Mechanical clutch assembly

on end of inner bearing race (side opposite

(b) Mechanical clutch assembly. R e f e r

bearing trade mark) of lower driven gearshaft

t o figures 6-148, 6-144, 6-138, 6-136, 6-135, 6-

ball bearing. Measure the total thickness of

133, and 6-131 through 6-129.

b e a r i n g race and shim, from shim on inner race

N o t e . When positioning balls in fan drive

to supper face of outer race, with end play

hub, place a dab of grease, (GAA) FSN 9150-

r e m o v e d . Thickness should be from 1.2635-inch

190-0905, on each ball pocket to facilitate

minimum to 1.2655-inch maximum. When total

k e e p i n g balls in proper location during assembly.

thickness is greater than 1.2655-inch, strip

(2) Front fan drive housing. R e f e r t o

0 . 0 0 2 - i n c h thick laminations from the shim pack

figures 6-127, 6-150 through 6-152, 6-124, 6-

until the correct thickness is obtained. When

153, 6-122 through 6-119, and (a) and (b),

total thickness is less than 1.2635-inch, add

below.

0.002-inch thick shims (stripped from a new

N o t e . Before assembly of the front fan drive

shim pack FSN 2930-678-3271) as necessary.

housing it will be necessary to determine the

shim thickness required to control the end play

Figure 6-150 illustrates shim location and

o f fan driven gearshaft and tbe backlash of fan

measuring points.

drive bevel gearshaft.

(a) Determine end play for fan drive

g e a r s haft. P o s i t i o n o r i g i n a l s h i m s ( f i g . 6 - 1 2 6 )

Figure 6-150. Determining shim thickness for front fan drive

gearshaft and drive bevel gearshaft.

6-130