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MG Car Repair/MGTD Gearbox


MGTD gearbox
MGTD gearbox  
I am rebuilding my MGTD transmission-on assembling it I notice that the selector shaft that the reverse gear selector fork slides on is open to the rear of the gearbox case. It it hollow with a threaded end for a possible plug (the factory schematic shows a plug listed). But my gearbox has no plug, and I don't think the shaft has an oil passageway that goes anywhere. See picture attached. Can I leave this shaft open w/o a plug or must I make one up?

Hi Ken.

The shaft does require a plug, so you will have to make one.  The original plug was just a grub screw with a slot for a screwdriver.  Please note that the thread is fine metric 8x1 mm, as are all the studs, nuts and bolts on this gearbox.  Even the gear knob has the same pre-war French metric thread.

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Barrie Jones


MG Sports Cars from 1949 to 1980 - Including MGB, MGBGT V8, TF1500, TF, TD and modern Midgets. I also specialise in SU carburettors, Lucas wiring, suspension, steering & brakes.


I have owned my 1955 TF1500 since 1966. Technical specialist for the TD and TF with the MG Car Club T Register. Also owned 20 MGBs and currently own an MGBGT V8. Written 3 books on MGs and produced a DVD on how to strip and rebuild the TD/TF gearbox.

MG Car Club.

Barrie's Notes on the 1953-55 MG TF (author). /=====/ Barrie's Notes on the MGB (author). /=====/ Barrie's Notes on the MGB GT V8 (author). /=====/ The Essential Buyer's Guide to the MG TD, TF and TF1500. (author)

M Phil, C Eng, BSc (Eng).

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