Oil sump plug key for 1397cc, b14 engine in a 1990 340GL.

Post by **max.headroom** » 18 Aug 2004 09:39 pm

Does anyone know what size of allen key? (3/8 or 10 mm will not fit) that will loosen the oil sump plug. I've seen a special key in the Haynes manual, how would I get one - dealers won't supply.
Banzai,
Max.

Post by **5lab** » 18 Aug 2004 11:06 pm

its not an allen key on mine - its a square plug. i just use my socket set - the 'big' square drive part on it is just the right size. so probably 3/8", square type

Post by **Janitor** » 19 Aug 2004 03:58 pm

yeah 3/8's on mine-i just use 3/8 drive ratchet with extension bar on

Post by **max.headroom** » 22 Aug 2004 05:43 pm

Thanks for the info.
Sorry for the delay in getting back to you - eventually tracked down a 3/8 square drive at Halfords. Did the trick.
Cheers...

Post by **Janitor** » 23 Aug 2004 06:43 pm

3/8's is more popular than 1/2" these days-dont know why-does size matter?

Post by **foggyjames** » 26 Aug 2004 02:40 am

I have a 1/2" drive challenger imperial socket set which belonged to my grandfather....nothing like 'proper' pro quality tools (not that I have very many!).

In case anyone ever wants to borrow it, I have the special socket available to remove the oil pressure switch. It's not that rare, but a Britool (nice) 24mm DEEP socket with 1/2" drive....a fairly unusual combination!

cheers

James