FU-8 FUEL SYSTEM Injection Nozzle
COMPONENTS
Nozzle Holder Body
Pressure Spring
Distance Pipe
Nonie Holder Retaining Nut
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Adjusting Shim
·Pressure Pin
Nonie Assembly
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DISASSEMBLY , CLEANING AND TEST OF
INJECTION NOZZLE HOLDER
1. DISASSEMBLE INJECTION NOZ .ZLE HOLDER
(a) Using SST. unscrew the nozzle holder retaining nut
SST 09268-64010
CAUTION: When disassembling the nozzle holde r,
be careful not to drop the inner parts.
(b) Remove the pressure spring, shim, pressure pin. dis-
tance piece and nozzle assembly.
2. NOZZLE CLEANING
(a) Use a wooden stick and brass brush to wash the
nozzles.
Wash in clean diesel fuel.
NOTE: Do not touch the nozzle mating surfaces with
your fingers .
FUEL SYSTEM - Injection Nonie
FU-9 ·
(b) Use a wooden stick to remove any carbon adhering
to the nozzle needle tip.
(c} Remove the carbon from the exterior of the nozzle
body (except wrapping angle) w ith a brass brush.
(d) Inspect the seat of the nozzle body for bums or cor-
rosion.
(e) l~spect the nozzle needle tip for damage or corro-
sion.
If any of these conditions are present. replace the nozzle
assembly .
3. SIN KING TEST
(a) Wash the nozzle in clean diesel fuel.
NOTE: Do not touch the nozzle mating surfaces with
your fingers .
(b) Tilt the nozzle body about 60 degrees and pull the
needle out about one third of its length.
(cl When released, the needle should sink down into the
body vent smoothly by its own weight.
(d) ~epeat th is test rotating the needle slightly each
time.
If the needle does not sink freely, replace the nozzle
assembly.
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