8 Left-hand blower casing
Locking coupling tube
9 Machine screw
10 Locking coupling adapter
12 Drive bushing
Right-hand blower casing
13 Flat washer
Figure 6. Blower assembly.
surfaces of blower casing and blower
(2) Weld cracks in blower casings. Bolt or
mount. Be sure screws are flush or below
clamp blower casings to flat surface
surface of the blower casing to prevent
during welding operation to prevent
interface with the impeller (7) .
warping of casting. Grind welds on inside
of blower casings to allow proper
(3) Place impeller (7) on shaft of gasoline
clearance for impeller. Grind or machine
engine or electric motor.
mating surfaces of blower casings after
counterbore for washers in impeller (13
welding. Remove nicks and burrs with a
and 14) are facing outward toward end of
file and aluminum oxide abrasive cloth.
(4) Insert drive bushing (12) on shaft so that
thin end fits between shaft and impeller
d. Assembly and Installation. (fig. 6). Assemble
(7). Install capscrew (15), lockwasher
the blower and install on the shaft of the gasoline engine
(14), and flat washer (13).
or electric motor as follows:
capscrew to force the drive bushing into
the impeller, locking it to the shaft.
(1) Install blower gasket (1) and fasten blower
(5) Coat mating surfaces of adapter (10) and
mount (2) to engine or motor stand
left-hand blower casing (8) with gasket
assembly with four capscrews (19) and
sealing compound. Fasten adapter to
blower casing with four screws (6). Be
(2) Fasten right-hand blower casing (5) to
sure screws are flush or below surface of
blower mount (2) with four screws (6).
Use gasket sealing compound, type II,
Specification MIL-S-45180 on mating