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Spray condition detection of Mitsubishi S6R diesel engine injector


Detailed Description:

Spray condition detection of Mitsubishi S6R diesel engine injector

While adjusting the pressure on the test bench of the Mitsubishi S6R diesel engine injector, check the nozzle clogging, spray status, and whether there is oil leakage in the nozzle. When the spray is bad, clean or replace the nozzle.

The atomization detection items are as follows. Shot straight. No large particles, fine spray. After spraying, there are no residual oil drops in the spray holes.

2.3.3 Injector cleaning and replacement

(1) Remove the sleeve nut.

(2) Remove the injector.

(3) Clean the needle valve and valve body of the fuel injection nozzle.

Use clean cleaning oil and assemble the needle valve and valve body in clean diesel after cleaning.

(4) The sleeve nut of the fuel injector shall be tightened according to the specified torque.

(5) If the spray state does not improve after adjustment and cleaning, replace the fuel injector with a new one.

The new fuel injector is coated with rust inhibitor, and it must be cleaned with cleaning oil at first, and then cleaned with diesel oil before assembly.

2.3.4 Spring angle, free length,

And parallelism measurement

Measure the straight angle, free length, and parallelism of the nozzle spring.

Test items

Part number of the spring

standard value

Free length

37561-26400

30 mm

48726-00402

26.8 mm

Right angle

37561-26400

0.6 mm or less

48726-00402

Below 1.25 °

Parallelism

37561-26400

0.1 mm or less

48726-00402

0.65 ° or less

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