Dongfeng Military Adjustment and Maintenance - By adjusting the common fault of Cummins diesel - large inspection and adjustment engine

Chapter 2 Dongfeng Cummins diesel engine adjustment and common fault

The engine is a motor plant. This is the core of the car. When the engine is working, the thermal energy released when the fuel is burned to mechanical energy, and the power is output from the flywheel of the engine.

The engine is mainly divided into gasoline engines and diesel engines based on its use of fuel. In recent years, Dongfeng military off-road vehicle EQ2082E6D. EQ2100E6D. EQ2102G has a {[1] pumpkin diesel engine, the original military off-road vehicle EQ2100E, EQ2081E is {[1] EQ6105. EQ6100 gasoline engine This chapter is focused on the Cummins engine.

Basic inspection and adjustment of the first engine

1. Adjust the thrust of the throttle

First, connect the end of the thrust line to adjust the adjustment nut of the throttle to draw the oil pump. While ensuring the idle speed of the engine, the central steel wire of the throttle is in a tight state. In the engine flameout state, the accelerator pedal is pressed to the bottom, the accelerator mechanism of the oil pump should be the maximum angle.

2. Adjust the idle micro-conditioning line

Return the empty transverse tuning knob counterclockwise to the lock position, the idle fine tuning knob brushed wire and the lever are connected to the idle throttle adjustment screw and adjust the adjustment screw when adjusting this state. Fixed adjustment screw when connecting lever

3, close adjustment adjustment,

After both ends of the flameout, the adjustment nut of the flameout tile oil pump is adjusted while ensuring that the engine throttle is completely open, and the centerline of the fire extinguishing bottle is in a tight state.

4, adjust the valve gap

The rotating crankshaft to a cylinder is in a compressed stopper, adjust the first, second, four-cylinder intake valve, first, third, and five cylinder exhaust fans. Rotating crankshafts to six nails are compressed stop, adjust the third, five, six tank intakes, second, fourth and six tank exhaust doors.

Note: The intake gap is: 0.25mm, exhaust door clearance: 0.50mm (B series engine)

Drainage gap is: 0.30mm, exhaust door clearance: 0.61mm (C Series Engine)

Maintenance and maintenance of the second fuel system

When the diesel engine is working, it contains water and impurities in diesel. They are very easy to cause precision components in the fuel system, so the maintenance and maintenance of the fuel system is very important. In addition, due to the oil of the fuel tank, the connection head, etc., which will also enter the fuel system to discharge the air due to the fuel tank.

1. Maintenance and maintenance of fuel systems

Water and impurities in the fuel system should be excluded: When adding fireworks, the gas station of conventional oil companies should be selected as much as possible, if you have a condition, you can store it 72 hours and add it to the tank. . It should be based on seasonal changes, apparent diesel,

2. Fuel system air

1) Air pipelines

First, loosen the flying screw fixing, shake the oil pump arm, discharge the air until the diesel discharged from the discharge screw does not contain bubbles, and tighten the discharge screw.

2) Volume oil in the air

Loosing the high pressure pipe of 1 to 6 cylinders, fixed the armrest nut of the syringe, start the engine, is the high-pressure tube overflowing the diesel without a foam, tightening the nut nuts each start the engine for more than 30 seconds, two start mediation 2 minutes

This article from: Dongfeng Truck Company Heavy Car Factory - \\\"Military Dongfeng off-road vehicle Adjustment and Maintenance Manual