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Mazda Engine General \  Brake issue

Brake issue

Mazda Engine General Mazda Engine Mazda Tech
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mercilessltd   +1y
For some reason I just saw your post about your B2200 above mine. Well, I'll still go ahead and check out each individual brake, but all roads are leading to one conclusion.
sincitylocal   +1y
If you can pump up the pedal, and then it becomes firm, and stays that way until you release it, you have an adjustment issue.

Try driving in reverse, hitting the pedal several times. That will ensure the rear brakes are adjusted properly.
mercilessltd   +1y
Well, if I don't have an older booster for an adjustment check, how do you guys suggested I proceed? Start with shortening is my guess.
mercilessltd   +1y
Er, no, lengthening, so that the rod is pushing further into the booster to start.
mercilessltd   +1y
Blessit, Cusser... You ever get tired of being right?
87forever   +1y
Ok things to check.Your brake pedal adjustment heightThis is measured from the center of pedal ,horizontal to the firewall.Your specs should be 8.23-8.43 for 86-93 trks.Next your e brake handle should be 11-13 clicks fully engaged for 1986,and for 1987-1989 7-12 clicks.Now you could have a problem with your front caliper slide pins NOT sliding to apply proper pressure.I would pull those off and lube with caliper grease.Keep in mind our holding bracket for the pads on the top is made onto that bracket! The lower is a bolt.Make sure it moves freely to apply full pressure.I had a issue lame brakes rears new(all of it) but front slide pins toast and sh@#$y pressure.They were so bad,rusted on so went to napa and got the WHOLE caliper,advance and auto zone sell just calipers more so,but do offer the whole unit like next day or later.This issue will screw the masters job,and still have soft brakes.I did not neglect it,bc trk sat mostly just did not keep my slides greased like I should have!So every 6 months I pull and clean,regrease.BTW 45.00 at napa for calipers plus you need a core.Granted your said parts may not be old but wanted to point out this for others to consider if they hit this dilema.Sorry for such a long write.Trying to help out.On caliper part I forgot that when sold at aa,az they sell caliper minus the holding brkt for the pads.The holding brkt is sold seperate idiots,but you can buy the whole unit caliper/brkt as one piece for more $.
mercilessltd   +1y
Wow. Very thorough.

Nah, I just realized my rears aren't adjusted as I had previously thought, which was Cusser's initial diagnosis.

I haven't adjusted them yet, just jacked up one side to test. Yeah, not adjusted...
87forever   +1y
Just a note on the rear adjustment.On the adjustment rod count the threads showing should be like 6-8 overall (my experience) on the adjuster.BOTH sides have to be the SAME! It may vary based on drums age,and slight variation on shoes.Just rotate the adjustment IN or out to push the shoes closer or further from the drum with some resistance but not dragging with emerg brake OFF.Drum should slide on with mild resistance but not hard to slip over shoes adjusted.Annoying but set,drive and then literally back up in reverse several times HARD this will set the final adjustment and should be a OK.Lock up the tires if need be on reversing with shoes stupid close on adjust,and it should set where it will be as a end result if close enough like a thread (1 or 2) and tight!just my exper,and nice tight feel,and stop correct.Stupid tired and going to crash out.
Cusser   +1y


Ha !!! I'm not always right. Most times I know "enough" to stay out of a topic without commenting. I would say my stronger areas automotivewise are air-conditioning, brakes, logical troubleshooting, and persistence. I'm mostly self-taught, book-taught, and Internet taught on other mechanical stuff, but I'm typicaly not afraid to try stuff. I copy into a Word file the hints Earl, SinCity, and others have posted, even saving some of the photos you guys post.

I like stuff to work; recently got a factory fuel sender unit for mine (fixing my original one lasted maybe 4 years) just because I was "tired" of using the trip odometer. But 2 weeks later I went in again to add a fuel "sock" as mine had fallen off likely decades ago.

I have one daughter who is very brain-blessed, and I constantly have to remind her (now 21) that most people don't fit in her category.

I have experience (from the 1970s) as an air-cooled VW mechanic, B.S. in Chemistry, which is what I work at. I'm basically an inventor in the consumer products industry, as I "invent" new test procedures to assay (and validate such assays as per FDA regulations) for active ingredients in over the counter pharmaceuticals. So I use my mechanical background to help me logically do my job, which includes instrument troubleshooting. Within the last week I troubleshot an instrument called HPLC which had a slightly-malfunctioning mixing valve, only evident when running at highest sensitivity. This was diagnosed by mixing from separate channels (bad) but when pre-mixing and using the same mixing percent was good. That pointed to the mix valve, which costs about $1500. Just for the record here, and not bragging, I graduated with Magna cum Laude and Phi Beta Kappa, years ago. Mrs, Cusser laughs and says I'm the only Phi Beta Kappa on the planet who drives an old B-truck, and she's most likely right. She actually wonders why I'm such a Neaderthal most of the time, says I'm a redneck and low-life. She can't understand how I can view "The Good, The Bad and The Ugly" like 50 times, and why I waste my time on stuff like that. Do you know who wrote the lyrics to the song the prisoners sing in GBU while eli Wallach is getting beat up by Lee Van Cleef and Mario Berga, and what that lyrist is best known for? Answer at end of post. Or who did the English voices of Volente in the "Dollars" films, the drunk captain in GBU, and Mr. Morton in Once Upon a Time in the West? Answer also at end of post.

Mrs. Cusser is no slouch either, has M.S. degree in food science. My oldest daughter is no dummy either, now graduated from college and working full time in another city. My youngest is a junior in Engineering, but she still plays fastpitch baseball league in the summer, and does well (third base), of course the only gal.

My liabilities are not knowing how to type, and I'm pretty mediocre at computer. At work, people think because I know chromatography software and have made safety videos on the computer that I'm like a "computer guy", very far from the truth. I don't joke when I tell that I still use cassettes, just installed that combination CD-cassette unit last week. But yesterday I re-did the speaker wires, resoldered them, as now it appears that my 1994 adapter or the JVC unit had the colors switched, not the B2200, and I forgot to check that out last week when I installed it. Anyway, that only took 45 minutes, and I also lengthened the ground wire in the process. I could've lived with left sound coming from right, and right sound coming from left, but wanted it right, and it was easy as I had just done (and written down) the order of removing/replacing screws for the hump console and stereo console. Now it's fine, may do its 3000 mile oil change since the engine rebuild today.

OK, answers.
1. Tommie Conner wrote the lyrics. He is best known for "I saw mommy kissing Santa Claus", what a contrast.

2. Paul Frees supplied those voices (the original films were made without any live sound, all voices and sound effects added in studio). Frees was a prolific voice actor in the US, how he made his living. Among others, he voiced Disney characters, narration, even Boris Badenoff !!!
mercilessltd   +1y
Sounds like your family has it's stuff straight. That's good to hear, especially in these times with political and economical issues surrounding us, not just in the US but worldwide.

I do also believe I need a new master cylinder for my brakes. I noticed brake fluid (albeit a small amount) between the master cylinder and the brake booster. Sounds like I may have a leak in a seal.

Is there any special procedure for installing a new master cylinder? I've heard some people say you have to bench bleed it, but I dunno if that's really required.