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Injector Nozzle, Disassemble and Assemble
 Remove
Remove injector nozzle – see operation "Injector Nozzle,
Remove and Install".
Disassemble
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Clamp nozzle holder (1) in vice. Unscrew union nut (8).
Remove nozzle body (7), nozzle needle (6), spacer washer (5),
pressure pin (4), thrust spring (3) and thrust adjustment washer
(2) – note installation position of components.
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Caution
Ensure absolute cleanliness.
Injector nozzle components are not interchangeable – note
arrangement.
 Clean
Use cleaning unit. Clean all injector nozzle components in clean
diesel fuel. Do not use metallic objects or emery paper to remove
dirt. Remove soot from nozzle needle with wooden spatula soaked in
diesel fuel.
Do not touch ground nozzle needle surfaces with hand.
Inspect
Cleaned nozzle needle must move freely in the nozzle body and
slide into the nozzle under its own weight.
Check nozzle needle and nozzle body for damage and wear.
Caution
Do not touch the stem of the nozzle needle. Do not confuse
nozzle bodies with nozzle needles.
Assemble
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Insert thrust adjustment washer (2), thrust spring (3), pressure
pin (4), spacer washer (5), nozzle needle (6) and nozzle body (7)
into nozzle holder (1) – note installation position of
components.
Attach union nut (8) to nozzle holder (1) – tightening
torque – 80 Nm / 59 lbf. ft.
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Install
Install injector nozzle – see operation "Injector Nozzle,
Remove and Install".
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