I just returned from a several day road trip with slide-in camper aboard my '74 Hi-Boy. During the trip, I started noticing that the brake lights were often reflecting red="ON" on the inside of the camper even after I had released the pedal. I don't know how long this may have been going on since I hadn't had occasion to have the camper loaded before. At any rate, I looked under the dash to see if something was rubbing, or the brake light switch was out of position, and everything looks just fine. I had found the switch knocked out of position a couple of times before after the car alarm guys finished working, so that was my first suspicion. When I put my toe under the pedal to see if I could raise it, I got perhaps 1/4" upward movement max, no more. There is no sign of dragging brakes that I can discern, tho with my fine new FE410 they would have to drag pretty hard to slow it down. LOL!! I should also mention that I have a '77 Dana 44HD axle with disc brakes, genuine Ford proportioning valve, '77 master cylinder mounted to the '74 power assist. Anybody else have this problem, and what did you do about it?
Thanks, Steve
You may need to remove the master cylinder and adjust the pushrod a bit longer to take up the slack in the pedal. Just don't go too far or your brakes will drag. The best way that I know how to do it is to adjust it out until when you put the m/c up against the booster, you feel it trying to push away from the booster( like it is pushing the piston in ), then adjust it back in a bit at a time until the resistance goes away. This should help with the slop.
You could also have a weak return spring in the booster itself. Try the adjustment and see what happens. It has worked for me several times and even gives you a higher brake pedal when they are applied.
Jimmy
I am having the same problem with my 78 f150, after looking around I found that the bolt that holds the brake pedal arm to the rod that goes through the firewall was loose allowing the pedal to fall down a little bit. Hope that helps
Joe
If not, Reach down on the side of the pedal and re-adjust the brake switch by pushing up toward the dash.
It will automatically move to the right place
If the switch moves too easy ,then find another brake switch holder clip.
I had that same problem with my truck. All I did was attach a spring to the brake pedal and the dashboard. No more slow pedal and the brakes work fine.
on a chevy truck i had ,it did the same thing after lettin somebody use it to move,i think he raised a lil hell in it,but neglected to tell me.but thats ok,i never told him what happend to his lil turbo whatever it was either lol.but anyway,a pedal return spring took care of the brake pedal.i noticed them recently at Advance on the HELP isle for about $6.
Thanks for the responses! I'm beginning to think that I probably just need to take another look at the switch bracket, since it was knocked loose a couple of times and didn't seem real secure when I re-set it. Nope, no cruise control. But definitely have multiple things to look at now, thanks to all of you! Steve
Dennis, check the last post above yours. No cruise.
BTW I had one that the spring in the switch went bad so the brake lights would come on. Replaced the switch.
Just my 2¢
Greg
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'77 F-250 Camper Special 400ci driver
'76 F-250 Supercab 360ci current project
'71 Mach I 429CJ in storage
'79 F-150 for parts
huct on foniks wurkt fer me
truck i had ,it did the same thing after lettin somebody use it to move,i think he raised a lil hell in it,but neglected to tell me.but thats ok,i never told him what happend to his lil turbo whatever it was either lol.but anyway,a pedal return spring took care of the brake pedal.i noticed them recently at Advance on the HELP isle for about $6.
