1985/04/22 Caterpillar

New Camshafts Used In SAE Standard [CCW] Rotation Engines{1200,1210}

Usage:

All 3500 Series Engines With SAE Standard [CCW] Rotation

Description of Change: New camshafts are being used in all 3500 Series Engines with SAE Standard [CCW] Rotation. The new camshafts have a tapered drive and thrust ring on one end only, and cannot be used in SAE Opposite [CW] Rotation Engines.

Adaptable As: The new camshafts shown in Chart A are direct replacements for the former camshafts used in SAE Standard [CCW] Rotation Engines only.

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NOTICE

These camshafts cannot be reversed to change engine rotation.

To change an SAE Standard [CCW] Rotation Engine to SAE Opposite [CW] Rotation, new camshafts must be used. The former camshafts, which are serviced, must be used in a SAE Opposite [CW] Rotation Engine.

The new camshafts are not serviced, the former part numbers should be used when ordering parts. The new camshafts are effective with the serial numbers shown in Chart B.

Caterpillar Information System:

1985/04/08 Constant Torque Hose Clamps Available For General Use{7550,7553}

1985/04/08 Track Group Shipping Clamps Are Available Through The Parts Distribution System{4170}

1985/04/08 Make Sure Air Cylinder For Governor Actuation Is Correctly Adjusted{1269}

1985/04/08 Hardened Spacers Help Keep Bolts Tight{1063}

1985/04/08 Changes To Naturally Aspirated Truck Engines For 1985{1000,1200,1214,1218,1250,1251,1254}

1985/04/08 Crankcase Explosion Relief Valve Kit Available{1200,1233}

1985/04/08 New Outer Governor Spring And Torque Control Pin Used In Governor And Pump Groups{1264}

1985/04/08 Additional Zinc Rods Improve Service Life Of Sea Water Heat Exchanger{1379}

1985/04/08 Several Types Of Automatic Voltage Regulators (AVR) Used In SR4 Generators{4450}

1985/04/08 Differential Oil Pressure Gauge For Oil Filter Shows High Differential Pressure{1300,1306,1315}

1985/04/08 Electric Hour Meter Failures{7450,7478}

1985/04/08 Preferred Locations For Water Temperature Protection Devices{7403,7417,7420}

1985/04/22 Correct Installation Of Oil Sequence Valves{1304}

1985/04/22 FT1953 Gauge For Track Assembly{0600,0760}

1985/04/22 New Ring (Seal) Used In Clutch Piston{3354}

1985/04/29 Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}

1985/04/29 Extended Oil And Oil Filter Change Intervals{1300,1318}

1985/04/29 Special Pricing On Metric Hand Tools For U.S. And Canada Only{0600,0601,0602}

1985/04/29 Visual Inspection Can Detect Chrome Plated Engine Valves{1105}

1985/05/06 Exhaust Manifolds Now Use Locks And High Temp Bolts{1050,1059}

1985/05/06 New Battery Cable Crimping Die Available{0600}

1985/05/06 New Bearing Housings Available For Turbochargers{1052,1053,1056}

1985/05/06 System To Find Internal Fuel Leakage{1250}

1985/05/06 New Governor Drive Group Has Longer Service Life{1289,1264}