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  #21  
Old 05-28-2010, 02:03 PM
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So got everything back together but brakes are still pretty spongy. I may try and pick up another quart of fluid and try the motiv again. I must have already put 1.5 quarts thruogh the system and got no air bubbles at the end. *sigh*
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  #22  
Old 05-28-2010, 02:20 PM
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So got everything back together but brakes are still pretty spongy. I may try and pick up another quart of fluid and try the motiv again. I must have already put 1.5 quarts thruogh the system and got no air bubbles at the end. *sigh*
80s seem notoriously hard to bleed for some reason...At least you see a lot of threads on MUD in regards to difficulty bleeding the brakes. On the 's 80 it took me 4 rounds to get it good (and all I did was change the rotors and pads) - First attempt was using "suction" on the bleeder based on a thread I read. That didn't work at all...Second attempt was with the Motive power bleeder and that didn't work so well either (didn't know how to use it ). Third and Fourth attemps were the old school two person system. First round of that go the brakes ok and the second round made them .

Given the amount of work you did I would have guessed it will take you 3+ rounds of bleeding to get them right...Just keep at it...

If you try the Motive again, I'd suggest 2 Qts of fluid...Dry test the Motive per the instructions to insure you have a good seal. Then fill with the 1.5 Qts of brake fluid and run an equal amount through all 4 corners plus the LSPV keeping an eye on the reservoir. Run all the fluid out of the Motive + about 1/2 of the reservoir. Then use the last bit of new fluid left in the bottle to top off the resevoir.

Don't rely on seeing the bubbles stop...Just run a lot of fluid through each corner and the LSPV and hopefully all will be well.
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  #23  
Old 05-28-2010, 08:39 PM
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No luck. Did a few rounds with the motive, a few more 2 person rounds, both with the cruiser running and not. Used up 2 more quarts. Cracked the lines into the MC and abs with the motive on there, got fluid out but no air. Pedal still has very little resistance and wont build up pressure after multiple pumps. I'm beginning to question the MC, even though it was "seemingly" good before starting this. Used a block under the brake pedal, but maybe it was rusty enough in the bore...or there's just tons of hidden air in teh MC.

Looks like another mazda-to-the-desert weekend :\
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  #24  
Old 05-29-2010, 12:52 AM
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Use the motive with the brake pedel locked all the way down. And if the try k has abs there might also be a blessed on there as well. (don't have 80's memorized) if not I belive you can bleed the abs by actuating the abs electronically to get the pump actuating. Just diffrent methods of bleeding hard to bleed systems
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  #25  
Old 06-28-2010, 10:48 AM
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In my fruitless attempts to get this system to bleed after 8 quarts of fluid, I found some generic brake documentation related to toyota/lexus that I figured I'd post up. Might have already been circulated, but I found some of the docs interesting. Explains a bit more about the lspbv, etc. I was hoping I'd find some secret way to activate a "bleed mode" on the abs controller without some fancy tool. *sigh*

http://www.autoshop101.com/autoshop15.html (Scroll all the way down)

Toyota Series - Brakes
Brake01 Fundamental Principles.pdf 194KB
Brake02 Master Cylinder.pdf 420KB
Brake03 Drum Brakes.pdf 337KB
Brake04 Disc Brakes.pdf 268KB
Brake05 Brake Booster.pdf 608KB
Brake06 Parking Brake.pdf 224KB
Brake07 Brake Diagnosis.pdf 319KB
Brake08 Hydraulic Control.pdf 553KB
Brake09 Anti-Lock Brakes.pdf 834KB
Brake10 ABS Diagnosis.pdf 327KB
Brake11 Other ABS Actuators.pdf 1041KB
Brake12 Traction Control System (TRAC).pdf 1357KB
Brake13 Appendix.pdf 193KB
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  #26  
Old 06-28-2010, 11:38 AM
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Man I feel for ya. I been messin with my brakes also and cant get them to be any more firm. I did manage to get this Japanese Brake System to do for now. haha Good luck.
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  #27  
Old 06-28-2010, 11:39 AM
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oh and no leaks yet....
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  #28  
Old 06-28-2010, 07:19 PM
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Man I feel for ya. I been messin with my brakes also and cant get them to be any more firm. I did manage to get this Japanese Brake System to do for now. haha Good luck.
Hey Kenny! That was German (Kaiser) engineering not Japanese! Do you know the name of the company that built those Jeeps in the 60's and 70's?

Dave K.
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  #29  
Old 06-28-2010, 08:24 PM
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Hey Kenny! That was German (Kaiser) engineering not Japanese! Do you know the name of the company that built those Jeeps in the 60's and 70's?

Dave K.
Dave,

Seeing that this is a MIX of all things i just suspect it is Japanese engineering to make the lock grips lock. And to make it worse those grips were prob made in china so guess that makes it a acient chinese secret now.....


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  #30  
Old 06-28-2010, 08:57 PM
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Dave,

Seeing that this is a MIX of all things i just suspect it is Japanese engineering to make the lock grips lock. And to make it worse those grips were prob made in china so guess that makes it a acient chinese secret now.....


Ahh...yes grasshopper!
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