1982/02/17 Caterpillar


New Fuel Nozzle Adapter Assembly Used

Usage:


All 3406 And 3408 D. I. Truck Engines

Description of Change: New fuel nozzle adapter assemblies are used in the cylinder head groups on the above engines. The new adapter assemblies are made of a different steel alloy that will give a longer service life.

The former adapter assemblies have had crack failures. The former adapters were made of a lead steel alloy. Indications are that the lead in the steel caused the cracks.

Adaptable As: The new 1W7884 and 1W7885 Fuel Valve Adapter Assemblies are direct replacements for the former 9N5431 and 8N9457 Adapter Assemblies respectively. The former adapters have been canceled.

The new parts are in effect with the Serial Numbers 92U50842 and 28V04526.

Caterpillar Information System:

1982/02/17 Bent Lever For Fuel Shut-off Solenoid Can Cause Low Engine Performance
1982/02/17 Gasket Kits
1982/01/13 Check Bottom Surface Of Cylinder Liner Flange For Erosion And Wear
1982/01/13 Use Of Metric Fasteners
1982/01/13 Make Sure Coolant Conditioner Elements Are Changed At Correct Intervals
1982/01/13 New Cylinder Liners And O-ring Seals Give Longer Seal Life
1982/01/13 List Of Service Publications
1982/01/13 New Torque Specification For Bushing
1982/01/13 New Regulator Assemblies Used
1982/01/13 "SIRS User Instructions" Available
1982/01/13 New Springs For Timing Advance Used In Governor And Fuel Pump Drive Group
1982/01/13 New 6V4190 Auto Programmer Group And 6V4865 Auto Programmer Connector Used With 6V2100 Multitach
1982/02/17 List Of Service Publications
1982/02/17 New Crankshaft Seal Group Has Assembled Rear Seal And Wear Sleeve
1982/02/17 New Flywheel Assemblies Used
1982/02/17 The Service Publications Information Feedback System
1982/02/17 New Idler Shaft Used In Fuel Transfer Pumps
1982/02/17 Hose Assembly Moved To A New Position
1982/02/17 New Washers Permit Locks To Hold Better
1982/02/17 New Engine Testing And Adjusting Tools Give More Accuracy And Longer Service Life
1982/03/31 Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine
1982/03/31 New Gasket Used In Governor And Fuel Injection Pump Group
1982/03/31 Reconditioning Of Bridge Wear Seat Is Permitted; Will Prevent Bridge Replacement When Not Necessary
1982/03/31 New Regulator Group Increases Coolant Flow To Cab Heater, Prevents Overcooling
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