Brake pad changing tip: effortless piston retreat with techstream - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

86ft.lb · 05-05-2013, 10:15 PM

1. Goal
Retreat piston so that new pad can fit in the caliper.

2. Requirements
Techstream (toyota scan program), cable, and laptop

3. Procedure
Connect to vehicle. Select ABS module. Select active test menu. There are total 12 solenoids. 4 of them are pressure release solenoid. Select one of them and start a test. The test will activate the solenoid for 2 secs and pressure will be released, making piston retreat.

SRLR = Solenoid Rear Left Release
SRRR = Solenoid Rear Right Release
SFLR = Solenoid Front Left Release
SFRR = Solenoid Front Right Release

4. Pros and cons
Pros: No C-clamp or brute force required. No need to bleed air even though pressure is released.

Cons: laptop, cable, and program required.

Happy braking!

Sportsguy83 · 06-07-2013, 12:20 PM

Anyone can confirm this works?

Dave-ROR · 06-07-2013, 02:10 PM

I'd rather just use a c clamp, not that I can these days anyways (up front anyways). A c clamp is going to be quicker IMO than dealing with a laptap.

SkullWorks · 06-07-2013, 02:23 PM

I can confirm that those are options in the Techstream active tests and that they last ~2seconds,

I cannot confirm that they retract (because i haven't tried)

I can confirm also that the logic behind the acronym makes more sense than what i was guessing at when I was playing with it last night...

OrbitalEllipses · 06-07-2013, 02:59 PM

Yes, but when you're doing a pad change you want to crack the bleeder and push that old fluid out and replace it with fresh fluid, instead of pushing it back into the lines/reservoir and using it again.

I just use the old pad, placed on the piston, and pull it into the caliper from the other side, one hand on each "dog ear" of the pad.

GTM_Challenge · 06-07-2013, 04:23 PM

Quote:

Originally Posted by OrbitalEllipses

Yes, but when you're doing a pad change you want to crack the bleeder and push that old fluid out and replace it with fresh fluid, instead of pushing it back into the lines/reservoir and using it again.

I just use the old pad, placed on the piston, and pull it into the caliper from the other side, one hand on each "dog ear" of the pad.

I've never done it this way. I admit I don't always bleed my brakes when I put in new pads. It would work just fine, but I don't always have a helping hand around to help with the brake bleed.

celica73 · 06-07-2013, 08:03 PM

Quote:

Originally Posted by OrbitalEllipses

Yes, but when you're doing a pad change you want to crack the bleeder and push that old fluid out and replace it with fresh fluid, instead of pushing it back into the lines/reservoir and using it again.

I just use the old pad, placed on the piston, and pull it into the caliper from the other side, one hand on each "dog ear" of the pad.

What he said. The worst fluid in the system is the burned stuff in the caliper, why would you want to force that back into the lines?

alex_86 · 06-07-2013, 08:12 PM

im sorry but i must be informed on why you need to bleed your brakes when you change pads? really doesnt make since to me since the system has not been opened in any way?

OrbitalEllipses · 06-07-2013, 08:31 PM

Quote:

Originally Posted by celica73

What he said. The worst fluid in the system is the burned stuff in the caliper, why would you want to force that back into the lines?

The post above yours dude....

Quote:

Originally Posted by celica73

What he said. The worst fluid in the system is the burned stuff in the caliper, why would you want to force that back into the lines?

05-05-2013, 10:15 PM	#1
86ft.lb Member Join Date: Jul 2012 Drives: orange fr-s MT Location: WA Posts: 23 Thanks: 18 Thanked 16 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	Brake pad changing tip: effortless piston retreat with techstream 1. Goal Retreat piston so that new pad can fit in the caliper. 2. Requirements Techstream (toyota scan program), cable, and laptop 3. Procedure Connect to vehicle. Select ABS module. Select active test menu. There are total 12 solenoids. 4 of them are pressure release solenoid. Select one of them and start a test. The test will activate the solenoid for 2 secs and pressure will be released, making piston retreat. SRLR = Solenoid Rear Left Release SRRR = Solenoid Rear Right Release SFLR = Solenoid Front Left Release SFRR = Solenoid Front Right Release 4. Pros and cons Pros: No C-clamp or brute force required. No need to bleed air even though pressure is released. Cons: laptop, cable, and program required. Happy braking!

06-07-2013, 02:10 PM	#3
Dave-ROR Site Moderator Join Date: Dec 2010 Drives: Stuff Location: Florida Posts: 10,317 Thanks: 955 Thanked 5,965 Times in 2,689 Posts Mentioned: 262 Post(s) Tagged: 8 Thread(s)	I'd rather just use a c clamp, not that I can these days anyways (up front anyways). A c clamp is going to be quicker IMO than dealing with a laptap. __________________ -Dave Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback DD: 2005 Acura TSX Tow: 2022 F-450 Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4 Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX Projects: 2013 Subaru BRZ Limited track car build FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles

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06-07-2013, 02:23 PM	#4
SkullWorks Banned Join Date: Mar 2012 Drives: SSM LT MT BRZ Location: SoCal Posts: 1,033 Thanks: 803 Thanked 754 Times in 328 Posts Mentioned: 23 Post(s) Tagged: 1 Thread(s)	I can confirm that those are options in the Techstream active tests and that they last ~2seconds, I cannot confirm that they retract (because i haven't tried) I can confirm also that the logic behind the acronym makes more sense than what i was guessing at when I was playing with it last night...

06-07-2013, 02:59 PM	#5
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,890 Times in 2,903 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	Yes, but when you're doing a pad change you want to crack the bleeder and push that old fluid out and replace it with fresh fluid, instead of pushing it back into the lines/reservoir and using it again. I just use the old pad, placed on the piston, and pull it into the caliper from the other side, one hand on each "dog ear" of the pad.

06-07-2013, 08:12 PM	#8
alex_86 Member Join Date: Mar 2013 Drives: 2013 scion firestorm frs Location: Dallas,Texas Posts: 77 Thanks: 10 Thanked 13 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	im sorry but i must be informed on why you need to bleed your brakes when you change pads? really doesnt make since to me since the system has not been opened in any way?

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