FUEL INJECTION NOZZLES
Removal
And
Installation
disconnect the fuel lines.
Remove the nut and the yoke [A].
Remove the
nozzle. Use a nozzle puller
if
necessary
(PIN
003-0463 extractor and 003-0536 slide hammer) [B].
Injection
Disassembly
And
Repair (In
The
Shop)
The tools listed will be needed to do the following
procedure:
OEM1064 - Diesel Fuel Injection Nozzle Tester
OEM1065 - Accessory Kit
Special equipment is needed for service of injection
nozzles. The
following procedures are given only for
cleaning and inspection.
Clamp the body of the injector valve
in
a vise. Remove the
lower parts and the internal parts vary carefully
[C]
.
Wash them
in
a clean diesel fuel.
Use a stiff bristle brush (brass) to clean the injector tips.
IMPORTANT
DO
NOT
use
a steel
brush
to
clean
the
injector
tips.
1-2132-0697
Check the needle valve and seat for wear and dirt.
Replace both if either
is
damaged.
Assemble the injector. Check the release pressure and
spray pattern with an injector tester.
(See Section 8A for
SPECIFICA
TlONS.)
NOTE: A
new
sealing
gasket
MUST be
installed
each
time
an
injector
is
replaced.
Installation
is
the reverse of removal.
-7A-~
741, 742, 743, 7430S
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