1979 TOYOTA PICKUP MASTER CYLINDER

  • Tiny
  • rustngreese
  • 1979 Toyota Pickup

Brakes problem
1979 Toyota Pickup 4 cyl Four Wheel Drive Manual 125000 miles

I replaced the master cylinder on this pickup because there was an obvious internal leak. When I went to bleed the brakes everything went as normal bleeding the rear right first then rear left. When I was done, the pedal was rock hard with only 2 inches of play and no squish, making it impossible to bleed the fronts. Has anyone heard of this problem? I am suspecting a problem with the new master cylinder, (it's new not reman). The truck has drum rears, and disc fronts. Any thoughts on the subject would be greatly appreciated. Thanks.

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Sunday, May 25th, 2008 AT 5:12 PM

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  • Tiny
  • mhpautos
  • Expert
  • 30,598 posts

Hi there,

I would be inspecting the master cyl if the pedal has gone rock hard, you may be just unlucky and got a defective one. Just one thought if you can still bleed the rears and not the fronts, I also would be looking at any proportioning valve fitted as well.

Mark (mhpautos)

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Sunday, May 25th, 2008 AT 5:26 PM
  • Tiny
  • rustngreese
  • Member

Thanks for the reply Mark. You are right, I was one of the lucky ones with a defective master cylinder. Again, thanks for your input. Randy

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Monday, May 26th, 2008 AT 12:20 PM

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