12J 2.5 NA injector pump bleed screw

Hi Guys

Does anyone know where I can get a new bleed screw and threaded housing for the injector pump on the 12J 2.5 NA Diesel circa '86.

I'm having a bit of trouble with air in the system and after about the 20th time of bleeding the fuel today it finally snapped off. I've managed to withdraw the broken bit, so hoping to source another one.

Thanks.

I don't post a lot on here as generally the search functions have covered all the issues that my LR 90 greets me with (Thank you very much), I did search on this & couldn't find a part number for a replacement bleed screw & Paddocks said it was not available as a separate item & a whole new injector pump was £400+ quid which was steep price for being a heavy handed T**t, I took a punt on ebay & for £5.50 got a "Massey Ferguson Tractor CAV Injection bleed screw" & it appears to be the correct part, it fits & bleeds all ok although I haven't tested over any length of time.