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 510 of 779

Disassemble

1. Refer to figure 4-60 and 4-62 to remove diaphragm

coupler (A) from injection pump.

2. Remove Woodruff key (B) from pump shaft.

Assemble

1. Position Woodruff key (B) in pump shaft.

2. Refer to figure 4-64 to install diaphragm coupler (A)

on fuel injection pump.

Figure 6-253. Disassembling or assemblin g

fuel injection pump driv e

diaphragm coupler .

b. Cleaning, Inspection, and Repair.

Refer t o

paragraphs 6-2 through 6-4, and (1) and (2) ,

below .

(1)

Drive

splined

coupler.

Refer

to

paragraph 6-42c (7) .

(2) Drive diaphragm coupler.

Whe n

cleaning, Diaphragm must not be immersed i n

fluids or cleaners. Inspect diaphragm (10, fig. B-

16) for cracks, scratches, or mars on rims o r

diaphragms. Inspect diaphragm pack and flang e

coupler (12) keyways for wear or mutilation. I f

diaphragm pack is cracked, do not attempt t o

repair by welding. Replace unserviceable part s

by salvage or replace coupler assembly .

c. Assembly.

Refer to figures 6-253 and 6-252.

6-68. Rebuild of Fuel Injector Nozzle an d

Holder Assembl y

Refer to paragraphs 4-22 through 4-24 an d

figures 4-163 through 4-165 for rebuild of th e

fuel injector nozzle and holder assembly .

6-69.

Overhaul of Piston Oiler Nozzl e

Assembl y

a. Disassembly.

Do not remove nozzles (fig .

6-254) unless the nozzle or holder cannot b e

cleaned without disassembly. To remove nozzles ,

position holder in a soft-jawed vise and remove

nozzles .

b. Cleaning, Inspection, and Repair.

Refer t o

paragraphs 6-2 through 6-4. Make sure oi l

passages in holder and oil holes in nozzles ar e

clean and free of obstruction. Replace nozzle s

and holders as necessary, when oil passages and

holes cannot be cleaned of obstructions .

c. Assembly.

Refer to figure 6-254 to instal l

the nozzle in the holder if removed. Stake nozzles

on three flats, 120 degrees apart .

Figure 6-254. Piston oiler nozzle an d

holder assembly .

6-21 6