Information System:

1984/12/10 Improved Turbocharger Oil Drain Elbows{1307,1052}

1984/12/10 Addition Of Lubricator Will Help Prevent Corrosion In Air Prelube Motors{1319}

1984/12/10 New Seal Used In Alternator Mounting Group{1405,1400}

1984/12/10 A Soot Filter Is Available For Use With Air Cleaners{1054}

1984/12/10 Improved BrakeSaver Seals Available{1155}

1984/12/10 New Air Pipe Retainers Used To Connect Turbocharger To Aftercooler{1052,1063}

1984/12/10 New 76.6°C (170°F) Water Temperature Regulators Used In Inlet Controlled Cooling Systems{1355,1350}

1984/12/10 Starters That Remain Engaged After Engine Is Running{1453}

1984/12/10 Lubrication Decals (Films) Are No Longer Used On Machines{7557}

1984/12/10 New Pressure Gauges Have Dual Scales [kPa (psi)]{0600}

1984/12/10 Fill Oil Sump Before Installing Woodward Governor{1264,1288,1289}

1984/11/26 New Fuel Injector Assembly Reduces Smoke When Operating At Lower RPM And Load{1251,1250}

1984/12/10 Bonnet Of Fuel Injection Pump Group Now Serviced Separately{1251,1250}

1985/01/14 Minimize Fuel Problems In Cold Weather Operation {1280,1250}

1985/01/14 New And Improved Gaskets In Front Housing Group And Accessory Drive Group {1151,1150}

1985/01/14 Install Different Body Assembly In Clutch Group To Correct Harsh Shifting {3312,3302}

1985/01/14 Remanufactured Air Fuel Ratio Controls {1278,7754}

1985/01/14 Remanufactured 1160 Engines Now Use Sleeve Metering Fuel Systems {1250,1286}

1985/01/14 Additions To Reference Chart For Major Production Changes {0374,0375,1000}

1985/01/14 New Engine Time Requirement Guides (TRG) {0374}

1985/01/14 Remanufactured Electronic Controls (U.S. And Canada) {7400,7754}

1985/01/14 Outright Purchase Of Cores For Remanufactured Products (U.S. And Canada) {7754}

1985/01/14 Improved Valve Mechanism Cover Group Has A New Valve Cover And Seal {1107}

1985/01/14 Valve Lash Adjustment Not A Warranty Item {1102,1105}