How to unlock brakes - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lolatclint · 08-21-2008, 05:56 PM

Alright I replaced some new lug studs and my friend accidently pressed the brakes and now their completely closed.

my cousin said to get a c clamp tool 5-6 inches. but i have no clue what to do.

thanks

Devens240 · 08-21-2008, 06:02 PM

Hahahahahhaa. sorry thats just funny. try taking off the brakeline so all the fluid drains out and releases the pressure maybe? or if you can pry them apart with a screwdriver without damaging the pads?

lolatclint · 08-21-2008, 06:03 PM

i unscrewed the nipple and drained some of the fluid out but it didnt release any pressure. i also tried to pry it apart with a flathead and hammer and still nothing.

Sileighty_85 · 08-21-2008, 06:10 PM

Front or Rear?

Are the brake pads still in the caliper?

Front just put the C-Clamp screw side inside the piston cup, and wrench down on it to compress the piston. If it doesnt compress then your calipers are Seized

Rear: you need a special "cube" to twist the piston back in, Or you can use some neede nose pliers

Edit: At work cant see pics

thefro526 · 08-21-2008, 06:16 PM

try getting a pair of vice grips and slowly twisting the piston as you push in on it. I had the same problem with some of my calipers and twisting it made a huge help.

lolatclint · 08-21-2008, 06:19 PM

its the rear brakes, and the brake pads are in the caliper still

*garagelu* · 08-21-2008, 06:21 PM

you guys are suggesting him to twist the piston in but how is he supposed to get to the piston when the brake pads in the way. Here is what you do. Bolt the whole assembly back to the spindle. Then unbolt the caliper from the caliper bracket. And then use a hammer to hit the caliper off the bracket. That should allow you to twist the piston back in.

Sileighty_85 · 08-21-2008, 06:22 PM

Quote:

Originally Posted by lolatclint

its the rear brakes, and the brake pads are in the caliper still

Ok well the C-Clamp wont work then

You have to twist the piston to compress it

**mrmephistopheles** · 08-21-2008, 10:06 PM

Ok, I'll admit to laughing out loud when I saw this.
Slap your friend in the back of the head, then pry the brake pads out somehow. Start with the outer pad first, as the inner one will likely be held in place by the pin on the back of the pad.

Once that's done, get the tool everyone is mentioning and screw that piston back in.

HS13KLS · 08-21-2008, 10:19 PM

^ i agree, just pry them apart..and DO NOT. use a c clamp on those rear calipers..

you will seize them.. or break them.. whatever. point is. you will need new ones. so dont do that. ha.

i hope you get them out man

WoolyS14DET · 08-21-2008, 10:28 PM

remove pads and turn piston clockwise to retract back into place !!
btw sock you buddy for being a "DONKY"

Mikey88 · 08-21-2008, 10:50 PM

dont use a c-clamp either to press in the piston after you remove the pads you can damage the piston causing you to have to buy a new caliper...i know i learned the hard way because i was cheap...buy the piston tool from autozone and have fun

kamerononfire · 08-21-2008, 11:10 PM

i don't know if anyone has said something actually helpful, but here is something that WILL work

get a pair of channel lock pliers, and grip them around the outer diameter of the piston. grip tightly and turn the piston counter clockwise. at the same time, pry with a flathead screwdriver to push the piston back in (or, use a c-clamp). do both at the same time until you have enough play to remove a pad.

good luck, douchebag.

projectRDM · 08-21-2008, 11:16 PM

A whole thread of fail.

Remove the pad carrier, thus removing the pads from the caliper.

Now compress the caliper.

Sniff some glue while you're at it, you apparently need it.

LA_phantom_240 · 08-21-2008, 11:20 PM

Rip em off and go Z32.

Or you could do what everyone else suggested.

**mrmephistopheles** · 08-21-2008, 11:21 PM

Quote:

Originally Posted by projectRDM

A whole thread of fail.

Remove the pad carrier, thus removing the pads from the caliper.

Now compress the caliper.

Sniff some glue while you're at it, you apparently need it.

hahaha christ I feel dumb.

That's what I get for thinking within the confines of the OP's post.

JDM671 · 08-21-2008, 11:41 PM

Quote:

Originally Posted by lolatclint

Alright I replaced some new lug studs and my friend accidently pressed the brakes and now their completely closed.

my cousin said to get a c clamp tool 5-6 inches. but i have no clue what to do.

thanks

holy fuck this happened to me. Or my friend that is. But someone pulled the hand brake. And it got stuck the same way. Good things the pads where warn out though. All I did was hammered the shit otta it. lol

Firestorm · 08-22-2008, 12:33 AM

Quote:

Originally Posted by projectRDM

A whole thread of fail.

Remove the pad carrier, thus removing the pads from the caliper.

Now compress the caliper.

Sniff some glue while you're at it, you apparently need it.

what he said.

lolatclint · 08-22-2008, 12:49 AM

thanks for everyones help. i got it back on but my brakes are a little weak. probably gotta do some bleeding.

Def · 08-22-2008, 06:04 PM

If you messed with the bleeder screw on the caliper of course you have to bleed the brakes.

08-21-2008, 05:56 PM	#1
lolatclint BANNED Join Date: Sep 2007 Location: SOCAL Posts: 674 Trader Rating: (1) Feedback Score: 1 reviews	How to unlock brakes Alright I replaced some new lug studs and my friend accidently pressed the brakes and now their completely closed. my cousin said to get a c clamp tool 5-6 inches. but i have no clue what to do. thanks

08-21-2008, 06:10 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Front or Rear? Are the brake pads still in the caliper? Front just put the C-Clamp screw side inside the piston cup, and wrench down on it to compress the piston. If it doesnt compress then your calipers are Seized Rear: you need a special "cube" to twist the piston back in, Or you can use some neede nose pliers Edit: At work cant see pics __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

08-21-2008, 11:16 PM	#14
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 47 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	A whole thread of fail. Remove the pad carrier, thus removing the pads from the caliper. Now compress the caliper. Sniff some glue while you're at it, you apparently need it. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

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08-21-2008, 06:02 PM	#2
Devens240 Zilvia Junkie Join Date: Dec 2007 Location: Washington Age: 32 Posts: 413 Trader Rating: (1) Feedback Score: 1 reviews	Hahahahahhaa. sorry thats just funny. try taking off the brakeline so all the fluid drains out and releases the pressure maybe? or if you can pry them apart with a screwdriver without damaging the pads?

08-21-2008, 06:03 PM	#3
lolatclint BANNED Join Date: Sep 2007 Location: SOCAL Posts: 674 Trader Rating: (1) Feedback Score: 1 reviews	i unscrewed the nipple and drained some of the fluid out but it didnt release any pressure. i also tried to pry it apart with a flathead and hammer and still nothing.

08-21-2008, 06:16 PM	#5
thefro526 Nissanaholic! Join Date: Feb 2008 Location: New Jersey Posts: 1,813 Trader Rating: (8) Feedback Score: 8 reviews	try getting a pair of vice grips and slowly twisting the piston as you push in on it. I had the same problem with some of my calipers and twisting it made a huge help.

08-21-2008, 06:19 PM	#6
lolatclint BANNED Join Date: Sep 2007 Location: SOCAL Posts: 674 Trader Rating: (1) Feedback Score: 1 reviews	its the rear brakes, and the brake pads are in the caliper still

08-21-2008, 06:21 PM	#7
garagelu Premium Member Join Date: Aug 2005 Location: Atlanta, GA Age: 36 Posts: 1,856 Trader Rating: (60) Feedback Score: 60 reviews	you guys are suggesting him to twist the piston in but how is he supposed to get to the piston when the brake pads in the way. Here is what you do. Bolt the whole assembly back to the spindle. Then unbolt the caliper from the caliper bracket. And then use a hammer to hit the caliper off the bracket. That should allow you to twist the piston back in.

08-21-2008, 10:19 PM	#10
HS13KLS Zilvia FREAK! Join Date: Aug 2006 Location: Illinois/California Age: 32 Posts: 1,114 Trader Rating: (13) Feedback Score: 13 reviews	^ i agree, just pry them apart..and DO NOT. use a c clamp on those rear calipers.. you will seize them.. or break them.. whatever. point is. you will need new ones. so dont do that. ha. i hope you get them out man

08-21-2008, 10:28 PM	#11
WoolyS14DET Zilvia FREAK! Join Date: Mar 2008 Location: Long Island, NY Age: 42 Posts: 1,310 Trader Rating: (18) Feedback Score: 18 reviews	remove pads and turn piston clockwise to retract back into place !! btw sock you buddy for being a "DONKY"

08-21-2008, 10:50 PM	#12
Mikey88 Zilvia Member Join Date: Jul 2008 Location: Somewhere in California Age: 33 Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	dont use a c-clamp either to press in the piston after you remove the pads you can damage the piston causing you to have to buy a new caliper...i know i learned the hard way because i was cheap...buy the piston tool from autozone and have fun

08-21-2008, 11:10 PM	#13
kamerononfire Join Date: Sep 2006 Location: Burnaby, BC Age: 34 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	i don't know if anyone has said something actually helpful, but here is something that WILL work get a pair of channel lock pliers, and grip them around the outer diameter of the piston. grip tightly and turn the piston counter clockwise. at the same time, pry with a flathead screwdriver to push the piston back in (or, use a c-clamp). do both at the same time until you have enough play to remove a pad. good luck, douchebag.

08-22-2008, 12:49 AM	#19
lolatclint BANNED Join Date: Sep 2007 Location: SOCAL Posts: 674 Trader Rating: (1) Feedback Score: 1 reviews	thanks for everyones help. i got it back on but my brakes are a little weak. probably gotta do some bleeding.

08-22-2008, 06:04 PM	#20
Def Post Whore! Join Date: Apr 2004 Location: Houston, TX Posts: 2,701 Trader Rating: (16) Feedback Score: 16 reviews	If you messed with the bleeder screw on the caliper of course you have to bleed the brakes.