1984/12/12 Caterpillar

Additional Clamp Reduces Vibration Of Turbocharger Oil Supply Line

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 3500 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:

1984/12/12 New 76.6°C (170°F) Water Temperature Regulators Used In Inlet Controlled Cooling Systems

1984/12/12 Starters That Remain Engaged After Engine Is Running

1984/12/12 Thread Identification Kit Available

1984/12/12 Remanufactured Turbocharger Groups

1984/12/12 Improved Turbocharger Oil Drain Elbows

1984/12/12 A Soot Filter Is Available For Use With Air Cleaners

1984/12/12 New Pressure Gauges Have Dual Scales [kPa (psi)]

1984/12/12 Causes And Correction Of Opposite Crankshaft Rotation In Direct Injection Engines

1984/12/12 Additional Information For Correct Fuel Injector Timing

1984/10/24 New Cylinder Head Gasket Helps Prevent Oil Leakage Around Gear Pocket

1984/10/24 Wiring Changed On Voltage Regulators

1984/10/24 Deflection Of Flywheel Housings Should Be Controlled During Transportation

1984/12/12 Addition Of Lubricator Will Help Prevent Corrosion In Air Prelube Motors

1984/12/12 Preferred Engine Timing Procedures

1984/12/12 Identification Of Camshaft Groups And Valve Mechanism Groups

1984/12/12 New Seal Used In Alternator Mounting Group

1984/12/12 Rear Power Take-Off Clutch Can use Nonmetallic Plates And Grease Lubrication For Main Bearings

1984/12/12 Important Differences In Engine Arrangements On 3208 Engines Equipped With Turbochargers

1984/12/12 Remanufactured Cylinder Head Groups

1984/12/12 Use Care When Installing Circuit Boards In Regulators

1984/12/12 New Fuel Injector Assembly Reduces Smoke When Operating At Lower RPM And Load

1984/12/12 Bonnet Of Fuel Injection Pump Group Now Serviced Separately

1985/01/16 Install Different Body Assembly In Clutch Group To Correct Harsh Shifting

1985/01/16 Improved Valve Mechanism Cover Group Has A New Valve Cover And Seal