| The prop flange bushings that came with the engine were
3/8", and the prop and associated hardware that came with my prop is all
7/16". In looking for a solution I came up with two alternatives;
Get new bushings from Lycoming for around $350, or send my 3/8" bushings
off to Aero Sport Power (Bart Lalonde, 800-667-0522 250-376-2955
proair@mail.ocis.net) and he
would drill and tap them to 7/16". I decided on the latter due to
the fact it was about 10 times cheaper... So on the way to the
hanger I stopped in to see one of the A&P's out at the airport for help in
getting the old ones out, and as luck would have it, he not only had some
bolts I could use to remove the old ones, he also had two sets of 7/16"
bushings, but no 3/8", so he swapped me... To remove the old bushings I
used a bolt, nut, washer, and socket. See left picture...
Thread the nut all the way up the bolt, put the washer on, then the
socket, and thread the assembly into the bushing. Hold the bolt head
with one wrench and turn the nut counterclockwise to pull the pushing out
of the flange and into the socket. My bolt was a little long so once
I had the bushing loose I had to tap it back in a bit to get the bolt out
before I could get the bushing out, but all in all it was a breeze...
To install the new bushings, use some oil or anti-seize to lube it a
bit and stick it in from the back. Use another bolt with a
appropriate number of spacers or washers and another socket to allow it to
pull the bushing through the flange and into the socket. Using a
ratchet, pulling the bushing into the flange was a simple... |