4wd issues after MOT work

Well we're moving anyway, so it's the last time we'll be using them

It's obviously just another case of garage overcharging. Unless you have the skills, space and time you're kind of beholden to them. My husband has the first two but not the latter, unfortunately. I've been charged over £400 for bearings alone before. The hourly rate they charge I'm in the wrong job...

Im in that job, in the end of the day its not much left of the hourly rate im afraid when everything is paid. You get what you pay for in most cases, i dont think 800£ is too much for this job. Remember you also get warranty in that price, so this is something the shop should fix right away(atleast thats how we operate).

Yeah it's pretty obvious it's something to do with the work they did otherwise It's a hell of a coincidence, so I'm hoping the fix is free, as you say. They're usually pretty good actually, and even hunted down and fixed an annoying squeak foc when it was in.

The Oily substance round the inside of the wheel is a symptom of king pin bearing and inner axle oil seal failure. Would have expected that before they replaced them not after, unless they just didn't clean it up after they did the job which is a bit shoddy.

Perhaps a duff new oil seal then? New parts do fail I guess? If it was just not cleaning up after themselves the 4wd would be working surely.

How long/how many miles since the King pins were done? The oil has to make it's way past the inner seal, out of the axle tube, through the (hopefully new) grease in the swivel and out past the dust seal so wouldn't expect to see that for quite a few hundred, maybe a thousand miles after replacement. The king pin bearings or inner seal condition has no effect on the auto hubs working or not. Looks like they've jus not been put back together , (rubber pipes already mentioned) or over greased, when the components were taken apart to replace the King pins etc.