Crankshaft Failures; New Thrust Plate{1203,1202,1230}
Usage:
All 3408 and 3412 Engines
Description of Change: A new crankshaft thrust plate is used on 3408 and 3412 Engines. The new thrust plate has an 11% increase in the thrust area which will permit the plate to withstand high thrust bearing loads and operate at a lower temperature than the former thrust plate.
Adaptable To: The new 1W5252 Plate is a direct replacement for the former 7N8947 Plate in 3408 and 3412 Engines.
Caterpillar Information System:
1981/05/04 Automatic Shut-Off Systems Not Recommended on Mobile Earthmoving Equipment{7418,7403}
1981/05/04 Larger Valve Springs{1108,1101,1252}
1981/04/27 Special Instruction Available For The Use Of The 6V4040 Nitrogen Tire Inflation Group{4203,0374}
1981/04/27 Fuel Injection Test Bench Specification Sheets Changed{0652}
1981/04/27 Replacement Thermostat, Element Assemblies Available For Jacket Water Heater{1383}
1981/04/27 Use 6V4089 Reamer Assembly To Clean Nozzle Bores{0622}
1981/04/20 Stronger Fitting Used With Sending Unit For Oil Pressure Gauge{7457,7451,3310,3314}
1981/04/20 Use 6V4173 Clamping Bar Group On Hydraulic Hose Press{0624}
1981/04/20 6V4020 Piston Ring Expander Group Available{0622,1215,1214}
1981/04/20 Storage Compartments For Maintenance (Lubrication And Maintenance) Guides{7312}
1981/04/20 Different Check Valve Gives Faster Shifts{3313}
1981/04/13 Correct Installation Of Seal Spacer In Gear-Type Hydraulic Pumps{5073}
1981/05/04 Use 6V4057 Grease Gun Adapter In Difficult Access Areas{0671}
1981/05/11 Use 6V4069 Body Group To Remove Tapered Drive Sleeve{0611}
1981/05/11 Caterpillar Cooling System Conditioner (Liquid Or Spin On Elements) Can Be Used In Ford Truck Installations{1350}
1981/05/11 Remove And Install Cam Bearings With 6V4077 Cam Bearing Tool Group{0621,0622}
1981/05/11 Installation Of Rear Bearing Oil Seals In 3N6542, 3N8617, And 3N8618 Rear Power Takeoff Clutch Groups{3055}
1981/05/18 Safety: Battery Vent Caps{1401}
1981/05/18 Remove Direct Injection Fuel Nozzles With 6V4061 And 6V4054 Nozzle Pullers{0621}
1981/05/18 Change Made To Power Take-Off Adapter Housing{3055}
1981/05/18 Replacement Bushings For Delco-Remy Electric Starting Motors Must Be Machined For Correct Clearances{1453,1454,1465}
1981/05/18 New Mounting Group For Overspeed Switch{7410}
1981/05/25 Instruction Cards For "Go-No Go" Gauges Now Available{0653}
1981/05/25 Use Correct Specifications To Check Piston Ring Gaps{1215}