4-41. BLOWER REPAIR (Cont)
Rotate rotors (6 and 7) to bring flat in
spline on shafts in alinement and
Install original number and thickness
of shims (18) on shafts of rotors (6
and 7) that were removed at
Lubricate serrations of shafts of rotors
(6 and 7) with engine oil.
Place teeth of rotor gears (12 and 17)
so missing teeth on inside of gears
are alined and facing same direction
as missing teeth on shafts of rotors (6
Using a soft-headed hammer, drive
gear (12) on shaft of rotor (7) and
gear (17) on shaft of rotor (6).
Install bolt (13) into end in shaft of
rotor (7). Install spacer (16), shaft (14)
and deflector (15) in shaft of rotor (6).
Place folded rag between rotors to
prevent gears (12 and 17) from
turning. Torque bolt and shaft to
100-110 Ib-ft (136-150 N-m).
Reverse blower assembly. Install
spacer (27), disc (26), key washer
(25) and bolt (24) to rotor (7). Aline
tang on key washer with groove in
disc. Torque bolt to 55-65 Ib-ft
(75-88 N-m). Bend one tang of key
washer into groove in disc and two
tangs against side of bolt head.
Remove rag from rotors.
Install four 5/16-18x1 7/8-inch bolts
with flat washers through holes in
each end plate (top and bottom) to
blower housing. Torque bolts to
13-17 Ib-ft (18-23 N-m) (bolts are
temporarily securing blower housing
to end plates to determine clearance
between rotors and end plates).