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 156 of 779

Note.

In stubborn cases, when the nozzle i s

frozen, it will be necessary to remove the fue l

inlet connector from the nozzle and turn th e

nozzle using wrench socket - 5120-875-9556 .

When the nozzle is free of cylinder threads ,

install mechanical puller - 5120-873-6943 in the

7 / 16-20 tapped hole in the end of the nozzl e

holder. Remove nozzle and holder using puller .

Figure 4-152. Loosening fuel injector nozzl e

and holder retainer usin g

wrench-5120-871-7198 .

Remove

1. Remove fuel injector nozzle and holder assembly.

Remove and discard gasket (A).

2. Remove and discard fuel injector nozzle holder

preformed packing (B).

Install

Note.

Use only the dead soft copper gasket -

5310-861-1406 for replacement seal wheneve r

the fuel injector nozzle and holder assembly ha s

been

removed

from

the

cylinder.

The

dead

soft

copper gasket conforms to the specific contour s

of the nozzle cylinder head seat in an individual

installation.

Because

of

this,

it

is

the

only

ap-

proved ga sket for this function and should never

be reused. Before installing new gasket i n

cylinder nozzle seat, always check to be sure that

original gasket has been removed as an inad -

vertent installation of two seating gaskets would

damage the fuel injector nozzle retaining spring .

Check to be sure cylinder nozzle seat is free from

excessive carbon deposit and that the seat face is

free from surfac e

roughness .

Remove carbo n

deposits and /

or surface roughness using nozzl e

carbon cutter - 4910-795-7958 .

1. Install new preformed packing (B) on fuel injector

nozzle holder.

2. Install new gasket (A) and install fuel injector nozzle

and holder assembly.

Figure 4-153. Removing or installing fue l

injector nozzle and holder assembly .

4-74