Help needed cav pump leaking

Hi my pump is leaking around the top of the throttle shaft it is a CAV pump and the landy is a 90 year 1987 2.5 turbo diesel I have been told that I need to take the pump out and get it overhauled ?? I don't know much about this type of thing but any help would be greatly appreciated and where I can get the seals (ect)
Thanks again. Kenny

If you are good with your hands, have a look at this Linky
Or try Mid-Ulster Diesel Services
Diesel Fuel Injection Services (Workshop & Repair Centres) based in the North Street area of Dungannon
Tel: 0288 773 8328

Hi thanks a lot give them a ring now I have to get the pump to them ,
Is it the first one at the top of the page that I need
Cheers