New, Tougher Gasket Used Between Block And Front Housing{1151,7555}
Usage:
All 3408, 3408B And 3412 Engines
Description of Change: A new cylinder block gasket is used between the block and front housing on the above engines. The gasket is made of a tougher material that offers greater resistance to wear.
The former gasket material sometimes wore away due to the slight motion between the housing and block during engine operation.
Adaptable As: The new 4W5599 Cylinder Block Gasket is a direct replacement for the former 4N1625 Cylinder Block Gasket. The following chart shows the effective serial numbers for the change.
Caterpillar Information System:
1985/12/09 Improved Adjustment Procedure For Blade Rail Wear Strips{6151,6174}
1985/12/09 Use Rotating Torque To Check Final Drive And Wheel Bearing Adjustment{4151,4050}
1985/12/09 New Ratchet Wrenches Available For Tube Fittings{0600}
1985/11/25 Canister Size Of Coolant Conditioner Element Has Changed{1350}
1985/11/25 Improved Bearing Retention In Planetary Group{3150}
1985/11/25 New Duo-Cone Seal Groups Used in Service and Parking Brake Groups{4251,7561}
1985/11/25 Operator Console Group Improved{5200}
1985/11/25 Improvements To Boom And Upper Frame Extends Service Life Of Pin Bores, Pins, And Bearings{6501,7051}
1985/11/25 New Fuel Ratio Control Group Used On Engines Equipped With New Scroll Fuel System{1278}
1985/11/25 New Left Side Mirror And Door Seal Available{7319,7308,7300}
1985/11/25 Faster Response Water Temperature Regulators; Service Simplified{1350,1355}
1985/11/18 Filter Added To Drain Hole In Water Pumps{1361}
1985/12/16 Troubleshooting Of Jacket Water Heaters{1383}
1985/12/16 Use Care When Handling Turbocharger Compressor Wheels{1052,1077}
1985/12/16 Gasket Leakage On Aftermarket Fuel Filters{1261}
1985/12/16 Crankshaft Seal Usage On 3400 Series Engines{1160,1161}
1985/12/16 Bushing Kits Available For Crankshaft Pulleys{1205}
1985/12/16 Pressure Gauge Faces With Tonnage Scales Available For Caterpillar Service Tool Manual And Electric Hydraulic Pumps{0615,0616,0799}
1986/01/13 How To Use Temperature And Pressure Probes With Self-Sealing Probe Adapter Groups{0760,0784}
1986/01/13 Fuel Sulfur Analyzer Available{0651,1280,1318}
1986/01/13 Repair Of Speed Sensor Harness On Electronically Controlled Transmissions{3168,3175}
1986/01/13 New Parking Brake Valve And Drain Lines Eliminate Seal Leaks{4282}
1986/01/13 New Muffler Clamp Used To Hold The Muffler To The Exhaust Pipe{1061,1062}
1986/01/13 Round Air Cleaner Inlet Adapter Available{1051}