brake piston - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

spoolandslide · 05-21-2008, 06:44 PM

my friend and i are working on his s13
and his rear brake piston fell out
its not really going back in

any expert advice?

SoguRacing · 05-21-2008, 06:47 PM

it wont go back in? well knowing that the ebrake assembly is incorporated into the caliper I doubt that it will do back in. if it fell out that means that the square cut o-ring has probably shriveled and cracked. get a new one about 80 bucks at autozone or a used one 20 bucks from a junk yard or maybe cheaper from a fellow zilvian. they aren't rebuildable.

spoolandslide · 05-21-2008, 06:53 PM

well it is now back in
but wont depress any farther than it was originally

when i changed my brakes i was able to spin the piston clockwise and it just kinda screwed itself in

but this one is being tricky

any other little tricks out there?

*slider2828* · 05-21-2008, 09:03 PM

Remove the cap off the brake reservoir.... THe rears you should turn it with a needle nose plier while pushing... Its in the FSM. Read it. You can also get a square tool from any autoparts store and put it on a ratchet... MUCH MUCH Easier.

deuceforty · 05-22-2008, 10:43 AM

dont forget to open the cap on the master cylinder and the bleeder screw on the caliper

get one of the square brake tools and compress clockwise

Jbma327 · 05-23-2008, 02:18 AM

sounds like your caliper is almost seized up. Try turning it and pressing it in at the same time.

*slider2828* · 05-23-2008, 03:21 AM

Bleeder screw? wtf you thinking.... you will introduce air if you open the bleeder screw open to air...

Forge_55b · 05-23-2008, 03:45 AM

if the piston is not going down even with the brake reservoir open then yeah open up the bleeder. Yes air will probably get in but you might as well bleed the brakes anyhow

deuceforty · 05-23-2008, 05:02 PM

Quote:

Originally Posted by slider2828

Bleeder screw? wtf you thinking.... you will introduce air if you open the bleeder screw open to air...

ever heard of bleeding brakes?

*slider2828* · 05-23-2008, 07:18 PM

yah.... but you can push the piston in without that...

05-21-2008, 06:44 PM	#1
spoolandslide Zilvia FREAK! Join Date: Apr 2008 Location: lost in a bump splice in the fabric of our clockwork Posts: 1,044 Trader Rating: (12) Feedback Score: 12 reviews	brake piston my friend and i are working on his s13 and his rear brake piston fell out its not really going back in any expert advice?

05-21-2008, 06:47 PM	#2
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 35 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	it wont go back in? well knowing that the ebrake assembly is incorporated into the caliper I doubt that it will do back in. if it fell out that means that the square cut o-ring has probably shriveled and cracked. get a new one about 80 bucks at autozone or a used one 20 bucks from a junk yard or maybe cheaper from a fellow zilvian. they aren't rebuildable. __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180

05-21-2008, 09:03 PM	#4
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	Remove the cap off the brake reservoir.... THe rears you should turn it with a needle nose plier while pushing... Its in the FSM. Read it. You can also get a square tool from any autoparts store and put it on a ratchet... MUCH MUCH Easier. __________________ Turn and Burn!

05-22-2008, 10:43 AM	#5
deuceforty Zilvia Addict Join Date: Apr 2008 Location: raleigh Age: 33 Posts: 907 Trader Rating: (12) Feedback Score: 12 reviews	dont forget to open the cap on the master cylinder and the bleeder screw on the caliper get one of the square brake tools and compress clockwise __________________ TWO TONE COUPE FS NC

05-23-2008, 02:18 AM	#6
Jbma327 Zilvia FREAK! Join Date: Sep 2006 Location: SIX-2-SIX Posts: 1,153 Trader Rating: (51) Rides Gallery: Jbma327 Feedback Score: 51 reviews	sounds like your caliper is almost seized up. Try turning it and pressing it in at the same time. __________________ KEEPIN IT REAL!

05-21-2008, 06:53 PM	#3
spoolandslide Zilvia FREAK! Join Date: Apr 2008 Location: lost in a bump splice in the fabric of our clockwork Posts: 1,044 Trader Rating: (12) Feedback Score: 12 reviews	well it is now back in but wont depress any farther than it was originally when i changed my brakes i was able to spin the piston clockwise and it just kinda screwed itself in but this one is being tricky any other little tricks out there?

05-23-2008, 03:21 AM	#7
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	Bleeder screw? wtf you thinking.... you will introduce air if you open the bleeder screw open to air... __________________ Turn and Burn!

05-23-2008, 03:45 AM	#8
Forge_55b Zilvia Junkie Join Date: Jun 2007 Location: OC Age: 39 Posts: 414 Trader Rating: (2) Feedback Score: 2 reviews	if the piston is not going down even with the brake reservoir open then yeah open up the bleeder. Yes air will probably get in but you might as well bleed the brakes anyhow

05-23-2008, 07:18 PM	#10
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	yah.... but you can push the piston in without that... __________________ Turn and Burn!

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