[jmiesse]

I recently replaced pads. Driver side rear caliper piston is not snug with the pads. I rotated the piston to make it tighter 2 weeks ago. I could wiggle inboard pad. After rotating all was ok.

Now the problem is back. I reached in between the wheel and was able to wiggle the pad. This is causing long pedal travel. The passenger side is fine.

Is the self adjusting mechanism not working?

Any suggestions?

 

[jmiesse]

I adjusted the park brake so lever distance is 76 mm. I took the caliper off. I turned in the piston all the way until it wouldn't go in any further. Funny thing is while doing this I heard a click. Also when turned in the piston it just kept turning after it was fully seated. I am not sure if that is ok.

I took it around the block and pedal is back and pads are snug against the rotors....

Only time will tell .....

 

[Green Ghost]

The piston will keep spinning when all the way in so you are OK on that.
Can’t tell you what the click was?? I don’t remember any click when doing mine.

Only thing I can suggest (and you seem to have already done this) is to just redo that caliper, and be sure the slides are good and lubed and is sliding good.

 

[apk919]

The piston will keep spinning when all the way in so you are OK on that.
Can’t tell you what the click was?? I don’t remember any click when doing mine.

Only thing I can suggest (and you seem to have already done this) is to just redo that caliper, and be sure the slides are good and lubed and is sliding good.

+1

The click might be the "one way clutch" in the caliper housing... but yeah, the piston keeps spinning even after it's retracted all the way. Once the piston is flush with the rubber dust boot, it's completely retracted.

 

[jmiesse]

Thanks for your input. I think all is ok now. The park brake adjustment was way off. So I am sure that helped. I just dont know why the resting position of the piston was so far away. Worst case scenario.... I will have to get a rear caliper for a 1992 Dodge monaco. Its like 60 bucks.

Read this..... Really interesting....
Brembo Caliper - SELOC TechWiki

 

[apk919]

Thanks for your input. I think all is ok now. The park brake adjustment was way off. So I am sure that helped. I just dont know why the resting position of the piston was so far away. Worst case scenario.... I will have to get a rear caliper for a 1992 Dodge monaco. Its like 60 bucks.

Read this..... Really interesting....
Brembo Caliper - SELOC TechWiki

Thanks for the link, that's cool information. EliseParts.com sells a reconditioning kit for the rear brakes too... I just refreshed a few components myself: http://www.lotustalk.com/forums/f91/rear-brake-dust-shield-69885/#post1264157

 

[40mmBrakes]

The Renault caliper doesn't have the same reach over the rotor, so should not fit. The clutching system to adjust the parking brake (i.e. piston position) is a friction system and does not click.

 

[jmiesse]

All I know is so far so good.... caliper is working properly.

 

[smokin orange]

Great Brembo repair link...lots of good stuff

 

[40mmBrakes]

The Brembo repair info is originally from here: Brembo History

 

[jmiesse]

Brake maint.

I did a brake flush today to get ready for next track day. I used Wilwood racing fluid. Brakes feel even better! I used a gatorade bottle and 1/4 in. clear vinyl tubing to catch old fluid. I punched a hole in the lid of the bottle and slid tubing in. No need for wheel removal.

Its amazing how dark the old fluid was. Motive pressure bleeder pump is definitely the way to go.

I also did the brake pedal adjustment. Now that was interesting! The first time I slid under there I thought I was gonna need to call the fire department to get me out! anic: If you are claustrophobic this is not a task to do!I was pinned between the seat and steering wheel. After getting out of the pin a couple of times I got used to it. I moved the pedal forward.

Lotus Elise Maintenance, Brake Pedal Height Adjustment