Jump to content

IGNORED

Picture of check 240z valve location please?


AndyStep12

Recommended Posts

Could someone please post a pic of their 240z brake check valve?  I can’t locate mine maybe it doesn’t exist  

My running, almost rust free 1973 240z scraed me a bit on my first drive yesterday. The brakes are horrible. Feels like when I botched a bleeding on my wife’s brakes years back. 

Lots of pedal effort with just gradual slowing. Applying brake while idling causes an increase in RPM. A squishing airish sound when the brakes are first applied. 

I was originally thinking it was definitely the booster.  Then I started to wonder about the check valve.  I can’t even find the check valve.  I assume it’s on the vacuum line somewhere between the brake booster and the engine.

Assistance would be greatly appreciated.

 

Link to comment
Share on other sites


I agree with Patcon---diaphragm is ruptured or reaction disk has dropped---the pedal effort, increase in rpm and squishing airish sound are all telltale for one--the other-- or both.

Crappy photo of the check valve location-----look just below the hood opening and just above the throttle linkage at the firewall----the check valve holder is above and  to the left of the brake booster---follow the hoses, round and black with a little red showing---the red is the check valve.

 

 

brake booster check valve.jpg

Link to comment
Share on other sites

  • 2 weeks later...

I bought the smaller 240 one from amazon.com.  after returning the core I think was about $100.  Had to paint and installation was a real tough job for me.

A couple of things that I figured out that maybe useful.  Take a wire and attach it the the master cylinders then to the ceiling for me but you can figure something else  but if you secure the MC you won't have to remove the lines, just unbolt from the booster and move it out of way.  Loosen the nuts above the pedals first, that was the hardest part for me.  I'm no yoga person and getting under there was a PITA.  

Get a razor blade and remove the OE red sticker off the old one. Paint the new one and glue the red sticker on, looks like 1972 again.

Good luck.

Link to comment
Share on other sites

47 minutes ago, siteunseen said:

Loosen the nuts above the pedals first, that was the hardest part for me.  I'm no yoga person and getting under there was a PITA.

Second that.  The top two nuts are hard to get started on their threads when reassembling.  Kneel on garage floor, lean in off balance, then then try to make arms reach back to the left so that two or three fingers holding nut can find their way into dark, confined recess.  Wins my vote for 'Top 10 Most Difficult Fasteners'.  Other nominations?

  • Like 1
Link to comment
Share on other sites

26 minutes ago, Namerow said:

Second that.  The top two nuts are hard to get started on their threads when reassembling.  Kneel on garage floor, lean in off balance, then then try to make arms reach back to the left so that two or three fingers holding nut can find their way into dark, confined recess.  Wins my vote for 'Top 10 Most Difficult Fasteners'.  Other nominations?

What I did was to build a bench that was about the height of the door sill. I could lie on my back and reach up to get those nuts. It was much more comfortable that way.

  • Like 3
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.