Mark:
My experience has been that the only sure way to know the
condition of the gears is to put the box in a car and drive it.
That said, here are a few tips on how to judge the appearance
of the gears:
On first and reverse make sure that the edges of the teeth are
parallel to each other ( holding the gear with the shaft parallel
to the ground and looking toward the centerline of the shaft.
If the profile when looking from this angle is wedge shaped, the
box will tend to jump out of gear.
On 2nd, 3rd, and 4th gears, look at the shape of the thin gears
which engage the sliding hubs. Look also at the splines on the
sliding hubs which engage these gears. The thin gears should have
a profile (again, looking toward the centerline of the shaft which
looks like a house with a pitched roof:
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/ \
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If the profile looks lopsided or has the corners rounded off, you may
have trouble with jumping out of gear.
Sources of gears:
I was able to get some NOS gears for my gearbox from Sports and Classics
(203-655-8731 - I have no connection with these guys, just an occasional
customer).
SC Parts and AH Spares advertise that they will rebuild your laygear by
welding on a new first gear. I have heard mixed reviews for this solution
on this list. I was lucky enough to find an NOS laygear several years ago.
Good luck.
Peter Schauss
Long Island, NY
1980 MGB
1963 BJ7
-----Original Message-----
From: owner-healeys@autox.team.net
[mailto:owner-healeys@autox.team.net]On Behalf Of Mark and kathy
LaPierre
Sent: Sunday, October 14, 2001 11:01 PM
To: healeys@autox.team.net; mgs@autox.team.net
Subject: Gear Questions
Listers,
I have both a BN2 and a BN4 Healey transmission that I am attempting to
make one complete unit. My questions are as follows:
- 2nd,and 3rd gears and the input shaft look good and feel good but I
noticed some wear on the very small teeth on each of these. Not all the
way around but in various areas.
They appear to be more squared off than the rest. Will this cause a
major problem in
shifting or excess noise when in use. Are they usable as is.
- A couple of teeth on the 1st gear are a little burred or slightly out
of shape
compared to the rest. And also there is a slight gouge or pit on the
1st gear lead hub
area. Can these areas be lightly filed to bring them back closer to original
or will that ruin
the hardening on the surface.
- Does anyone have a useable laygear or better gears than I mentioned
above that they
would want to part with. I have accumulated a couple of overdrive
units and other
excess trany parts if someone cares to barter or cash would be an
option too.
- I could send pictures if that would help explain the gear conditions.
Thanks for any help or your ideas, Mark
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