Aerovent IM-176 - Manual (Page 2)

and held in place by compression. This gives added driving
strength.
Put the bushing loosely into the propeller. Do not press or
drive. Start the cap screws by hand, turning them just enough
to engage the threads in the tapped holes on the propeller. Do
not use a wrench at this time. The bushing should be loose
enough in the propeller to move slightly. Be sure the shaft and
keyway are clean and smooth. Check the key size with both the
shaft and bushing keyways. Slide the propeller and bushing
assembly onto the shaft, making allowance for endplay in the
shaft to prevent rubbing. Do not force the propeller and bush-
ing onto the shaft. If it does not go on easily, check the shaft,
bushing, and key sizes.
Tighten the caps screws progressively with a wrench. Do this
evenly as in mounting an automobile wheel. Take a part turn
on each cap screw successively until all are tightened to the
torque shown in Table 1.
These cap screws force the tapered bushing into the hub,
which in turn compresses the bushing on to the shaft.
WARNING: Do not attempt to pull the bushing flange flush
with the hub end. There should be 1/8" to 1/4" clearance
when tightened.
Removing the Propeller Assembly from
the Shaft
The propeller is easily removed from the shaft by inserting and
tightening two of the cap screws into the tapped holes in the
bushing flange. This forces the bushing loose from the propel-
ler and releases the compression so that the entire assembly
will slide off the shaft.
1. Remove all the cap screws from the propeller and hub
assembly.
2. Start the cap screws into the threaded holes in the bushing
flange.
3. Tighten each bolt part of a turn successively to force the
propeller off the bushing.
4. Pull the bushing off the shaft. If the assembly has been in
place for some time, it may be necessary to use a wheel
puller to remove the bushing. Never use a wheel puller on
the propeller.
5MPP06/04
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5959 trenton Lane n | minneapolis, mn 55442 | Phone: 763-551-7500 | Fax: 763-551-7501
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