Rear disc adjustments?

[motobmx105]

Alright did my rear disc swap from a wagon about a rear ago and I can feel a decrese in performance and the pads are like new still. aren't they supposed to self adjust? I tightend up the e brake handle a bit and they work better? Anyone have an idea?I know the piston in the caliper spins out for adjustment but what makes it adjust? Thanks guys!

[Adan]

Prop valve?..did you swap it for a DA 40/40 one?..

[GunRunner]

Prop valve?..did you swap it for a DA 40/40 one?..

^^this

[motobmx105]

no I have not done the 4040 swap yet but I will next time I hit the jy. But will that help the brake? I've adjusted it and it works good for awhile then is almost like its not even their.?

[illinois_erik]

besides the proportioning valve, you should work the e-brake handle about 20 times. The piston is on a screw. although I didnt do a swap, after rebuilding the calipers and new pads/rotors it didnt seem like it was biting much. I was waiting on my old lady and I had it in neutral and was rolling back a little, I was bored and was working the e-brake, after she got in and I left my pedal felt a little stiffer and the back seemed to bite harder. So maybe you just need to work the piston a bit on the screw.

NOTE: After rear brake caliper servicing, loosen the parking brake adjusting nut, start the engine and press the brake pedal several times to set the self-adjusting brake before adjusting the parking brake.

Block the front wheels, then raise the rear of the vehicle, and make sure it is securely supported.

Make sure the parking brake arm (A) on the rear brake caliper contacts the brake caliper pin (B).


Pull the parking brake lever up one click.

Remove the rear console lid.



Tighten the adjusting nut (A) until the parking brakes drag slightly when the rear wheels are turned.

Release the parking brake lever fully, and check that the parking brakes do not drag when the rear wheels are turned. Readjust if necessary.

Make sure that the parking brakes are fully applied when the parking brake lever is pulled up fully.



Lever Locked Clicks:
Vehicle With Rear Disc Brakes:
6-9

Adjust the parking brake if the lever clicks are out of specification.

[motobmx105]

thank you kind sir, i will be looking at this asap. and i have pulled my ebrake handle about 1000000 times. still no difference, unless the cable adjuster has to be loose?

[illinois_erik]

thank you kind sir, i will be looking at this asap. and i have pulled my ebrake handle about 1000000 times. still no difference, unless the cable adjuster has to be loose?

youre welcome, make sure the little arms the e-brake cable attach to can move easily, mine were rusted to hell, I broke them free, wirebrushed what i could and slathered everything in antiseeze. When I rebuilt them I only did the dust boot and piston o-ring.. theres a way to fully dismantle them but I didnt have the tools to get to the snap ring down in there. Maybe the piston is gummed up, when you did the swap and reset the piston, turning clockwise was it easy or really hard? I lubed up the screw with disc brake grease and it was stiff but not that hard to turn, look at your dust boots and see if theyre all twisted up. The pistons might just be stuck/gummed up..cause man after 20 years there was all kinds of shit in there, I sanded the pistons lightly and polished them up and cleaned them with alcohol and lubed everything up. Good luck