Booster pushrod to Master Cylinder Clearance QUICK CHECK

Рет қаралды 81,818

5 жыл бұрын

Brake pedal have too much travel and not sure if clearance between booster pushrod and master cylinder is correct then use this method to get you close.
Leave the brake lines attached to the master and simply slide it out far enough to access the pin. Turn it out until the master will not seat against booster. Now screw the rod back in one turn at a time until the master will seat. This will get you in the ball park. If pedal feel improves you need to adjust correctly. Clearance between pushrod and master should be 0.020".
Will shoot a detailed video on this process soon.

Пікірлер: 50

@balajinarasimhan5346 2 жыл бұрын

the best brake booster adjustment video on the internet !.No nonsense, no drama no music. Straight to the point ! I love it!

@vintagespeedandperformance6615 2 жыл бұрын

Thank you

@tonyg2859 2 жыл бұрын

Boy, isn't simple the best way. You explained so much in no time. Nice job and thank you.

@vintagespeedandperformance6615 2 жыл бұрын

You're welcome!

@refugiorod 4 жыл бұрын

You the man! Quick and no drama music.

@arguingwithstupidpeople2047 4 жыл бұрын

Quick and to the point - I like it.

@trackdummiesent.shawnglock7367 3 күн бұрын

Thank you for being straight to the point

@jns66jns 3 жыл бұрын

I just installed a new master cylinder and could not figure out my problems, I looked up this and you explained it perfectly in just seconds!

@vintagespeedandperformance6615 3 жыл бұрын

@josh Saunders happy to hear the video helped. Thanks for watching!

@nikmacintosh1190 Жыл бұрын

Best video yet, no BS, just straight to work. Thank you

@vintagespeedandperformance6615 Жыл бұрын

Thanks for watching

@richardpatnode1136 2 жыл бұрын

Your idea is a great and easy fix. I have a spare MC so it was simple. Been screwing around with a sloppy pedal for a few years.

@vintagespeedandperformance6615 2 жыл бұрын

glad you found the video!

@da7teg343 3 жыл бұрын

Wow. Thank a lot brother. I fixed mine👍

@vintagespeedandperformance6615 2 жыл бұрын

Glad it helped

@TheIndustrialRetrospective Жыл бұрын

Awesomely obvious! Dont need the special tool any more!

@gthree0239 Ай бұрын

Now, I just need to know is this the issue I’m having or is it a proportioning valve issue? Thanks for a quick video.

@vintagespeedandperformance6615 Ай бұрын

Thanks for watching. Check out this article from Speedway on proportioning valves. Good Luck! www.speedwaymotors.com/the-toolbox/brake-proportioning-valve-reset-symptoms-bleeders-adjustment/134183#:~:text=Press%20the%20brake%20pedal%20three,that%20IS%20getting%20brake%20fluid.

@tonykilbourn7812 Жыл бұрын

A video worth wAtching!

@vintagespeedandperformance6615 Жыл бұрын

Thank you!

@rollyg4381 2 жыл бұрын

I have nissan altima, just changed the calipers into aftermarket ones, properly bleed all four but still spongy breaks, my local mechanic says it needs a new booster but I am 100% positive that the rod needs to be pulled slightly forward. The ball point tip of rod is to large to fit a regular socket, and regular wrench will not fit because of the clearance as the rod is an inch inside the tip of booster even when breaks are applied all the way to extend the rod . I want to adjust rod without taking the booster out first if possible. If I pull it out with a plier enough so I have a good clearance will that damage the booster's diaphragm?

@vintagespeedandperformance6615 2 жыл бұрын

Hi Rolly, I hope you figured out your booster situation. I am not very familiar with modern imports but the rod shouldn't be connected directly to the diaphragm. You may be able to find an exploded view diagram of your booster with a google search.

@jmtech6103 9 ай бұрын

Awesome thanks from India, Chennai ❤

@vintagespeedandperformance6615 9 ай бұрын

Thanks for watching!

@80ajflores 5 ай бұрын

Nice video. I have a 2004 Toyota Tundra SR5. I had to replace my brake booster because it had a leak inside the cab area. I purchased an aftermarket booster from Autozone but believe it might have been defective. Ever had air coming out between cylinder and booster? I got a code for running lean and it's all I could find that might be causing the problem. Do you think it's better to get an OEM part? What are your thoughts?

@vintagespeedandperformance6615 5 ай бұрын

Thanks for watching. Definitely sounds like the booster is defective. Aftermarket parts for the most part are junk now. There seems to be no quality control. I know it’s going to probably triple the cost but personally, i would go with an OEM booster. Back in the day, NAPA carried quality parts but in order to compete with autozone and others they started selling lower quality parts. They still have a premium line of parts so you might want to check with them to see what they have for your tundra and compare to OEM cost. Good luck and let us know how it goes

@belowfray5251 Жыл бұрын

Thanks

@vintagespeedandperformance6615 Жыл бұрын

Thanks for watching!

@Jay-fq8uz Жыл бұрын

What’s that little tool called? Also should I have the break engaged when adjusting?

@vintagespeedandperformance6615 Жыл бұрын

That is just a little 1/4” drive T-Handle breaker bar with a socket. A wrench or ratchet and socket will work just fine. Do not apply the brakes when making this adjustment. You are setting the air gap between the push rod and master cylinder piston. There has to be a gap or the brakes will not fully release when you take foot off the pedal. Thanks for watching!

@austinburnette9295 2 жыл бұрын

Would this help with a break pedal that don’t return all the way back up I have to pull it back up a little with my foot so they don’t drag and the light go off?

@vintagespeedandperformance6615 2 жыл бұрын

Adjusting the push rod probably wont help with no return. Issues I have had with pedal not returning can be related to system needing to be bled, improperly adjusted shoes (all drum brakes), bad master. Hope you already figured out your issue

@tonykilbourn7812 Жыл бұрын

Awesome response I’m in same predicament Rebuilding all cylinders first Them I’ll be sure and check rod adjustment for sure!

@vintagespeedandperformance6615 Жыл бұрын

Good luck with your project. Keep us updated on how you make out.

@abdoulkaninenama2647 Жыл бұрын

Super

@vintagespeedandperformance6615 Жыл бұрын

Thanks for watching!

@ermac9647 Ай бұрын

What if the push rod is too deep inside the booster to get the pliers attached to keep from spinning?

@vintagespeedandperformance6615 Ай бұрын

This video was to demonstrate an on car adjustment. If you cannot reach the rod, have a buddy depress the brake pedal to extend it outside the booster housing. Make the adjustment, release the pedal and fit the master. Same thing if you’re setting it up on the bench, push in the booster rod from back side to access the adjustment. Adjust the rod out just far enough where the master will not seat then back it off a half turn at a time. When the master fully seats on the booster housing. Give the rod another 1/2 turn in. You want about .030” clearance between the pushing rod and this master curling piston. The clearance is for thermal expansion of the master cylinder piston. If the piston expands and makes contact with the pushrod when brake pedal is released, the brakes will drag. Hope that helps. Thanks for watching and good luck

@ermac9647 Ай бұрын

thanks for responding yea I will try this method and give it another go

@joeoliver9223 Жыл бұрын

Great, I now feel sorry for myself spending or wasting so much time watching the other videos on how to do this . Most of them were over 9 minutes plus and of course I had to suffer through the elevator music................thanks fo much 58 seconds and done!

@vintagespeedandperformance6615 Жыл бұрын

I feel you…not a fan of music over time lapse video. Thanks for watching!

@octane2099 3 жыл бұрын

So you want it just to bearly touch ?

@vintagespeedandperformance6615 3 жыл бұрын

@octane 209 Thanks for watching. There should be about a .025” gap between the pushrod and master cylinder piston. The master cylinder piston will expand when the brake fluid warms up. If you don’t leave a gap the the brakes will drag. If you leave too much gap the pedal will have excessive travel before the brakes start to engage and may not apply full line pressure when pedal is all the way depressed. I made a video on how to get a precise measurement but the audio was crap so I trashed it.

@jamieelam8657 2 жыл бұрын

What size socket are you using 6mm

@tyrc12pro94 2 жыл бұрын

@@vintagespeedandperformance6615 make another video please.. with some calipers and a straight edge? Or how did you measure it?

@vintagespeedandperformance6615 2 жыл бұрын

@@tyrc12pro94 When setting up a brake system from scratch I do use a straightedge and a dial caliper to get a real measurement. This video was meant the the guy that just needs to get it close enough to drive. Most of my tools, my car and all my spare parts are 2000 miles away so I'm not really set up for making any video. I hope to start making new content by year end.