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 121 of 779

Note .

The fuel injection pump diaphrag m

coupler parts are not matched sets, and parts are

interchangeabl e

between assemblies. Th e

coupler hub and pilot ring on the drive shaf t

need not be removed or replaced unless they are

damaged. Check torque tightness of nut securing

coupler to drive shaft (900 lb-in.) .

Figure 4-76. Fuel injection pump diaphrag m

coupling and pilot ring on hub before pum p

installation .

Note.

Be sure lower right fuel injection pump

mountin g

bolt is inserted in injection pum p

before pump is seated on mounting base. I t

cannot be installed with pump in position. Refe r

to figures 4-55 and 4-56 to secure pump to base.

Figure 4-77. Installing fuel injection pum p

assembly on engine .

Note.

Be sure preformed packing (fig. 4-63) is

installed in coupler sleeve .

1. Postion fuel injection pump coupler sleeves (A)

making sure timing marks on bearing retaining plate

and coupler hub remain alined as shown. These marks

must be alined before attempting to assemble the

coupler.

2. Loosely position four lock plates, lock washers, and

bolts (B) in drive shaft coupler sleeves. These bolts will

not be tightened until gear backlash has been removed,

with timing marks on pump alined as instructed in

figure 4-79.

Figure 4-78. Positioning fuel injection pum p

coupler sleeve s-splined coupler .

4-39