Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-25-2012, 01:46 AM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
1985 Brake Problems

I have an 85 F250 XLT lariat which currently has a brake leak somewhere on the front drivers side. (It leaks all over the left front frame rail.) It looks dry around the master cylinder, (was replaced by mechanic, don't know if they did it right?).
Anyway the wettest part I can find is where the lines split from that metal connector. I thought the brake lines going to the back of the truck looked loose so I tightened it and it seemed to make the brakes work again but the reservoir level dropped and it seems to be leaking again. If anyone has had the same problem as me I would appreciate any advice I can get.
Reply With Quote
  #2  
Old 09-25-2012, 09:29 AM
Grubbworm's Avatar
Grubbworm Grubbworm is offline
Postmaster
 
Join Date: Apr 2010
Location: Acworth, GA
Posts: 2,935
Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.
theGrubbworms JoEllen Grubbs
First off, welcome to the forum.
Now then, I would check all of the fittings, from one end to the other. I would unscrew them, clean them, check them for any stripping, repair any issues, and then re-tighten them properly. Then, I would check for the issue once again. If the problem still exists I would start looking for a possible split in a line. You might also check for any leaking coming from the underside of the booster, master cylinder, or equalizer valve. I guess that would be a good start. Once you have found it and fixed it I would completely bleed all of the brake lines until fresh clean fluid runs out all of the bleeder screws. Good luck and let us know how it turns out.
__________________
Dave's
1985 Ford F-150 4x2 (pictures),
4.9L 300 I6 / TOD 4spd / 8.8-3.08
Troubleshooting help, for anyone that needs it.
Reward good advice with a note by clicking the left red "Add to Reputation"
button right of the word "permalink" top right of the poster's message.
Reply With Quote
  #3  
Old 09-25-2012, 09:34 AM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,882
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
I don't have that problem. But, I have developed a method of finding leaks on things prone to having fluid run down and get on everything: Clean things completely with brake cleaner and then wrap the suspected part with blue paper shop towels and secure with tape. Check frequently during/after use. I usually can find the leak pretty quickly that way as the towel will get wet where the leak is and, if checked frequently enough, that's the only place that's wet.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
1969 Super Bee awaiting restoration
1950 Chevy 3100 in queue
Worst fear: I die and my wife sells my rides for what I've told her I have in them.
Reply With Quote
  #4  
Old 09-25-2012, 10:07 AM
Grubbworm's Avatar
Grubbworm Grubbworm is offline
Postmaster
 
Join Date: Apr 2010
Location: Acworth, GA
Posts: 2,935
Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.Grubbworm has a great reputation on FTE.
theGrubbworms JoEllen Grubbs
Quote:
Originally Posted by Gary Lewis View Post
I don't have that problem. But, I have developed a method of finding leaks on things prone to having fluid run down and get on everything: Clean things completely with brake cleaner and then wrap the suspected part with blue paper shop towels and secure with tape. Check frequently during/after use. I usually can find the leak pretty quickly that way as the towel will get wet where the leak is and, if checked frequently enough, that's the only place that's wet.
That is a really good idea, I may have to try it sometime.
__________________
Dave's
1985 Ford F-150 4x2 (pictures),
4.9L 300 I6 / TOD 4spd / 8.8-3.08
Troubleshooting help, for anyone that needs it.
Reward good advice with a note by clicking the left red "Add to Reputation"
button right of the word "permalink" top right of the poster's message.
Reply With Quote
  #5  
Old 09-25-2012, 07:02 PM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
The problem appears to be where the brake lines split front to back. The reservoir for the back brakes drops really quickly but the one for the front doesn't at all. I'm going to try and replace the connection I guess? I'll probably try the blue towel thing, then hunt more parts cry a bit and hopefully it works. If it doesn't I'll probably set it on fire. I'll update again in a few hours.
Reply With Quote
  #6  
Old 09-25-2012, 07:29 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,882
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
Good luck! Stay away from the fire idea. Lots of us would love to have the parts.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
1969 Super Bee awaiting restoration
1950 Chevy 3100 in queue
Worst fear: I die and my wife sells my rides for what I've told her I have in them.
Reply With Quote
  #7  
Old 09-25-2012, 08:21 PM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
The problem is that pressure/regulator valve thing. Probably, anyway I've got the towel in it and I have to hunt one down for my mechanic. Any suggestions on where to get one? I'm not going to a junkyard fyi. I'll probably try Lordco. My mechanic says it's something like 1-200 bucks to do my pressure valve thing and another 5-600 for tie rods the drag link and an alignment. What does everybody think about those prices.
Reply With Quote
  #8  
Old 09-25-2012, 08:41 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,882
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
I think paying 100 to 200 for the proportioning valve when you could get one from a salvage for ~$5 is way steep. What do you have against salvages?
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
1969 Super Bee awaiting restoration
1950 Chevy 3100 in queue
Worst fear: I die and my wife sells my rides for what I've told her I have in them.
Reply With Quote
  #9  
Old 09-25-2012, 08:46 PM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
The 1-200 comes from the labour involved in redoing all the lines surrounding the valve. There are no trucks of this generation in junkyards around here. I called 6 junkyards and there's only one truck with different brakes than mine with huge rust. I prefer new parts anyway, well that's not true, I prefer not having to fix **** but, oh well. The price seems reasonable to me, all labour for taking rusty, ****ty things apart. Nothing has been easy on this truck.
Reply With Quote
  #10  
Old 09-25-2012, 09:16 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 19,882
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
Quote:
Originally Posted by regret View Post
The 1-200 comes from the labour involved in redoing all the lines surrounding the valve. There are no trucks of this generation in junkyards around here. I called 6 junkyards and there's only one truck with different brakes than mine with huge rust. I prefer new parts anyway, well that's not true, I prefer not having to fix **** but, oh well. The price seems reasonable to me, all labour for taking rusty, ****ty things apart. Nothing has been easy on this truck.
Works for me if it works for you. Didn't realize you don't have any of these trucks in the salvage up there. Good luck.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
1969 Super Bee awaiting restoration
1950 Chevy 3100 in queue
Worst fear: I die and my wife sells my rides for what I've told her I have in them.
Reply With Quote
  #11  
Old 09-25-2012, 11:56 PM
john59923 john59923 is offline
New User
 
Join Date: Sep 2012
Posts: 22
john59923 is starting off with a positive reputation.
Okay, the valve on the frame is the Proportioning valve and mine is not working well and is leaking also. There are plenty of spare(i.e., used) parts in this neck of the woods, but like you, I don't trust used parts when it comes to the brakes(bad brakes could kill someone). The valve is easy to replace. There are only five lines to loosen and two bolts that hold it to the bracket. The problem comes in when bleeding. The bottom of the valve also needs to be bled(the spring portion at the bottom of the valve doesn't bleed well). It takes a 3/4 box end wrench to loosen.
You MUST have clear new fluid flowing solid(no bubbles) flowing from it in order to ensure that the valve has bled properly. Then, bled the brakes normally.

A footnote: if the new master cylinder has not been bench bled properly it will not work(spongy pedal, soft brakes) properly.
Reply With Quote
  #12  
Old 09-26-2012, 12:30 AM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
Yeah I'm pretty sure the master was done right because when i top up my brake fluid I can lock up all four wheels. Very quickly after that it doesn't work anymore. To be quite honest I think one of the lines might be split as well and I don't really have the time/ knowledge/ tools to be screwing around with my daily drivers brakes. I feel way more comfortable painting something than pulling on my rusty brake lines. The truck is rusty . . .
Reply With Quote
  #13  
Old 09-26-2012, 12:37 AM
john59923 john59923 is offline
New User
 
Join Date: Sep 2012
Posts: 22
john59923 is starting off with a positive reputation.
Quote:
Originally Posted by regret View Post
I feel way more comfortable painting something than pulling on my rusty brake lines. The truck is rusty . . .
I hate rusty stuff--makes things way more difficult....

Make sure it is not a line that has rusted through....

Like my rear fuel tank, and I missed the part about the line in your reply

Last edited by john59923; 09-26-2012 at 12:42 AM. Reason: f-d up
Reply With Quote
  #14  
Old 10-03-2012, 01:22 AM
regret regret is offline
Freshman User
 
Join Date: Sep 2012
Location: Vancouver Canada.
Posts: 26
regret is starting off with a positive reputation.
The problem was the proportioning valve part of the brake metering valve/proportioning valve assembly. There are no assemblies around here only one truck I found within 100 miles. Also Ford doesn't have the part either.Anyway the universal proportioning valve was 70 bucks and my mechanic charged me 100 bucks to plug up the broken assembly and route the line through the new proportioning valve. The light on my dash which tells you when you lose brake line pressure doesn't work anymore as a result of the ghetto fix. It never worked but anyway this is how my problem was resolved. Also I tried the blue towel thing, I went to the grocery store and back home and the towel was absolutely soaked, like less than 5% of it was dry lol.
Reply With Quote
Old 10-03-2012, 01:22 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
brake fluid loss ... perportioning valve? fox3698 Brakes, Steering, Suspension, Tires, & Wheels 1 04-15-2011 09:56 PM
Rear brake line leaking sundancer330 Super Duty & Heavy Duty 3 10-09-2010 10:15 PM
Sudden brake problem vvsarpsjr Excursion - King of SUVs 7 10-04-2010 07:50 PM
2000 F350 front to rear brake line w.a.nelson Brakes, Steering, Suspension, Tires, & Wheels 6 10-27-2008 04:07 AM
94 F150 2WD Front Driver side Brake Line Leak robin22m 1987 - 1996 F150 & Larger F-Series Trucks 3 11-27-2006 09:47 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 02:34 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup