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 514 of 779
Section Il. ASSEMBLY OF ENGINE FROM SUBASSEMBLIE S
7-4. Genera l
This section covers the assembly of the engine
from subassemblies. Components are groupe d
together in proper assembly order. The crank -
case assembly was partially assembled durin g
rebuild of engine component s
(Chapter 6) .
Normally the crankcase assembly will be on the
overhaul stand after it has been inspected and
the main bearing bosses have been checked. In
case crankcase is not on stand, install o n
maintenance and overhaul stand - 4910-856 -
4137 (fig. 6-8) and rotate stand so that oil pan
flanges are up .
7-5. Starter Drive Gearshaft, Generato r
and Idler Gears, Piston Oile r
Nozzles, and Crankshaft and Connect-
ing Rod Assembl y
Refer to Table 7-1 for illustrations and as -
sembly instructions . References are listed in the
table .
Table 7-1. Starter Drive Gearshaft, Generator and Idler Gears,
Piston Oiler Nozzles, and Crankshaft and Connecting
Rod Assembly
Component
Reference
Starter Drive Gearshaft and Generator and Starter Idler
Para 7-5a, Figs. 5-184, 5-183, 7-1, 5-181
Gears
Piston Oiler Nozzles and Crankshaft and Connecting Rod
Fig. 5-180, Para 7-5c, Figs. 5-179 through 5-175, 7-2, 7-3,
Assembly
5-173, 7-4, 5-172, 5-171
a. Starter Drive Gearshaft and Generator and
Starter Idler Gears.
Refer to figures 5-184, 5 -
183, and 5-181 and to the instructions given in
(1) and (2), below .
(1)
Starter drive gearshaft bearing cage .
There are two types of bearing cages being used
on the engine. Early bearing cages have a flush
mounting face and require the use of a sealent .
Late bearing cages have a machined recess t o
accommodate a preformed packing. Whe n
overhauling an engine, do not attempt to use a
preformed packing on a bearing cage that doe s
not have a machined groove to accommodate the
packing .
(2)
Generator and starter idler gears.
Instal l
generator idler gear and assembled ball bearing
retaining ring toward rear of crankcase in th e
same manner as the starter idler gear .
Note.
Retaining ring securing ball bearing
in starter idler gear must be toward rear o f
crankcase when idler gear is positioned in crank-
case .
1. Install new preformed packing (A) on idler gearshaft
(C).
2. Position starter idler gear (B) and a line with idler
gearshaft bore in crankcase.
Figure 7-1. Installing starter idler gear .
7-2
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