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Honda Accord (1990-1993) Maintenance and Repair

2104 messages,  Last post on Apr 16, 2013 at 7:09 AM

You are in the Honda Accord Forum.

What is this discussion about? Honda Accord, Electrical, Engine, Coupe, Sedan

Messages Page 69 of 211

#676 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [lilengineerboy] by cstout73

May 14, 2007 (6:34 pm)

Replying to: lilengineerboy (May 05, 2007 5:09 pm)
I too have a 1993 Honda Accord that I think the Master Cyliner is going. I have replaced the pads and they are good but the brake pedal is soft. I dont think its the power assist (I followed the Haynes Book to check). I am considering buying a OEM master cylinder and replace it myself but I don't know how to bleed the brakes or change the brake fluid with ABS brakes. 1992RustBucket - Did you do it yourself? How did it go? Can anyone give me some tips?
My experience: I haven't bleed brakes before. I have changed pads several times. I replace the radiator myself.

#677 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [cstout73] by elroy5

May 14, 2007 (6:54 pm)

Replying to: cstout73 (May 14, 2007 6:34 pm)
Here is a link that may be helpful. There should be instructions on how to bench-bleed the MC with the MC when you buy one. Good luck.
http://syclone.motocrew.com/CG5/brakebleed.htm

#678 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [cstout73] by elroy5

May 14, 2007 (7:01 pm)

Replying to: cstout73 (May 14, 2007 6:34 pm)
The master cylinder usually goes out shortly after a pad change. If the fluid has not been changed often the moisture in the fluid will cause the MC shaft to rust. When bleeding the brakes, when the pedal goes to the floor, it pushes the rusted and mostly unused portion of the shaft through the seals, tearing them up. This is why I recommend using a vacume pump to bleed the brakes, instead of the old fashioned way of pumping the brake pedal.

#679 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [elroy5] by lilengineerboy

May 15, 2007 (1:04 pm)

Replying to: elroy5 (May 14, 2007 7:01 pm)
The master cylinder usually goes out shortly after a pad change. If the fluid has not been changed often the moisture in the fluid will cause the MC shaft to rust. When bleeding the brakes, when the pedal goes to the floor, it pushes the rusted and mostly unused portion of the shaft through the seals, tearing them up. This is why I recommend using a vacume pump to bleed the brakes, instead of the old fashioned way of pumping the brake pedal.
 
Unless you are some totally anal freak who actually changes the brake fluid every 2 years or so

#680 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [elroy5] by cstout73

May 15, 2007 (1:36 pm)

Replying to: elroy5 (May 14, 2007 7:01 pm)
Here is my plan - I am going to purchase a new Master Cylinder (I am assuming this is the reason for the soft brakes - 140k miles on the car & I have never changed brake fluid), get some new blake fluid, and install the master cylinder and replace brake fluid WITHOUT using the recommended ABS Checker/Scanner.
Anyone see any issues with that??? Whats the worst that could happen? I am assume too that the booster is good.

#681 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [cstout73] by kiawah

May 15, 2007 (2:08 pm)

Replying to: cstout73 (May 15, 2007 1:36 pm)
I think you should just bleed the brakes. I've always done my own vehicle repair, and we have easily over a million miles on our vehicles over the years.....and I've NEVER had a master cylinder go bad.
 
Had to replace and/or rebuild a number of brake cylinders, replaced a number of calipers. Master cylinders? Never even on our very old very high mileage vehicles.
 

#682 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [kiawah] by lilengineerboy

May 15, 2007 (2:12 pm)

Replying to: kiawah (May 15, 2007 2:08 pm)
I have replaced the MC, as has Elroy.

#683 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [lilengineerboy] by elroy5

May 15, 2007 (2:21 pm)

Replying to: lilengineerboy (May 15, 2007 1:04 pm)
Honda maintenance schedule says to change the brake fluid every 3 years (no matter what the miles are). I plan to do it every 3 years, so maybe I will not have to change the MC on this car. The service manual for my 03 Accord says to bleed the brake lines only (not the abs). It does say to activate the abs (make the abs system activate), then bleed the brakes again. My fluid was not that bad (first 3 years of the car's life), so I decided that was not necessary this time. When the MC went out on my old car, the fluid was very dirty.

#684 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [lilengineerboy] by kiawah

May 15, 2007 (2:45 pm)

Replying to: lilengineerboy (May 15, 2007 2:12 pm)
But if he has never bled the brakes, to change the fluid and get any air out of the lines....why would one jump to recommend a MC replacement? That would be the last thing on the list.

#685 of 2104 Re: 1992 Accord Master Cylinder (brake) replacement [kiawah] by elroy5

May 15, 2007 (3:02 pm)

Replying to: kiawah (May 15, 2007 2:45 pm)
Yes, if he hasn't tried bleeding the brakes, he should try that first. Even if the MC does turn out to be bad, the lines will already have clean fluid in them.

Messages Page 69 of 211

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