New Rear Gear Group Has Spur Gears Instead Of Helical Gears For Longer Service Life{1204,1206,1212}
Usage:
3606 ( 8RB ),
3608 ( 6MC ) Industrial Engines
Description of Change: A new rear gear group is used that has high contact ratio spur gears. Formerly, helical gears were used. The new gears are stronger than the former gears.
Adaptable To: The new 9Y9345 Rear Gear Group is a direct replacement for the former 1W0792 Rear Gear Group. The complete group must be replaced; do not try to use part of the former gears with part of the new gears.
Components in 9Y9345 Rear Gear Group.
Caterpillar Information System:
1990/03/12 New Hand-Held Microfiche Reader Available{0354,0374}
1990/03/12 New Loupe (Magnifier) Available For Inspecting Failed Or Broken Parts{0777}
1990/03/05 New Piston Pin Retainer Used In 3600 Family Of Engines{1214}
1990/03/05 New Basic Turbocharger Groups And Cartridge Groups With Improved Compressor Seals, Thrust Bearings, And Hollow Shaft For Reduced Heat Soak{1053,1077}
1990/03/05 New Plug Used In Front Housing For Fuel Injection Control Group{1151,1298}
1990/03/05 2N4620 Rubber Drive Block Reinstated For Parts Service{3305}
1990/03/05 Preventive Maintenance (PM) Kits Available For 3116 Truck Engines{7258,0645,1261,1318,1352,7542}
1990/03/05 New Fuel Inlet Fitting Eliminates Breakage; New Screen Used In Inlet Fitting{1250,1252,1261}
1990/03/05 Changing Mounting Position Of 9F3099 And 302266 Magnetic Switches (Relays) May Extend Service Life{1426}
1990/03/05 Do Not Use Lubricant On Sticking Start (Ignition) Switches{1416}
1990/03/05 4C5623 Smoke Candles Can Help Locate Air Leaks in Cab{7301,7325}
1990/02/26 New Inlet/Exhaust Valve With Improved Valve Seat Angle, New Valve Guide, New Cylinder Head Assemblies With New Inlet Valve Seats {1100,1103,1104,1105}
1990/03/12 Shorter Bolt Used To Hold Oil Pan Drain Cover{1302}
1990/03/12 Idle Shutdown Timer Used In Auxiliary Power Applications{1705,1706,4267}
1990/03/12 9W2126 Module (Relay Module){7490}
1990/03/19 New Air Conditioner Thermostatic Switches Used {7337}
1990/03/19 Possible Overvoltage Conditions From Output Of VR3 Voltage Regulator {4467,4474}
1990/03/26 New Oil Control Piston Ring Used In 3300 Family Of Engines {1213,1214,1215}
1990/03/26 New Personality Modules Require New Service Program Modules {1902}
1990/03/26 Caterpillar Announces 460 hp 3406B (5YG) Heavy-Duty Diesel Truck Engine {1000}
1990/04/02 Correct Replacement Of Forward Warning Horns{7402}
1990/04/02 New Flywheel Ring Gear Available To Improve Starter Engagement{1158,1454}
1990/04/02 New Valve Lifter Improves Oil Flow To Top Of Engine{1112,1119}
1990/04/02 Correct Torque Required For Bolts In Rear Gear Groups; Specification Omitted From Some Service Manuals{1204,1237,7568}