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MG MGA - Oil fill plug, size
I thought I could use my 3/8 inch rachet to unscrew the filler plug on the 5 speed Sierra tranny,so I could fill with tranny oil, now that it is in place and level. Turns out though the square hole is just too small for a 3/8 driver to insert into. The 1/8 inch driver is not large enough.
Does anyone know of a simple alternative to do this? Or will need to grind down a cheap 3/8 inch rachet to fit and if so what is the size I need to reduce it down to?
|Ray. I have done this type of thing for a number of applications. What I do is to find out the required size by measuring the hole using a set of dial calipers. Then, I take a short, hex head bolt of about the diameter of the cross ways measurement and mill/file/grind flats on it, test fitting until it can be inserted to the full depth. Chamfering the front of the bolt (just run a file across it to break the sharp edges) will allow it to be inserted more fully.|
Then, use the proper sized socket for the bolt head, insert the bolt into the hole and turn it out/turn it in as necessary.
|Ray, I'm pretty sure the oil filler plug on my gearbox had a hex hole. I remember using a metic allen key to loosen and tighten it. 10mm seems to ring a bell.|
|Thanks Les and Andy,|
Andy you were right. Once I got a better a pair of eyeglasses and more light to measure the hole I saw I needed a big allen wrench to fit the hole. I got it out, filled the tranny with oil making it one step closer to getting it back on the road.
I got to admit, I'd been looking at that 5 speed tranny for months sitting in my spare bedroom and never gave it much thought to what I needed to unscrew the filler plug.
This thread was discussed between 21/07/2008 and 22/07/2008
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