New Washer And Bolts Keep Fan Drive Tight
Usage:
All 3400 Industrial and Generator Set Engines
Description of Change: A thicker washer and self-locking bolts are used in the fan drive group on the above engines. The new bolts have a small deposit of nylon in the threads which keep the bolts tight. There have been reports of loose bolts on some fan drives. This permitted the fan to become loose and damage the radiator.
Adaptable As: The 7N2900 Washer and 5P7979 Bolts are a direct replacement for the former 5S7264 Washer and 1H5403 Bolts.
New washer and bolts for the fan drive.
Caterpillar Information System:
1983/04/27 New Specifications For Installation Of Crankshaft Counterweight Bolts
1983/04/27 Valve Spring Retainers Now Have Thicker Flanges
1983/04/27 Change 6V3060 EGR Testers To LES Testers
1983/04/27 Improved Valve Springs Available
1983/04/27 New Gasket And Cover Used On Governors
1983/04/27 Remove Plastic Plug From Fuel Transfer Pump
1983/04/27 New Special Instruction Available For 6V4135 Halogen Leak Detector
1983/04/27 Pistons With Thicker Top Rings Must Be Used In Correct Applications
1983/04/27 Changes To Valve Clearance Settings
1983/04/27 New Shutoff Solenoid Group Used
1983/04/27 8S1603 Socket Group For Use On Bolts With 12 Point Heads
1983/04/27 List Of Service Publications
1983/04/27 Balancer Shaft And Gear Now Available Separately
1983/04/27 Oil Passage Plugs Are No Longer Installed In Crankshafts For Parts Service
1983/04/27 Use Of 9S3265 Retaining Compound On AiResearch Turbocharger Compressor Wheel Retainer Nuts
1983/04/27 Labyrinth-Type Seal Ring Available For Rear Power Takeoff
1983/04/27 Use 6V7777 Spacer With 9S6030 Front Oil Seal Installer
1983/04/27 Installation Of Bearing For Connecting Rod Piston Pin
1983/04/27 New Reconditioning Specifications For Cylinders Decrease Piston Scuffing And Seizure
1983/04/27 New Turbocharger Has Thicker Mounting Flange To Prevent Breakage
1983/04/27 New Gasket Prevents Leakage
1983/04/27 New Connecting Rod Bearings Used
1983/05/25 Double Lip Crankshaft Seal Helps Stop Oil Leakage
1983/05/25 Use The 6V4930 Battery Load Tester To Test Batteries