Brake System Overhaul

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I did a full brake overhaul and you have to bleed them more than once, you think you got all the air out but you dont.

Ive bleed mine 3 times and they stop like a champ now
 
woodsman 44 said:
I did a full brake overhaul and you have to bleed them more than once, you think you got all the air out but you dont.

Ive bleed mine 3 times and they stop like a champ now
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Did you drive it around/use the brakes between bleeds?
 
Still no love, getting pretty frustrated. Ive now driven around the neighborhood and bled them 3x with no appreciable improvement.

When I bleed, I get a fairly apathetic stream of fluid from the bleeder. I thought I read somewhere that the brakes are supposed to be like 3000 psi? I am getting nothing even close to that.

Booster passes the test, so looking for other ideas? Should the stream come out really strong?
 
After several more bleeds and no air coming from the lines I have no noticeable improvement. Sigh.

I am looking at replacing my MC. I can order either ABS or non-ABS for my year. I have removed the ABS system, so are the two MC's going to be interchangeable? Can I install a non-ABS MC in my truck even though it was originally setup as an ABS truck? Any reason to go one way or the other?
 
I pulled out two working MC from working rigs and had them on the shelf for under a year. Put them on bench to bleed them to use them on my 40 and both failed. I have no idea what happened, but they will not work.

So, I would replace the master with an early master (non abs) from Rock auto, $60ish and be done.
 
I'm having brake issues lately too. How did you figure out how to delete the ABS?
 
It is not uncommon for an elderly master to fail after a brake rebuild, the trick is to put a block of wood under the brake pedal to limit movement when bleeding, but TBH if the block trick works then you should replace the master.

Regards

Dave
 
EWiz said:
I'm having brake issues lately too. How did you figure out how to delete the ABS?
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Do a search on here for abs delete. One of the guys did a fantastic thread with pictures and step by step. Super easy.
 
That's the one.
 
To wrap this thread up: I replaced my MC and re-bled. Brakes are much, MUCH better now. The best they've been post-work, and better than they were pre-work. I think I have one more bleed to do still (I've done 2 so far.)

The exercise turned into quite a bit of effort, and were I to do it again I would do the following things differently:
  • I would spend more time/effort trying to bleed through the ABS and LSPV first. I've read a couple of posts from folks that I trust that after flushing good/clean fluid through their ABS and LSPV they had very good brakes.
  • I would buy reman'd calipers from Napa - I believe those are reman'd Toyota's. I learned a lot re-doing my calipers, but just not worth it to do it myself vs the relatively inexpensive cost to buy them already done
  • Just buy the extended line kits. Its not that much money, and the extra inches of hose length probably wont hurt anything
  • Explain a little more thoroughly to my 'helper' how the process of bleeding brakes works, to ensure the MC doesn't get damaged
When all is said and done, I am glad I did it. The brakes are much better in normal driving conditions, and the panic stops I have simulated are immeasurably better. In the past no matter how hard I stomped on my brakes, I came to kind of a gentle rolling stop. Now if I get after the brake pedal hard the truck comes to a quick and precise halt, hard enough to lock up my seatbelts (something I couldn't really do before.)
 
Just a note on the Sequoia calipers- I know for a fact that our 16" alloy wheels will not clear them. Tried a swap between my 80 and my 02 Sequoia- no joy. :censor:

Well, you never really know until you try...:meh:
 
artech said:
Just a note on the Sequoia calipers- I know for a fact that our 16" alloy wheels will not clear them. Tried a swap between my 80 and my 02 Sequoia- no joy. :censor:

Well, you never really know until you try...:meh:
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Tks for trying, and reporting out. I didnt get a chance to try it as I needed to get my truck back on the road.

No reason to hang onto those calipers then I guess!
 
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