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 533 of 779

Figure 7-28. Correct position of camshaf t

lobes (cams) for fuel injection pum p

installatio n-sectional view.

1.

2.

Using two 5 / 16-in. steel rods (A), hold fuel injection

pump diaphragm pack stationary. Rotate flange

coupling counterclockwise to remove any backlash in

injection pump gear train and bring the advance unit to

the full retard position.

When backlash is removed and timing marks alined,

install four lock washers and bolts (B) and tighten

securely.

Note.

When installing bolts in diaphrag m

coupling, be sure the proper length bolts - FS N

5306-944-7537 are used. Bolts longer tha n

53 / 64-inch can be threaded completely through

the coupling flange and dent the diaphrag m

pack. This will create a high stress point an d

possible premature coupling failure .

Figure 7-29. Removing fuel injection pum p

drive gear train backlash and setting

advance unit retard position -

diaphragm coupling .

7-21