Sprint gearbox filler plug

[olr159w]

I intend to top up the gearbox and OD oil. I'd forgotten how the filler plug is situated in such a stupid location. Mine already looks nicely rounded on the corners so it should be an entertaining process.

I see standard replacement are available of course but can anyone recommend a replacement plug that has a hex head? Or recessed allen key.

I'm not clear on the thread size and whether its definitely tapered so identifying online is hard

thks

[olr159w]

The old plug came out relatively easily.

In case this tip helps others - I used a UJ from a standard 1/2 inch socket set with the female end over the filler plug, the UJ bent at right angles and a pair of mole grips on the male end of the UJ to provide the turning force. It's fair to say it wasn't seized or super-tight but this improvised arrangement worked well.

[olr159w]

Anyone?

[Robert 352]

I would stay with the standard filler plug if it were me contemplating a change. The flats across the filler plug can be turned with a 7/16 spanner which is difficult to get into position and to turn. Changing to a hex head would not make it any easier to access and to do up and undo. I recessed allen key would in my opinion be that bit more awkward to work into the recess and undo and do up.

I found a 7/16 female pipe plug socket on, in my case, Amazon which cost me a few dollars with the added advantage that it fits several other filler plugs as well.

Robert

[olr159w]

Thanks. I reckon the method I used will work fine as well; it's just that since the corners are rounded from the efforts of a previous assailant I ought to get a new plug.

My thinking was that the right angle of a decent sized allen key would act nicely over the lip in the gearbox casing and locate in a plug hex socket nicely with the long arm of the key facing downwards for easy leverage?

Jury is still out though. I might just use the std with a bit of ptfe tape to ensure a seal without tightening it too much