Rear end grinding - Printable Version

Rear end grinding - Printable Version

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Rear end grinding - xrad - 04-17-2009

Not the kind you see at Scores!

Had the rear left wheel off the ground checking something and then i decided to rotate it. Strange grinding noise from under the hat. HAd a set of drilled rotors and new r4s pads to put on so i decided to take the wheel off and see what's up.

Turns out that the front e-brake retaining spring fractured and the front e-brake shoe rotated out laterally. This caused the e-brake shoe pad to fracture and now there is constant metal on metal which had significantly worn the rotor hat with a nice inner groove. Of course, if the rotor broke, the wheel won't fall off, but a free rotor ring could jack up the wheel and caliper.

Sunset had the parts and is sending them out ASAP. 100$ for four shoes and 20-30$ for all 12 of the springs (I bought an extra set..)

Lesson learned: those retaining springs (4 per side)and e-brake shoes are 15 yrs old....might want to have them checked before the next downhill run...

Rear end grinding - flash - 04-17-2009

this happens WAY too often - the cause is that people too often set this PARKING BRAKE while the brakes are hot - that heat is transferred to the fragile pin - this is NOT an e-brake and not to be used as such and also not to be used when hot - the problem occurs the instant that somebody forgets the brake is engaged and then tries to move the car - SNAP! - the pin breaks

rule of thumb - DO NOT set the parking brake when the brakes are hot - unless you are on a slope, leave the car in first instead

Rear end grinding - ds968 - 04-17-2009

QUOTE (flash @ Apr 17 2009, 03:03 PM) <{POST_SNAPBACK}>unless you are on a slope, leave the car in first instead

and hope your starter does not decide to short , while you're somewhere enjoying a cup of coffee or what-not, and catapult your car into whatever is in front of it. yes folks, mine did.

I'd rather have my brake pin/spring snap ( I carry a spare one in the trunk, next to the spare HCV, and the spare DME )

BTW - not the kind of rear end grinding you see at Scores .. [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img] [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

Rear end grinding - flash - 04-18-2009

yeah dan - that was the weirdest thing i've ever heard - lol - only you would have a possessed car

Rear end grinding - xrad - 04-25-2009

For those contemplating brake repair:

1) after removing everything ( have to support the caliper, don;t bend the line...and I just cut off the brake pad wear sensors since I check the often) and cleaning, time to install
2) front shoe first with retaining spring hook facing down so that it locks in place (they come out with a 180 twist)
3) place bottom spring and hook to rear shoe
4) place rear shoe retaing spring with hook facing down
5) wind spreader all the way in and place at top with gear towards the rear (same setup both sides)
6) add top spring
7) replace barrel pin and lower spreader, THEN engage it into place with a big flat screwdriver to spread the shoes. it will fit in place if you do the front end first
8) after all in, I gave the top spreader a few turns to spread the pads, but not so that they touch the disc. P-brake much better now.

NOTE: in pics, not all springs in place, did this side first and found it easier as outlined above. this is driver side.

Good luck!