Use Care When Handling Water Seals For Cylinder Head Spacer Plates{1115}
Usage:
All 3400 Series Engines
Petroleum products can damage the rubber used in spacer plate water seals (4W1055 Seal). This damage can be caused by the use of a water soluble oil in the cooling system or by contamination during maintenance or assembly.
When petroleum products come into contact with these seals they cause the rubber to swell. This can result in extruding and eroding of the inside diameter of the seal lip.
Location of seal.
Caterpillar Information System:
1985/07/15 Special Instruction Available To Salvage Governor Housing{1287}
1985/07/15 Change To Astern Drive Shaft Reduces Horsepower Loss And Improves Ahead Clutch Cooling{3351}
1985/07/15 Hardened Washers Used In Engine Oil Lines; Locks Removed From Oil Pump{1307}
1985/07/15 Problems Caused By Electric Governors That Are Not Supplied By Caterpillar{1289,1257}
1985/07/15 Extra Injection Nozzle Clamp Helps Prevent Injection Nozzle Damage{1252}
1985/07/15 New Type Of Paint Used On Some Caterpillar Products; Do Not Weld On Painted Surfaces{0350,0679}
1985/07/01 Fuel Filter Service Indicators Now Available{7450}
1985/07/01 Oil Pump Flow Increased{3310,3314}
1985/07/01 Breather Element Added To PCV Valve{1300,1074}
1985/07/01 Fuel Return Tube Assembly Replaced By Hose Assembly{1274}
1985/07/01 Battery Disconnect Switch Stops Battery Drain{1411}
1985/07/01 Voltage Regulator Cross Reference Chart{1410,1405}
1985/07/15 Engine Air Inlet Adapters{1050}
1985/08/05 New Service Tools Available{0600}
1985/08/05 Engine Rotation Can Be Changed On 3500 Series Engines{1000}
1985/08/05 New Fuel Pump And Governor Drive Shaft Has Pressure Lubrication For Splines{1288}
1985/08/05 Valve Mechanism Groups Use New Lifter Assemblies{1209}
1985/08/05 Correct Location And Rotation Of Front Timing Gears{1204,1206}
1985/08/05 New, Corrosion Resistant Water Pump Shaft Available{1389,1361}
1985/08/05 Rough Handling Can Move Droop Lever Out Of Position{1264}
1985/08/05 Thread Sealant Must Be Used On Air Compressor Mounting Bracket Bolts{1800,1803}
1985/08/05 Stronger Push Rod Used{1208}
1985/08/05 Head Gasket Replacement Procedure{0350,1100}
1985/08/05 Remanufactured Cylinder Head Group For NA Engines Must Not Be Installed On T Engines{1100,1108}