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 340 of 779

6-21.

Repair

a. General.

Refer to paragraph 6-4.

b.

Torsional Vibration Damper.

Replac e

torsional vibration damper when it does not

conform to limits specified in overhaul standards

(table 6-11). Replace damper when dented or

distorted. Remove minor imperfections with

crocus cloth.

c. Flywheel and Transmission Drive Gear-

shaft.

Repair elongated dowel pin holes in

flywheel and gearshaft by reaming to either

0.005 or 0.010 inch oversize. Install the ap-

propriate

oversize dowel pins. It will b e

necessary to line ream the crankshaft flange,

flywheel, and transmission drive gearshaft to

install the replacement oversize pins.

d. Transmission Drive Gearshaft Bushing-

type Bearing.

When the gearshaft bushing-type

bearing needs replacement, use a suitable arbor

and an arbor pres s

to remove bushing-typ e

bearing as shown in figure 6-42. Press new

bushing-type bearing into gearshaft using arbor

press a s

shown in figur e

6-43. Ream th e

bushing-type bearing from 1.3775 to 1.3780

inch after installation. When oversize dowel pins

have been installed in the crankshaft, trans-

mission drive gearshaft dowel pin holes must be

reamed to the proper oversize dimension.

Figure 6-42. Pressing bushing-type bearing

from transmission drive gearshaft.

Figure 6-43. Pressing bushing-type bearing

into transmission drive gearshaft.

e. Accessory Drive Gear.

Refer to paragraph

6-4h for repair of accessory drive gear.

6-46