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SteveHobart

Single Rail Oil Change Advice

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Hi all!

 

I’m just trying to change the oil in my single rail gearbox. It appears that the fellow who owned the car before my has partially rounded off the fill but.

 

Can someone please confirm:

- the proper size of the filler nut

- any tips for removal

 

Cheers

 

Steve

 

 

Sent from my iPhone using Tapatalk

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If you have access to a welder, you can weld on a large nut and undo it with that.

Or try and reverse a 1/2" drive extension bar, pushing the female end over the square on the plug and undo with a spanner on the square end.

One of those old school ratchets with the push-pull square drive in the middle might work if you remove the 1/2" drive part.

A double hex socket might tap on if you have a size that fits snugly

A Stillsons wrench might get it but probably mangle it too

Thread should be 1/2" NPT ( 3/4"-14 tapered) or possibly BSPT, best to double check with the drain plug (same plug size I believe) as there is 1 tpi difference in the two.

Sent from my CPH1607 using Tapatalk

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i had to google what they have even(been well over 10yrs since i've had one)

 

i remember having to file the rounded off nut to a smaller size to get a different socket on one once

 

looking at it in the pics below.. if you got despeate(saw a video recently where someone said make sure you can undo the filler, before draining the oil... good tip)  but it looks like you could fill it from the speedo drive if need be.. but you'd need to make sure you got the correct amount of oil in. 


 

 

s-l1600.jpg

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they are one of the easiest gearboxes to remove.
if you have the means, it would be a lot easier to work on... or take back to the builder with a WTF.. undo this please

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