1979 Toyota Pickup Master Cylinder

Tiny
RUSTNGREESE
  • MEMBER
  • 1979 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 125,000 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.
Sunday, May 25th, 2008 AT 5:12 PM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 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)
Was this
answer
helpful?
Yes
No
Sunday, May 25th, 2008 AT 5:26 PM
Tiny
RUSTNGREESE
  • MEMBER
  • 2 POSTS
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
Was this
answer
helpful?
Yes
No
Monday, May 26th, 2008 AT 12:20 PM

Please login or register to post a reply.

Related Bleed - Flush Content

Bleed and Flush Your Brake System Correctly
VIDEO
Bleed and Flush Your Brake System Correctly
Instructional repair video
Brake System Flush
GUIDE
Brake System Flush
An automotive brake system flush is similar to a standard brake system bleed except for all of the brake fluid is flushed out of the brake system components such as the...
VIEW MORE