1979/03/14 Caterpillar


Information About The Use Of Earlier Cylinder Heads And Liners With Spacer Plate Cylinder Blocks; List Of Earlier Articles

Usage:




D342, D353 Engines

Three Engine News articles, two Supplements, and a Special Instruction have been published with information about the use of spacer plate cylinder blocks in the above models. For easier access to this information, the chart shows a list of the articles and where to find them.

At the same time, some of the information has not been clearly understood. For assistance with possible problems during engine reconditioning, make a note of these items:

1. On 5.75" Bore engines, the former cylinder heads can be adapted to the spacer plate cylinder block. It is necessary to drill six holes along the side that has the push rod compartment, and install inserts in the water director counterbores as shown in the Special Instruction form. See the chart.

2. On 6.25" Bore engines, the current recommendation is that the former cylinder heads not be used on the spacer plate block because of possible oil leakage at the gasket on the camshaft follower side of the cylinder head. If desired, dealers and customers can use the former cylinder heads with inserts installed in the water director counterbores, but the holes for added head bolts along the camshaft follower side can not be drilled in these heads. Since the new gaskets must be used with the spacer plate, but the new bolts can not be added with former heads, gasket compression will be less which can permit leakage of oil along this side of the head.
3. On 6.25" Bore engines, former cylinder liners can not be used with spacer plate blocks. Only the former head gasket can be used with the former liners, and this gasket can not be used with the spacer plate block.

Caterpillar Information System:

1979/03/14 Revision To Guideline For Reusable Parts Is Available
1979/03/14 List Of Service Publications
1979/03/14 Larger Diameter Washer Is Used To Hold Air Transfer Pipe In Aftercooler Flange
1979/03/14 Maintenance Procedures For Extended FPTO Life On 3408 And 3412 Marine Engines
1979/03/14 Main Bearings Now Have Larger Diameter Oil Hole For Better Lubrication Of Main And Rod Bearings
1979/03/14 8L4525 Flange Is Available Again For Parts Service Of 3192 Marine Transmissions
1979/03/14 Improvements Made To Fuel Injection Pump And Governor Group
1979/03/14 New Engine Cylinder Block Used
1979/03/14 New Fuel Injection Nozzles Are Used In 3208 Engines
1979/03/14 New Piston And Connecting Rod Are Tapered In Area Of Piston Pin
1979/03/14 New Oil Filter And Filter Base Assemblies
1979/03/07 New Exhaust Pipe Connector Makes A Tighter Seal Between Pipe And Manifold
1979/03/14 Replacement Bushing Available For Cast Iron Rocker Arms Only
1979/04/04 New Fabricated Tools Available For Service Work On 7211 And 7221 Marine Transmissions
1979/04/04 New Oil Jet Tube In Cylinder Block Gives More Clearance For Pistons And Connecting Rods
1979/04/04 Four Crankshaft Rear Seals Are Available For Use On 3304 And 3306 Engines
1979/04/04 List Of Service Publications
1979/04/04 New Woodward Governor Control Used On Diesel Engines; Former Control Now Used On Gas Engines Only
1979/04/04 Improved Fuel Priming Pumps Give Longer Service Life
1979/04/04 Fabricated Air-To-Water Aftercooler Available For Dynamometer Testing Of Engines Equipped With Air-To-Air Aftercoolers
1979/04/04 A Reverse Connection Of Oil Filter Hoses Can Cause Bearing Failures
1979/04/04 New Pistons And Timing Advance Unit Give Better Emissions Control And Easier Starts
1979/04/25 6V112 Repair Kit Available For Parts Service Of The 8H8558 Nut Spinner
1979/04/25 Inspection Of Connecting Rods In Parts Stocks
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