Yanmar 6CXM-GTE2 Service Manual download pdf (Page 107)

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(3) Nozzle body identification number

The type of nozzle can be identified by the number on the

outside of the nozzle body.

(4) Disassembly of fuel injection nozzle

1) Remove the bonnet fixing bolts.

2) Lift the valve slowly until it contacts the valve arm

mount (A) as shown in the illustration.

3) Lift the (B) side with (A) as the fulcrum.

4) After removing the stud bolt fixing the bonnet (C)

from the installation hall, move the valve a little to the

reduction reversing gear side and remove the valve

completely.

5) Remove the fuel injection pipe, fuel return pipe and

fuel injection valve fixing nut.

6) Fit the fuel injection valve puller tool.

(Place the foot of the support bolt on the plane making

an right angle to the fuel injection valve.)

7) Adjust the foot length so that the puller tool body

makes a right angle to the fuel injection valve and a

distance of about 20 mm is ensured for the injection

valve.

8) Apply lube oil to the puller bolt and screw it to the

return oil joint bolt hole of the upper injection valve

body to remove the injection valve body.

(5) Check and cleaning of fuel injection nozzle

1) Check the carbon flower deposit around the injection

hole.

2) Check spray condition with nozzle tester operating the

lever 2-3 times per second.

࡮No sharp angle deviation

࡮Uniform atomized fuel

࡮No dipping after stopping

3) Wash the nozzle in clean diesel oil with the nozzle

cleaning kit.

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Yanmar 6CXM-GTE2 Service Manual Page 107