1984/01/18 Caterpillar


Replacement Valve Guides Can Be Used To Recondition Cylinder Heads

Usage:


All 3100 and 3200 Series Engines

Description of Change: Two new valve guides (one intake and one exhaust) can now be used to recondition cylinder heads on the above engines. These valve guides can be installed as a replacement for original valve guides which have worn beyond their maximum tolerances. Formerly, the only way to recondition worn valve guides was to knurl the inside diameter.

Special Instruction, Form SMHS8277, has complete information on the installation of the new valve guides.

Adaptable To: The new 4W3778 (Intake) and 4W3779 (Exhaust) Valve Guides are adaptable to all the above engines.

Caterpillar Information System:

1984/01/18 New Cover And Lever Will Prevent Overtravel Of Valve Spool
1984/01/18 FT1808 Cable Permits Easier Use Of 6V2100 Multitach To Check Engine Or Alternator RPM
1984/01/18 Service Information For Balancers And Dampers
1983/11/30 Use Of A High Temperature Regulator Will Keep Condensation To A Minimum
1983/11/30 Additional Remanufactured Water Pumps Available
1983/11/30 Several Temperature Detectors Available For 6V6996 And 6V7118 Induction Bearing Heaters
1983/11/30 New Control Valve Group Corrects Pressure Pulsations
1983/11/30 Crankshaft Positions For Injector Timing And Valve Clearance Settings
1983/11/30 Reuse Of Engine Bearings
1983/11/30 New Water Temperature Regulator Has Shorter Response Time
1983/11/30 Improvements Made To Cooling System
1983/11/30 New Valve Lifter Assemblies Used In Valve Mechanism Groups
1984/01/18 Dry Exhaust Elbow and Improved Turbocharger Exhaust Seal Help Prevent Exhaust Gas Leakage
1984/01/18 Usage Of Pistons With Rectangular Rings
1984/01/18 Mixture Of Inch And Metric Fasteners To Be Used
1984/01/18 Water Pump Housing Is Now Available For Parts Service
1984/01/18 Stronger Water Cooled Exhaust Manifold Used
1984/01/18 New Spring And Shaft Used In Governor Control Lever Have Increased Corrosion Resistance
1984/01/18 New Plastic Impeller Will Help Improve Service Life Of Water Pump Seal
1984/01/18 6V4163 Bit And 6V4164 Driver Now Available For Removal Of Bolts For Flyweight Carrier
1984/01/18 Drive Block Retainer Plates Are No Longer Used
1984/01/18 Inspect Camshaft And Lifters After A Failure In The Valve Mechanism Area
1984/01/18 Modification Of Control Panel Gives Different Power Source For Overcrank Timer To Prevent Starter Motor Failures
1984/01/18 Parts Service Information For Pistons
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