1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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  #16  
Old 09-23-2017, 12:17 AM
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The rubber line at the axle could be blocked too.

Old unknown wheel cylinders really should be replaced. I'm pretty sure my truck sat for a while before I owned it, and I found both of my wheel cylinders to have their rear pistons seized in the bores.
You'll have to actuate the pressure differential valve to bleed the fronts.
 
  #17  
Old 09-23-2017, 03:54 PM
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Originally Posted by foofees
If you're gonna buy a new MC, buy one for a '95 explorer workout cruise control. It's aluminum, so it will never rust, and the ports are on the driver side! You will have to buy adapters for the lines because of double flares or something of that nature. Search it on this website and you'll find part numbers for them.
The '95 Explorer MC (w/o CC, w/o traction control, part number NMC M3246) has a 1-1/16" bore diameter. The primary port requires an M10 x 1.0 metric bubble flare fitting. The secondary port requires an M12 x 1.0 bubble flare fitting. Direct connection fittings are available through Classic Tube. With these, ugly fitting adapters are not needed.

Classic Tube part number for the M10 x 1.0 fitting is ST8036. The M12 x 1.0 fitting is part number ST8040.

I intalled this setup in my truck in 2014 and have posted information in various threads here on its installation since that time.




Another similar setup I installed in a friend's '72 F100 1 year ago this month.

 
  #18  
Old 09-23-2017, 09:10 PM
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[QUOTE=ultraranger;17481430]The '95 Explorer MC (w/o CC, w/o traction control, part number NMC M3246) has a 1-1/16" bore diameter. The primary port requires an M10 x 1.0 metric bubble flare fitting. The secondary port requires an M12 x 1.0 bubble flare fitting. Direct connection fittings are available through Classic Tube. With these, ugly fitting adapters are not needed.

Classic Tube part number for the M10 x 1.0 fitting is ST8036. The M12 x 1.0 fitting is part number ST8040.

I intalled this setup in my truck in 2014 and have posted information in various threads here on its installation since that time.


SEE! I knew somebody who knows more than I would come along with part numbers. This is why I love this site. Thank you ultraranger.
 
  #19  
Old 09-24-2017, 11:14 AM
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[QUOTE=foofees;17482078]
Originally Posted by ultraranger
The '95 Explorer MC (w/o CC, w/o traction control, part number NMC M3246) has a 1-1/16" bore diameter. The primary port requires an M10 x 1.0 metric bubble flare fitting. The secondary port requires an M12 x 1.0 bubble flare fitting. Direct connection fittings are available through Classic Tube. With these, ugly fitting adapters are not needed.

Classic Tube part number for the M10 x 1.0 fitting is ST8036. The M12 x 1.0 fitting is part number ST8040.

I intalled this setup in my truck in 2014 and have posted information in various threads here on its installation since that time.


SEE! I knew somebody who knows more than I would come along with part numbers. This is why I love this site. Thank you ultraranger.
You're welcome, my good sir.
 
  #20  
Old 09-28-2017, 07:53 AM
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Those are some slick setups! I love the idea of having the proportioning valve right by the MC - gotta make it easier to bleed / troubleshoot.

I think my biggest brake issue is a lack of vacuum. I ran the engine for a little while the other day to move it around the yard and there was smoke coming from the manifold. Might not have much vacuum - I'll have to troubleshoot when I get to the mechanical portion of our program.
 
  #21  
Old 10-06-2017, 12:23 PM
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Finally pulled the MC and booster.






Loads of surface rust and a little interior rust, but am I wrong in thinking that the seals looked good overall? Salvageable?

I haven't taken a look at the vacuum issue yet (maybe in three weeks), but this is what I'm working with, so far. Probably running new lines since I've taken nearly everything off the frame.
 
  #22  
Old 10-06-2017, 01:14 PM
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Originally Posted by applebaggins
Finally pulled the MC and booster.






Loads of surface rust and a little interior rust, but am I wrong in thinking that the seals looked good overall? Salvageable?

I haven't taken a look at the vacuum issue yet (maybe in three weeks), but this is what I'm working with, so far. Probably running new lines since I've taken nearly everything off the frame.
I would plan on changing out BOTH the MC and the booster. Brake fluid has most likely migrated over into the booster. Brake fluid attacks the rubber of the diaphragm inside. You're living on borrowed time until the diaphragm finally ruptures.

I would not suggest getting a combination of a MC and brake booster together. Buy a new (not remanufactured) MC, separately. Booster/MC combos come with rebuilt MCs.
 
  #23  
Old 10-06-2017, 01:49 PM
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Originally Posted by ultraranger
Booster/MC combos come with rebuilt MCs.
GTFO! I didn't know this. I was just looking at combos. Thanks for the save, man - much appreciated.
 
  #24  
Old 10-06-2017, 01:56 PM
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Many of the sites I'm looking at have remanufactured brake boosters. Is there a reputable place to buy new boosters?
 
  #25  
Old 10-06-2017, 02:13 PM
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Originally Posted by applebaggins
Many of the sites I'm looking at have remanufactured brake boosters. Is there a reputable place to buy new boosters?
My re-manufactured dual diaphragm booster came from O'Reilly's. It's been running for 3 years now with no problems.
 
  #26  
Old 11-09-2017, 06:08 AM
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I've slowly been replacing much of the brake system and am looking at the rear axle brake hose junction block. How is that block secured to the axle? I'm assuming that the nipple the vent hose attaches to is a bolt that's threaded through the block and into the axle. Correct?
 
  #27  
Old 11-09-2017, 06:39 AM
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Originally Posted by applebaggins
I've slowly been replacing much of the brake system and am looking at the rear axle brake hose junction block. How is that block secured to the axle? I'm assuming that the nipple the vent hose attaches to is a bolt that's threaded through the block and into the axle. Correct?
Slips through the brake block and threads into the axle tube. The bolt has a hollow through it to allow the venting. I've read some posts that say the hollow makes the "bolt" weak and it will twist in two compounding your problems. Mine came out without any problems.
 
  #28  
Old 11-09-2017, 06:58 AM
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Originally Posted by jaleus
Slips through the brake block and threads into the axle tube. The bolt has a hollow through it to allow the venting. I've read some posts that say the hollow makes the "bolt" weak and it will twist in two compounding your problems. Mine came out without any problems.
Thanks a million! Mine is rusted pretty well, but I can move the block and get some PB under it. That should help.

I'm assuming that most of these are 7/16"-20 bolts and that they're pretty interchangeable between Ford vehicles?
 
  #29  
Old 11-09-2017, 11:45 AM
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Mine came out OK, and I found it to be plugged with mud or whatever, so badly that I needed a drill to clear it.
 
  #30  
Old 11-15-2017, 02:30 PM
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Got the rear axle sorted out! Replaced it all and it fits perfectly.

And now, on to the next dilemma....

I got a replacement parking brake cable and the front cable screw has a pinhole for a spring to go through, but there was no spring when I got the truck. Do I need to get one and, if so, any idea what size spring is needed?

Thanks!
 

Last edited by applebaggins; 11-15-2017 at 02:58 PM. Reason: Solved my earlier problem


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