Rhys Mann Posted May 26, 2023 Share Posted May 26, 2023 Trying to work out what size allen key fits the type 9 gear box before i grind down my 10, 8 and 6! Need to do an oil change and it's such a tight squeeze to get to it I'm not sure what size allen key is required! Any advice welcome, and any tips and tricks for the change appreciated!ThanksRhys Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 26, 2023 Share Posted May 26, 2023 Rhys,Its 10mm but I've always used a chopped 3/8" on mine.You can also get replacement OEM plugs with a square hole that a std ratchet will fit.Ian Link to comment Share on other sites More sharing options...
DanRo Posted May 26, 2023 Share Posted May 26, 2023 Here are a couple of pictures of one I cut with a dremel. It worked well. I think the plug is often tight. The tape is to reduce scratches on the chassis rail. I used an oil pump to drain it and a large oil syringe body as a funnel to fill from above. Patience is definitely a virtue in the process. There is another recent thread on it from a few months back. Link to comment Share on other sites More sharing options...
Rhys Mann Posted May 26, 2023 Author Share Posted May 26, 2023 Thanks for the reply Ian, don't think I could fit a ratchet up through the gap!! Link to comment Share on other sites More sharing options...
Rhys Mann Posted May 26, 2023 Author Share Posted May 26, 2023 Just seen the thread!! Sounds like a fun job!! Link to comment Share on other sites More sharing options...
Dan R Posted May 26, 2023 Share Posted May 26, 2023 The best advice i had when doing mine, although a different type of box, was to make sure you undo the fill plug first, as you dont want to have drained it all and then find out you cant open the fill plug. As it turned out this was excellent advice as the fill plug was a complete nightmare to open, where the drain plug was really straightforward. Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 26, 2023 Share Posted May 26, 2023 I cut mine a bit longer. Also slipping a bit of tube over the key to extend the handle gives some extra oomph! Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 26, 2023 Share Posted May 26, 2023 PS - I have a couple of new surplus 3/8 allen keys if you want me to post one, save sacrificing one from your set. Drop me a PM. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 26, 2023 Member Share Posted May 26, 2023 As above + ... on many Sevens you can cut an access hole in the transmission tunnel to give direct access to the plug. (On some there's a chassis member in the way.)... if you use a ratchet wrench on the hex key stub make sure that it's the type that you reverse by moving a lever and not the type where you have to turn the handle over... I may have related this saga before... ; -(Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 26, 2023 Member Share Posted May 26, 2023 "Any advice welcome, and any tips and tricks for the change appreciated!"Detailed notes from Alcester Racing Sevens. (That's now on The Wayback Machine.)But I think that most of the points are now covered in this thread.There's a very large number of threads on this exact topic. Some notes on searching, as many of us can't find what we need using either of the site's two built-in search functions. I suggest trying the one that's in my Signature at the bottom of this post.Jonathan Link to comment Share on other sites More sharing options...
Area Representative paul richards Posted May 26, 2023 Area Representative Share Posted May 26, 2023 A type 9 gearbox doesn't have a drain plug, only a level/filler plug. Hence the need to symphony/pump it out. Link to comment Share on other sites More sharing options...
SM25T Posted May 26, 2023 Share Posted May 26, 2023 #11 .... music may help, if only to drown out your curses Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 26, 2023 Member Share Posted May 26, 2023 Would you like a playlist?: - )Jonathan Link to comment Share on other sites More sharing options...
Nigel Riches Posted May 28, 2023 Share Posted May 28, 2023 My Quaife type 9 has a drain plug, but it's an expensive way of buying one. Have fun with the ground off hex keys, another engineering masterpiece of mashing lots of never meant to fit together bits together. Happy Daze. Link to comment Share on other sites More sharing options...
mikestifel Posted May 29, 2023 Share Posted May 29, 2023 This little gem was in my T9 when I got my car.I was able to get a new plug with a 5/8" square drive on it. Much better, but still very troublesome to get at with the gearbox in the car. Link to comment Share on other sites More sharing options...
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