2400 rear brake calliper tutorial

[ThomasK]

Hi Richard,
Some Peugeot 504/604 have very similar rear Brakes with nearly similar mechanisms but 1-2mm longer piston. Maybe in your Brakes someone has used these parts.

The little top at the rear side of the brake pads help to have the piston in the right position so the handbrake mechanism is Working. So no real function just Support.

KR Thomas

[doublegarage]

Thanks Thomas - I didn't know about these Girling brakes being similar to Peugeot brakes of the period - I will do some searching. The only "identical" (looking) usage I could see was for DeTomaso Pantera - and that's never a cheaper way to buy parts.

Maybe some useful pics here on this guy's Pantera rear brake page
http://www.panteraplace.com/Sub1/page306.html
His new pads also have the pip on the back that interfered with the slot on my piston

The only part I was able to compare size Left to Right was the inner piston (since i replaced the left side one so had the old one in a bag) - and they were identical height/thickness left=right. So that leaves the outer piston and the floating plate that could be different.

Anyway, they're working now. Thanks to all who posted info above.

-Richard

[2dinos]

Working on a 2400 Spyder rear brakes. The hardware has been restored by reputable shop. Work looks very nice. The issue the left calipers park brake does not work. It does not lock the disk. The mechanisms on the bench works fine. The pad with the spud engages the channel in piston cleanly.

One observation is the new brake cable seems longer than the original. so, in your experience, does the parking brake lever on the rear calipers need to be fully at the rest position when not engaged?

I'm thinking the auto adjust feature might care. I was thinking about trying to put a bushing on the brake cable to take up some travel because the caliper does not auto-adjust into position as is. When the brake lever is pulled all the way up, the travel in the caliper levers seems to be near full travel. Lastly, I'm wondering if there could be an issue with the ratchet components of the auto adjust. Thank you for any input.

[ThomasK]

The handbrake mechanism is quite special on these cars and I have seen brakes working on the bench but with more power put on it, installed on the car and need to work against the resistance of the disc, the ratchet mechanism inside jumps over. That could be the case here, but of course difficult to say from remote. Maybe someone could watch the lever while someone else is slowly engaging it to see whats happening.

[2dinos]

Thanks. it seems the adjuster is slipping at 'full open' (new pads) position. We've been studying it. I wonder if it's just the initial point that the auto adjuster has a problem. May be a thinner pad will expose a better functional zone?