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 425 of 779

1. Position shim (A) of predetermined thickness (fig. 6-

150) on inner race of lower driven gearshaft ball

bearing.

2. Press fan driven gearshaft (B) into ball bearing.

Figure 6-151. Pressing fart driven gearshaft

into lower drive gearshaft ball bearing.

1. Position bearing spacer (A) on fan driven gearshaft

and start upper driven gearshaft ball bearing on

gearshaft

2. Press gearshaft (B) into ball bearing.

Figure 6-152. Pressing fan driven gearshaft

into upper driven gearshaft ball bearing.

(b)

Determine backlash for fan drive bevel

gearshaft.

Position original shims (fig. 6-123) on

end of inner bearing race (side opposite bearing

trade mark) of front bevel gearshaft ball bearing.

Measure total thickness of bearing face and

shim. from shim on inner race to face of outer

race, with end play removed. Thickness should

be from 0.7891-inch minimum to 0.791 1-inch

maximum. When total thickness is more than

0.791 1-inch, strip 0.002-inch thick laminations

from the shim pack until the correct thickness is

obtained. When total thickness is less than

0.7891-inch, add 0.002-inch thick shim s

(stripped from a new shim pack FSN 2930-678-

3271) as necessary. Figure 6-150 illustrates shim

location and measuring points.

6-131