Series 3 Fuel Pump Diaphragm Confusion

Hi.
I'm just going over my fuel pump and giving it a refurb (series 3 1978 petrol).
I thought i'd go a bit mad and treat it to the genuine Land rover parts so bought AEU2760 refurb kit. I've fitted the 2 small valves fitted in the top casting no problems. The main diaphragm looked fine at a glance but when I compared them properly they are different.
Old one
New one
So I obviously need the kind with the key on the end not the hole. I've been searching and I can find plenty of kits with the key end but none with the spring and oil seal fitted.

Help me out everyone. Where am I going wrong?
Thanks, Steve.

Sorry everyone. It seems my stupidity knows no bounds tonight. I've managed to post this same thread 3 times somehow. I wonder if there is a grown up who could help me get rid of the extra 2 copies. @bluebeasty maybe?

I'll get me coat.

Spooky things happening tonight, it’s not you
Is the idea you reuse the spring and is there a retainer on old one too
It’s ages since I played with my diesel one

I did think that might be it but having had a better look tonight I don't think so. That oil seal and retainer on my old one must have been put on at the time it was made. It wouldn't go over the key end. I've looked at all sorts of Land Rover related photos and videos and none seem to look like mine. I'm wondering if the pump is off something else altogether. I think that kind of pump was fitted to everything from landies to Triumph TR's to Fergie tractors. My landy is a proper mongrel, maybe it's gathered a few strange bits along the way?

Did the 2a lift pump recently with the kit in the lower pic, no spring and the same thing came out.

I'm going to have to email Paddocks where I got the new kit from and see if they have anything like it.

I had the same problem on my engine - it's a late model 5 bearing one. There's two types of diaphragm floating around, the bayonet type (which you and me have got) and the hole type, which seems to be more common.

The fuel pump is made by AC Delco and was fitted to many, many cars around the same time. Search for 'AC Delco lift pump kit' on ebay and you'll get plenty of bayonet type diaphragms, I bought one sold for a Vauxhall Victor and it fits perfectly.

Link here

I had the same problem on my engine - it's a late model 5 bearing one. There's two types of diaphragm floating around, the bayonet type (which you and me have got) and the hole type, which seems to be more common.

The fuel pump is made by AC Delco and was fitted to many, many cars around the same time. Search for 'AC Delco lift pump kit'

arkas said:

I had the same problem on my engine - it's a late model 5 bearing one. There's two types of diaphragm floating around, the bayonet type (which you and me have got) and the hole type, which seems to be more common.

The fuel pump is made by AC Delco and was fitted to many, many cars around the same time. Search for 'AC Delco lift pump kit' on ebay and you'll get plenty of bayonet type diaphragms, I bought one sold for a Vauxhall Victor and it fits perfectly.

Link here

Click to expand...

That's great. Thanks. I will have a search this evening. Great info.