1985/05/20 Caterpillar

New Spark Resistant Air Starting Motor Group Has Serviceable Parts{1451}

Usage:

3406 ( 90U ),
3406B ( 6TB ) Industrial Engines

Description of Change: A new spark resistant air starting motor group is available for the above engines. A seal and vane kit, a housing kit, a piston kit, and a jaw clutch kit are available for rebuilding the motor, which is part of this group. The motor of the former sparkless air starting motor group was not serviced.

Adaptable To: The new 7W3397 Spark Resistant Air Starting Motor Group is a direct replacement for the former 2W2267 Sparkless Air Starting Motor Group.

The parts that make up each group will be given in the parts book microfiche.

The following repair kits are available for the new 7W3398 Air Starting Motor which is a part of the 7W3397 Spark Resistant Air Starting Motor Group.

Caterpillar Information System:

1985/05/13 Check For Interference Between Water Temperature Regulator And Cylinder Head Bore{1355}

1985/05/13 Improved Radiator Cores Available{1350,1353}

1985/05/13 Preventing Transmission Manual Switch Failures{3168}

1985/05/13 Hydramechanical Governor Fuel Setting Information{1289,1250}

1985/05/13 New Piston Seal For 139.7 mm (5.50") Hydraulic Cylinders{5456,5457,5104,5458}

1985/05/06 Remanufactured Fuel Ratio Controls Are Available In U.S. And Canada{1278,7754}

1985/05/06 Be Sure Correct Piston Rings Are Used On 3400 Series Engines{1215,1214}

1985/05/06 New Bolt And Seal For Brake Make-Up Oil Tank{5056}

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

1985/05/06 Folded Core Radiators Used In Cooling Systems{1353,1350,1351}

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

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

1985/05/20 Make Sure Back-Up Alarm Switch Is Correctly Installed{7406}

1985/05/20 New Temperature Recorder Group (Crayons) Indicate Surface Temperature{0776}

1985/05/27 Rebuilt Axial Piston Pumps{5070}

1985/05/27 Remanufactured Bare Cylinder Heads (U.S. And Canada){1101,7754}

1985/05/27 Identification Of Track Motor Universal Joint Assemblies{3251,3201,5058}

1985/05/27 Low Charge Indicator Added To Rear Suspension Cylinders{7213}

1985/05/27 Use Caterpillar 6V50 Engine Timing Indicator For Accurate Readings{0782,0785,0775}

1985/05/27 Obtaining Correct Bolt Torque On Ground Engaging Tools{6800,7553}

1985/05/27 Additional Repair Parts Available For Fire Suppression Actuators{7400,7401}

1985/05/27 Correct Procedure To Check Tapered Bearing End Clearances{7551,3257,3300,3000}

1985/06/03 New Line Relief Valves Have Higher Leak Pressures And Less Noise{5453,5463,5464,5550}

1985/06/03 New Spider And Bearing Group And New Bolts Used In Drive Shaft Groups{3251,3253,3250}