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Morgan +4 Forum

Moss Gearbox, 1956 +4

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Walden MG-Morgan Avatar
Walden MG-Morgan Barrie Walden
Falmouth, MA, USA   USA
Hello,
I have a Morgan plus/4 with a Moss gearbox problem. The gearbox has not been used for more than 30 years, and the unit has little or no oil. I added oil and realized the unit would only move left and right, not in and out. I took off the top cover and managed to work the selector rods using a wooden stick and lots of oil. Unfortunately, replacing the top did not help move the main gears except the one having reverse which runs very well. I pressed my foot on the third gear lever and it moved slightly. A little pressing and releasing resulted in second, third and top gears moving correctly (?). The first gear cannot move and I don’t want to push any harder.

Does anyone have any suggestions? I would rather not rebuild the gearbox.

Barrie

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mhmalone Morgan Malone
Swansea, MA, USA   USA
If it's bound up it should get rebuilt. Bound up means corrosion somewhere and corrosion will accelerate wear (bad). If you just want to get it unstuck, try filling it up with marvel mystery oil and let it sit. Be very careful trying to force it.

Walden MG-Morgan Avatar
Walden MG-Morgan Barrie Walden
Falmouth, MA, USA   USA
Morgan,

Thanks for your email. I actually checked the gearbox’s inside a year ago and filled it with oil. I haven’t had time to work on it again until recently. The inside still looks very good – no sign of rust. I will fill it with mystery oil as you suggested, but I would like to know exactly what’s going on with the first gear problem. This is usually because the gear won’t release rather than the gear won’t push it back in place.

Barrie Walden

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DuncanCharlton Avatar
DuncanCharlton Duncan Charlton
Elgin, Texas, USA   USA
1931 Morgan 3 Wheeler "Gwenda (Sold)"
1967 Morgan 4/4 "Toly's Car"
1967 Unknown Unknown
1970 Mini Countryman    & more
I wonder if these guys could be convinced to produce this gearbox with a Morgan input shaft.

http://tinyurl.com/ydfrzgx6

Duncan

perry911113 Avatar
perry911113 Peter Perry
Rensselaer, NY, USA   USA
1951 MG TD "Barn Find SOLD"
1958 MG MGA 1500
1959 MG MGA "MGA Rally Car"
1970 MG MGB GT "SOLD"    & more
Hi.
I work at Morgan Motors of New England. We provide in house rebuild services for your Moss gearbox. We also can provide all of the needed parts for the gearbox rebuild.
The owner Larry Eckler is a specialist with both TR engine and Moss gearbox rebuilding.
Please feel free to call me or email with questions.
Cheers
Peter
518-329-3877
morganspares@taconic.net

BuyBritish Rob D
Ipswich, Suffolk, UK   GBR
Peter thank you for your info on gearbox,

I found that initially I could not get first, this was rectified by tightening the castle nut pulling the main shaft rearward looks like a combination of the plunger in the rear first gear cluster and the groove in main shaft and the proximity of the rear bearing to the cluster

Please pass my regards on to Larry he is a lovely man and well know in the Morgan world

Rob Davies (UK England)

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