I change ring gears quite often. What I do is drill a 5/16" hole into the
side of the ring as deep as possible without drilling into the lip on the
flywheel, then hacksaw between the teeth into the drilled hole. I do two
holes 180 degrees apart. Then comes the large chisel and BFH. A couple good
wacks ( hit it like you mean it ) and it is off.
I then deburr the ring mounting surface, making sure it is completely
smooth. Then I'll throw it into the freezer for at least two hours. Take the
new ring gear and deburr it also. Then put it into the oven at 350 degrees
for about one to one and a half hours.YOU DO NOT WANT TO HEAT THE RING GEAR
RED HOT AS THAT WOULD REMOVE THE TEMPER FRON THE METAL! The proper
tempurature is when it just starts to turn blue. Set up a couple of wood
blocks to set the fly wheel onto so it won't rock. Take the fly wheel from
the freezer and set it on the wood blocks. Wearing your heavy gloves and
with two large pliers, take the ring gear from the oven and set it into
place on the flywheel. Go turn off the oven and close the freezer door. Have
a beer . The flywheel will then be ready to install
Two hints. Do a dry run with the ring gear and pliers.
MAKE SURE YOU HAVE THE RING GEAR TURNED IN THE PROPER DIRECTION. If you
don't , then you get more practice doing everything over again.
----- Original Message -----
Sent: Friday, June 27, 2008 6:37 AM
Subject: [Mgs] ring gear removal
> Supposed to be fairly straight forward, the shop manual and various notes
> on the internet say pretty much the same thing. I don't have a
> oxy/acetylene outfit so I've cut through as far as I can with a hacksaw
> (the shoulder of the flywheel prevents cutting all the way through).
> Dozens of mightly wacks on a big chisel with a mallet didn't seem to do
> much though. I was standing the flywheel on edge, on a piece of wood and
> hitting down. Maybe the wood was absobing too much of the force. Should I
> have placed the flywheel flat side (engine side)down and tired to split it
> that way? I've never had much luck with chisels.
> '66 MGB
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