Fuel Injector Assembly Injection Nozzle Couple
3 year ago
1 Diesel fuel is not clean, impurities in the high-pressure oil pipe, so that the needle valve coupling is not closed tightly, the combustion chamber in the high-pressure gas rebound, burned needle valve coupling. In addition, the injector regulator spring, tappet and other parts of the dirt through the injector tappet moved to the upper part of the injector needle valve, or oil road used to prevent oil leakage of cotton rope, lead wire through the high-pressure oil pipe into the injector, will make the needle valve coupling jammed.
2 The machine temperature is too high injector cooling is poor, resulting in the oil valve coupling stuck.
3 The oil valve wear, so that when the injector stops spraying oil drip phenomenon, so that the injector nozzle burning coke accumulation, the occurrence of jammed failure.
4 Injector installation, omission of gaskets or gasket damage, resulting in air leakage, causing the injector local temperature is too high and stuck.
5 The injection pressure is too low, resulting in the combustion chamber of high-pressure gas backflow.
6 Parts manufacturing reasons, such as cylinder head injector mounting holes and injectors with too tight, needle valve body and cylinder head mounting hole clearance is too small, cylinder head injector mounting hole processing too deep.
Injection nozzle stuck repair method.
First, the stuck injector into the diesel or oil warming, and then remove the cloth wrapped, and then clamp the needle valve with hand pliers and slowly move, the needle valve from the needle valve body out. A small amount of clean oil drops in the body of the needle valve, so that the needle valve in the body of the needle valve repeated activities, until the needle valve can move freely in the body of the needle valve. If the sealing surface of the needle valve has traces of burns, it should be ground with abrasive paste. When grinding, pay attention to grasp the amount of grinding paste and grinding time. The cleaned bell valve coupling will be installed on the injector, and adjust the injection pressure can be used again.
190 Series Parts
Spare parts for 12V190
No.
Part Name
Part Number
Qty
1
CYLINDER BLOCK ASSEMBLY
1
1
3
CYLINDER HEAD ASSEMBLY
127.03.00
12
4
OIL SUMP ASSEMBLY
12VB.04.00B
1
5
PISTON AND CONNECTING ROD ASSEMBLY
127.05.00
12
6
CAMSHAFT AND GEAR TRAIN ASSEMBLY
127.06.00
1
7
TORSIONAL VIBRATION DAMPER ASSEMBLY
12VB.07.00
1
8
INTAKE LINE ASSEMBLY
127.08.00B
1
9
EXHAUST LINE ASSEMBLY
127.09.00A
1
11
NATURAL GAS PIPELINE
127.14.00
1
12
MEGNETO TRANSMISSION ASSEMBLY
127.15.00
1
13
OIL PUMP ASSEMBLY
12V.17.00C
1
14
OIL FILTER ASSEMBLY
12VB.18.00B
1
15
CENTRIFUGAL FILTER ASSEMBLY
12VB.19.00
1
16
LUBRICATING PIPING
127.20.00
1
17
OIL COOLER ASSEMBLY
12VB.21.00
1
18
WATER PUMP ASSEMBLY
12VB.22.00B
2
19
Cooling line system
127.24.00
1
20
INTER-COOLER ASSEMBLY
12V.27.00
1
21
HAND PRIMING OIL PUMP ASSEMBLY
12V.29.00
1
25
OVERSPEED SAFETY DEVICE
12VB.37J2.00
1
26
SPECIAL TOOLS
127.42.00
3
27
COUPLING ASSEMBLY
163.44.00
1
29
ELECTRIC STARTING SYSTEM
127.46D.00
1
30
OIL PUMP BRACKET ASSEMBLY
12VB.48.00
1
31
CARBURETTER ASSEMBLY
127.86.00
2
32
NATURAL GAS PRESSURE REGALATING VALVE
127.87.00
1
33
GOVERNOR CONNECTION ASSEMBLY
127.89.00
1
35
Electromagnetic valve
127.91.00
1
36
TURBOCHARGER ASSEMBLY
127.20GJ.00EB
2
Application
Jinan Guohua Green Power Equipment Co.,Ltd(JNGH),is a high-tech sales &service company of Jinan Diesel Engine Co., Ltd. Established in 2010,JNGH has formed a complete system in sales and after-sales of 190 series engine(jichai brand:6L190,8V190,12V190.16V190) after 12 years experience.
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