1984/08/13 Caterpillar

Higher Compression Pistons Can Help Reduce White Exhaust Smoke During Cold Weather Starts{1250}

Usage:

3208 NA Truck Engines With 138 kW (185 hp) Rating

Reference: In the Service Magazine, March 5, 1984, the article "Causes Of White Exhaust Smoke During Cold Weather Starts And Ways To Reduce It" gives suggestions for reducing white smoke during cold weather starts.

Another method not mentioned in the article is to use straight (unblended) No. 1 diesel fuel without cetane improvers or other additives.

If the suggestions and corrections in the Reference Article, or No. 1 diesel fuel does not reduce this white smoke to an acceptable level, pistons with 18.2:1 compression ratio can be installed in 138kW (185 hp) 3208 NA Truck Engines.

The new pistons with 18.2:1 compression ratio are direct replacements for the pistons with 16.5:1 compression ration shown in the chart.

Caterpillar Information System:

1984/07/16 Installation Instructions For Turbocharger Bearing Kit{1052,1053}

1984/07/16 Use Vacuum Tester For Quality Control Check Of Water Pump Seal{0768,1361}

1984/07/16 FT1886 Valve Spring Compressor Group Available{0600,1108}

1984/07/16 New Mechanical Service Meter Used{7478}

1984/07/16 Use Caution When Handling Components That Contain Asbestos{0353}

1984/07/16 Alternator Available For General Use{1405}

1984/07/16 New Relief Valve Guide Used In Oil Pump{1315}

1984/07/16 A New Baffle Plate And Oil Pump Drive Sleeve Are Used In Marine Transmissions{3310}

1984/07/16 Make Sure Crankshaft Is Installed Correctly{1202}

1984/07/09 New Disassembly And Assembly Tools Available For Fuel Ratio Controls{0600,1278}

1984/07/02 Surface Grinding Of Compacted Graphite Iron Cylinder Heads{1101}

1984/07/02 New Crankshaft, Cylinder Block And Camshaft Used{1202,1201,1210}

1984/08/13 New Service Tools Available{0600}

1984/08/13 New Films (Decals) Available For Service Meter Face{7478,7480}

1984/08/13 New Fuel Injection Pumps, Fuel Injection Lines, Fuel Injection Nozzles, and Piston And Rod Groups Used On Some Engines{1000,1225,1251,1252,1254}

1984/08/20 Instrument Panels Improved{7450}

1984/08/20 New Thermistor Thermometer Group Can Be Ordered At Less Cost{0651,0653,0650}

1984/08/20 Two New High Speed Marine Transmissions Can Be Used With 3500 Series Engines{3302,3306,3351}

1984/09/03 Correct Removal And Installation Of Double-Walled Fuel Injection Lines Help Prevent Fuel Leakage{1252}

1984/09/03 New Inlet Valve Used{1105}

1984/09/03 New Crankshaft Seal Groups Available{1202}

1984/09/03 New Oil Pan And Brace Assemblies, Coarse Thread Bolts Used Instead Of Fine Thread Bolts{1302,0683}

1984/09/03 Rubber Bumpers Limit Movement Of Control Panel{7421,7002}

1984/09/03 New Transfer Gears Have Better Contact And Alignment{3301}