TM-9-2815-200-35
ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)
TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS
TM-9-2815-200-35 - Page 167 of 779
Disassemble
1. Remove fuel injector nozzle assembly (K), with nozzle
body (K-1) and nozzle valve (K-2) from valve stop
spacer (L).
2. Remove valve stop spacer (L) and nozzle opening
pressure adjusting spring (N) with spring upper and
lower seats (D and M) from holder body (A). Do not
remove the spring adjusting upper and lower spacers ( B
and C) from spring upper seat (D) unless ajustment of
the nozzle opening pressure is necessary during testing
of the fuel injector nozzle and holder assembly ( para 4-
17).
3. Remove and discard preformed packing (E) from
holder body (A).
4. Disassemble fuel injector nozzle assembly (K) by
removing nozzle body (K-1). It may be necessary to
soak the nozzle assembly in carbon removing solvent to
aid in disassembly. It may be necessary to tap nozzle
body downward on the edge of a wooden bench or other
similarly soft surface to remove valve.
Note.
The nozzle body and nozzle valve are
fitted individually during manufacture to form a
mated assembly. Individual parts are not in-
terchangeable. Therefore, extreme care must be
taken during the cleaning, inspection, and repair
operations to keep these parts mated.
Assemble
Note.
During assembly, the addition o r
removal of spring adjusting spacers to obtain the
correct gage pressure reading on the nozzle tester
may require various combinations of spacers
available in shim set -5365-235-1941. Although
each nozzle assembly pressure reading may vary,
experience will indicate the approximate spacer
thickness or combination of spacer thickness
required to make up pressure differences. The
nozzle assembly must be completely assembled,
torque tightened and checked again on the
nozzle tester to assure proper spacer combination
and pressure reading. This procedure may have
to be repeated several times before achieving a
satisfactory reading.
1. Assemble nozzle valve (K-2) in nozzle body (K-1) to
form fuel injector nozzle assembly.
2. Install a new preformed packing (E) in holder body
(A).
3. Install spring upper seat (D), with spring adjusting
upper and lower spacers (D and M) in end of nozzle
opening pressure adjusting spring (N). Install spring
lower seat (M) in opposite end of spring (N) and install
assembled spring and valve stop spacer (L) in holder
body (A).
4. Install fuel injector nozzle assembly (K-1 and K-2) in
valve stop spacer (L).
Figure 4-170. Disassembling or assembling fuel injector nozzle components.
4-85
Back to Top
