Category Archives for Service Magazine

Excessive Antifreeze Concentrations Can Cause Overheating

All Caterpillar Engines Most formulated antifreezes contain chemical compounds which rely on water to keep the compounds dissolved. If little or no water is used with antifreeze, the compounds will come out of the solution and build up on hot … Continue reading

02. March 2019 by sam
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A New Method To Clean And Polish Engine Valve Stems

A special 6V2033 Flap-type Finishing Brush is now available to clean and polish (make smooth) engine valve stems. Formerly, solvent or vibratory cleaning were used on valve stems. The 6V2033 Brush is 8″ (203 mm) in diameter and 2″ (51 … Continue reading

02. March 2019 by sam
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Improved Engine Design Uses Cylinder Block With Spacer Plate And New Crankshaft Thrust Plates

All 3304 and 3306 Engines Made In The U.S.A. Description of Change: Several improvements have been made to 3304 and 3306 Engines starting with the serial numbers shown in the chart. … A new cylinder block uses a spacer plate … Continue reading

02. March 2019 by sam
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Why Engines Are Damaged By Fuel Sulfur

In the past 30 years, fuel sulfur wear in engines has been minimized through the use of correct lubricants, adherence to the correct oil change intervals, and the efforts of the fuel refiners. Recently, we have been receiving reports that … Continue reading

02. March 2019 by sam
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Fuel Sulfur-Your Diesel’s Silent Enemy

The problem of wear caused by sulfur in diesel fuel is serious. At this time, there are confirmed reports of increasing amounts of sulfur in today’s crude oils, particularly outside the United States and Canada and in coastal areas. Equipment … Continue reading

02. March 2019 by sam
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Vacuum Tester Checks For Leaks Between Valve Face and Seat

The FT1741 Vacuum Tester can be used to check for leaks between the valve face and the seat on cylinder heads. The vacuum tester can be used after the valves and seats are ground and the valve springs are assembled. … Continue reading

02. March 2019 by sam
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Check For Interference Between Water Temperature Regulator And Cylinder Head Bore

3300 Series Engines Reports indicate that some 3300 Series Engines with 7N208 Water Temperature Regulators have experienced overcooling or cooling system pressure surges. In many cases this problem is caused by interference between the water temperature regulator guide tabs and … Continue reading

02. March 2019 by sam
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3300 Engine Front Single Lip Silicone Rubber (5S6296) Crankshaft Seal Group

Illustration 3 shows a seal with a single silicone rubber sealing lip.

02. March 2019 by sam
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3300 Engine Rear (4W452) Hydrodynamic Crankshaft Seal Group

This seal has hydrodynamic grooves in its sealing lip (see Illustration 1). These grooves move lubrication oil back into the engine crankcase as the crankshaft turns. There is an additional lip without grooves on the flywheel side of the seal. … Continue reading

02. March 2019 by sam
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Three different designs of 7S3161 Valve Lifter.

There has been some customer concern regarding the use of Remanufactured exhaust valves with Remanufactured cylinder heads in certain applications. The decision to use NEW exhaust valves in Remanufactured cylinder heads will enable the customer to choose Remanufactured cylinder head … Continue reading

02. March 2019 by sam
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