New Fuel Return Valve Prevents Siphoning{1253,1274}
Usage:
3114, 3116 Engines
Description of Change: A new fuel return valve is used in the fuel filter lines group. The valve uses spring force against an O-ring seal and seat. This provides a positive seal against fuel siphoning when the engine is not operating. The former valve could allow the fuel to siphon back to the tank making it hard to start the engine.
Adaptable To: The part numbers of the improved 7W9854 (3114 Engines) and 7C9651 (3116 Engines) Fuel Filter Lines Group have not changed. The new valve is effective with 3114 (5EF562, 6AF580, 3ZG116, 5JG742), 3116 (2WG830, 2SG935, 4KG107, 1NJ998, 7SF1) Engines. These parts are adaptable to earlier engines. There is one of each of the new components.
Location of components.
Caterpillar Information System:
1989/12/25 New Cooling System Cleaner Now Available For All Engines{1350,0680,1352,1353}
1989/12/25 Do Not Use 1U5555 Hydraulic Hose Press Pump Group In 230 Volt Circuits{0616,5057}
1989/12/25 New Shaft Assembly Available For Cutter Drum{6601}
1989/12/25 Alternative Air Pressure Test Point{1804}
1989/12/25 Gaiter (Protector) Available For "Over-Hitch" Hoses{7167,5057}
1989/12/25 Components Of 9T1318 Steering Metering Pump Group Are Available For Parts Service{4312}
1989/12/25 New Thrust Discs Used In Transmission And Transfer Drive Groups{3060,3260}
1989/12/25 Electrical Connection Studs Are Too Long On Fuel Level Sensor{7481,1400}
1989/12/25 New Assembly Method For Track Links Makes It Easier To Install And Adjust{4169,4170}
1989/12/25 New Service Repair Spring Available For Winch Clutch And Brake Control Group{5419,5173}
1989/12/18 Blade Control Lever Can Be Repositioned To Improve Operator Comfort And Linkage Life{5051,5063,5600}
1989/12/18 New Seal Kit Used In Drag Conveyors{6630,3261,4184}
1990/01/15 Information About Front Tire Wear And Drive Train Noise {4203,4231,4233,3000}
1990/01/15 New Governor Control Cable Resists High Temperature And Is More Appropriate For Some Applications {1265}
1990/01/15 Many Components That Were Previously Only Serviced As Complete Groups Now Have Serviceable Components {0374}
1990/01/15 New Conveyor Drive Pump Increases Conveyor Speed {5620}
1990/01/15 Capability To Push A Nurse Or Additive Truck {5600,3060}
1990/01/15 Separate Service Manual Microfiche Library Available For Engines Only {1000,0374,0375}
1991/08/01 Timing Mark Identification On Fuel Pump Gear{1286,1251,1272}
1991/11/01 Parts Book Correction{5725}
1991/12/01 Test Harness For Calibrating 838141 Electronic Control Box{5485}
1991/12/01 RT80/RT100 Gearbox Lubrication{3000}
1991/12/01 Service Parts Available for 838440 Joystick Controller Group. Procedure to Recalibrate the Joystick{5485}
1991/12/01 Checking The 838440 Joystick Group{5485}