Rover 200 & 400 Owners Club

Do the rear disc guide pins have flats on them ?
I’m having a few problems with dragging brake pads on my 91 416 and stripped them down and gave them a good clean up.
However I noticed that they have got flats on the stem of the guide pins. Look too uniform to be wear but I think they are worn and need replacing as none of the pictures I’ve found show a flat on them.

I only have discs on the front brakes of my 214, but the guide pins also have flats, maybe to retain a bit of grease. It's important these can move freely in the caliper body or you could get binding brakes or uneven wear on the brake pads. Yours look in good condition so no problems. If the rubber concertina boots on these guide pins look a bit dodgy, it's worth replacing them as they keep moisture and dirt out of the pin assembly. For my car it was service kit EJP1421.

Cheers,
Hugh

Thanks for that.
Space for the grease seems a likely reason.
Ive had the issue of rubbing brakes on the back before( offside).
No amount of cleaning and regreasing seemed to work.
In the end I replaced the calliper and the problem went away. I think the handbrake mechanism on the rear disc set up can cause this and needs dismantling and cleaning.

I’ve just brought a new calliper as I don’t have time or space at present to strip it and rebuild it to find it still doesn’t work but I’ll use the existing pins as they look ok.
Will replace boots ,as you suggest ,as well which is a good call

Sticky calipers can be the problem. I purchased some remanufactured Pagid calipers for my 216 (fronts) and one of them was a little sticky. I got some scraping noises from one of the front wheels. The trick was to use a G clamp to push the piston back into the body a few times, then refit.

New calipers should solve the problem as long as they have been greased properly and the pistons are free moving. Generally, assembly grease for all of the brake parts including the pins is a good idea.

Yes they all have an internal flat side on mine, probably for grease and to allow air to escape too, otherwise it might be harder for them to move in/out.