How do you adjust the brake pedal??

Tech tips and how to's

Moderators: garth, notoptoy, S Allen

User avatar
Linda
Roadster Enthusiast
Posts: 7499
Joined: Sat Nov 05, 2005 11:37 pm
Location: Los Angeles
Model: 1500/1600
Year: High Windshield-68-70

Re: How do you adjust the brake pedal??

Post by Linda »

Like this from C Costine?
viewtopic.php?p=290457#p290457
68 1600 Los Angeles, CA
New owners must read: the ultimate road trip, by Scott- roadsterroadtrip.com-http://www.roadsterroadtrip.com/index.php/readfromstart

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

There are shims installed already. Im just wondering if I should add a slightly thicker one or is a .013 difference between the two sides inconsequential?
Ive seen normal. It aint pretty.

User avatar
fj20spl311
Roadsteraholic
Posts: 4974
Joined: Mon Nov 28, 2005 3:54 pm
Location: San Diego, Ca

Re: How do you adjust the brake pedal??

Post by fj20spl311 »

That is inconsequential, but you could add or subtract shims as needed to make them exactly the same but I would bet that the next time you drove the car the pad difference would change. Mostly the pads are pushed back into the caliper by the run-out of the rotor. The run-out is dependent on the rotor, the bearing, and the load from turning. I don't think they would be the same any two times in a row.
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

That's what I was thinking but as a novice thought I would get a second (smarter) opinion. While I was in there today, completely dis assembled the caliper assembly, checked pads (again) for clearance and sanded the edges a bit more for good measure. Also sanded off the glaze on the contact surface from overheating. Removed all surface rust, dirt and grime from every surface. Wanted to make sure that nothing was preventing free movement of the pads.
Ive seen normal. It aint pretty.

User avatar
Linda
Roadster Enthusiast
Posts: 7499
Joined: Sat Nov 05, 2005 11:37 pm
Location: Los Angeles
Model: 1500/1600
Year: High Windshield-68-70

Re: How do you adjust the brake pedal??

Post by Linda »

Congrats for hanging in there. Sometimes I find it useful to take a break and do some cosmetic project, polish, paint etc and then come back around to the job that has me frustrated.

Linda
68 1600 Los Angeles, CA
New owners must read: the ultimate road trip, by Scott- roadsterroadtrip.com-http://www.roadsterroadtrip.com/index.php/readfromstart

User avatar
fj20spl311
Roadsteraholic
Posts: 4974
Joined: Mon Nov 28, 2005 3:54 pm
Location: San Diego, Ca

Re: How do you adjust the brake pedal??

Post by fj20spl311 »

Hang in there!
An idea to confirm that the piston is retracting enough would be to cut a dowel the length from the washer to the end of the seal.
Install a drill in the port from the reservoir to the piston cylinder. Confirm that the dowel, washer and clip fit with some clearance. I think an 1/8" would be amount the correct amount, but I have not measure this before.
MC 2.jpg
You do not have the required permissions to view the files attached to this post.
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

I have a new master on order. I have determined that the old master had metric threads and the P.O. changed out the brake line fittings on the master cylinder end to metric. I will need to change them back to SAE fittings for the new master but don't want to replace the entire brake lines. I would rather just replace the fittings on the existing lines. I have a pipe flaring tool so that I can accomplish this. My problem is that I cannot source the SAE fittings down here in my tiny little Mexican town. I see that a few of the vendors sell new brake lines but have not seen any vendors that just offer the fittings. Anybody know where I can source them? Fits 3/16 line. 3/8 X24 fitting.3/4 inch in length.
Ive seen normal. It aint pretty.

User avatar
Linda
Roadster Enthusiast
Posts: 7499
Joined: Sat Nov 05, 2005 11:37 pm
Location: Los Angeles
Model: 1500/1600
Year: High Windshield-68-70

Re: How do you adjust the brake pedal??

Post by Linda »

Here is a nice video someone posted on the Tech Wiki about the Datsun 510 master, including the adapter and push rod info.
picture is worth a 1000 words. Never knew this existed.
http://www.311s.org/pmwiki-311/pmwiki.p ... rakeMaster
And the original Karl Payne info on the 510:
http://www.311s.org/pmwiki-311/pmwiki.p ... lMasterAlt

Linda
68 1600 Los Angeles, CA
New owners must read: the ultimate road trip, by Scott- roadsterroadtrip.com-http://www.roadsterroadtrip.com/index.php/readfromstart

User avatar
fj20spl311
Roadsteraholic
Posts: 4974
Joined: Mon Nov 28, 2005 3:54 pm
Location: San Diego, Ca

Re: How do you adjust the brake pedal??

Post by fj20spl311 »

You should be able to buy a premade universal steel line with 3/8 SAE fittings for less the $10. Just cut the line and remove the fittings.
If there is a wreaking yard in your town, most "American" cars before 1980 would have SAE brake line fittings. Check with your local brake shops also.
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

Thanks for the info Linda but i'm going away from a metric master cylinder to a SAE master. Thus the need to source the correct SAE fittings for the brake lines.FJ20, Keep in mind, I am 800 miles south of the border in a little fishing village of about 18000 people. I have hit all the little parts houses but the inventories leave a lot to be desired. Although several had generic steel lines in stock, they all turned out to be metric part numbers.
Ive seen normal. It aint pretty.

User avatar
fj20spl311
Roadsteraholic
Posts: 4974
Joined: Mon Nov 28, 2005 3:54 pm
Location: San Diego, Ca

Re: How do you adjust the brake pedal??

Post by fj20spl311 »

Are you 100% sure that the PO changed the fittings as its possible to swap the metal fitting in the master cylinder with the SAE version from the original master cylinder.

here is a common supplier for the 3/8-24 inverted flare nut
blf-12c-5.png
You do not have the required permissions to view the files attached to this post.
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

FJ20, I'm fairly certain as the hex nut is a 10 mm as opposed to a 7/16,
Ive seen normal. It aint pretty.

User avatar
dads311
Roadster Fanatic-Site Supporter
Posts: 92
Joined: Sun Dec 04, 2016 9:24 pm
Location: Emmett, Id.
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by dads311 »

Pretty sure I have some fittings out in the shop I can send you. let me know where and how.
Mike
Mike
rebuilt dads 67.5 1600
1952 GMC 302ci 6cyl w/cam and 3 deuces
1965 Mustang (Wife's)
1971 Nova (Son Claimed)

bajaroadster
Roadster Fanatic
Posts: 91
Joined: Fri Jun 28, 2019 1:29 pm
Location: Loreto B.C.S. Mexico
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: How do you adjust the brake pedal??

Post by bajaroadster »

before.jpg
after.jpg
]Thanks Mike. It may not come to that. I think ive finally convinced the vendor that im buying the master cylinder from to send the proper fittings when he ships me the master. For some reason, he was initially reluctant to do so. All I can figure is that he didn't have them in inventory and didn't want the additional hassle to aquire them. In the meantime......
You do not have the required permissions to view the files attached to this post.
Ive seen normal. It aint pretty.

User avatar
notoptoy
Vendor-Site Supporter
Posts: 9261
Joined: Fri Oct 02, 2009 2:55 pm
Location: Winston-Salem, NC and Ocala, FL

Re: How do you adjust the brake pedal??

Post by notoptoy »

Now is a great time to add the brake firewall brace if you don't have it already!
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.

67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG