1989/05/01 Caterpillar


New Clamps With Grommets Used In Fuel Lines

Usage:


3500 Family Of Engines

Description of Change: New clamps with grommets are used in the fuel lines used on the 3500 Family of Engines. The new clamps with grommets provide a softer mounting that helps to dampen vibration of the lines. The new clamps and grommets are used only in area where vibration dampening is needed.

Adaptable To: Two new 7C2199 Clamps and one new 7C3036 Grommet can be used to directly replace two former 1N4734 Clamps. Two new 9Y0047 Clamps and two new 7C3036 Grommets can be used to directly replace two former 8N2755 Clamps. Put a thin coat of 5H2471 Cement on the outside of the grommets before installing the new clamps.

The fuel lines on the 3500 Family Of Engines use both new 7C2199 Clamps (single line) and 9Y0047 Clamps (double line) with new 7C3036 Grommets.

Caterpillar Information System:

1989/05/01 Check Valve Added To Fuel Injection Lines
1989/05/01 Fuel Manifolds Changed To Steel
1989/05/01 Longer Bolts Give More Life To Gaskets Between Water Cooled Aftercooler Housings
1989/05/01 New Heavy-Duty Air Cleaner Groups Available
1989/05/01 Front Idler And Accessory Drive Gears Improved
1989/05/01 New Installation Procedure For Unit Injectors
1989/04/01 List of Service Publications
1989/04/01 New Service Tools Available
1989/04/01 Causes And Effects Of Low Battery Voltage On Electric Starters
1989/04/01 Limitations On Engine Cranking Time
1989/04/01 Preventive Maintenance For Batteries
1989/04/01 Bolts Must Be Reinstalled In Same Holes In Companion Flange And Gear Output Flange
1989/05/01 Two Retainers Used To Better Fasten Air Inlet Pipes In Turbocharger Compressors
1989/05/01 Use Care When Positioning Turbocharger Compressor Housing
1989/05/01 New Crankshaft Thrust Plate Made Of Brass
1989/05/01 Keys For Power Modules Shipped Inside Air Louver
1989/05/01 Do Not Prefill Secondary Fuel Filter
1989/05/01 New Valve Stem Seal Used On Inlet Valves And Added To Exhaust Valves
1989/05/01 New Head Gasket Used
1989/05/01 Procedure For Replacing Batteries Or Battery Cables
1989/06/01 Maintenance Inspection Of Emergency Shutdown Systems Required Every 1000 Hours
1989/06/01 New Extension Assembly Used In Gas Engine Ignition Groups
1989/06/01 New Front Crankshaft Seal Requires New Installer Tool
1989/06/01 New Upper and Lower Seals For Folded Core Radiators In Cold Temperature Applications
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