Deuce brake problems

[Colonel_Weierman]

I recently replaced a wheel cylinder on my 67 deuce. I bled the lines and had straight fluid at all 6 wheel cylinders. The problem is when I am running the truck and I put on the brake it goes clear to the floor. If I pump the brakes twice I get a little brake. If I continue pumping the pedal it goes rock hard and does not brake at all. Is this a master cylinder problem?

Please accept my apologies if this is covered in some other forum.

Alan L Weierman,, Colonel
Southeastern Military Academy
If I fall... I get up
If I'm hurt... I fight harder
If you make me bleed... So shall you
If one of us must die... It will be you
You must know this if you choose to do battle with me,
For I am a survivor, a winner and a warrior and I will ALWAYS go home!
{Warriors Creed}

 

[Barrman]

What kind of pedal do you get with the air system empty? Did you adjust your shoes?

You should have a pedal that will stop the truck with no air present.

Have you checked the clearance of the pedal to master push rod? There should be some slop in there, otherwise the master piston never comes back far enough to let more fluid in, or out. The push rod normally causes brake lock up, but since you are getting a locked up master, I thought it should be mentioned.

Start with the basics. Use a light to look into the master and verify no crud is living down there. Make sure it is full of fluid. At the least, do a Minor brake shoe adjustment on all 6 corners and then go through and bleed all 6 again. If you have already done this. Then I would start thinking about the 5 flexible hoses that could be 40 years old or older, crud in the lines and a bad master or air pack.

 

[Capt.Marion]

I just poked my nose in the troubleshooting manual, and it looks like you'll get a lot of help out of the brake section.

For the Deuce, the Organizational-Level troubleshooting manual is TM9-2320-209-20-2, sections 1 and 2. The brakes are in section 2.

You can download these and the Organizational Maintenance Manual (TM9-2320-209-20-3) from JATonka's website. JATONKAM35s HOME ON THE WEB

 

[KsM715]

Did you bleed the airpack first, before bleeding the wheel cylinders?

 

[glcaines]

 

[jimmcld]

Adjust the brakes!

 

[6x6junkie]

i whould call a layer i think you could sew the gov because you got a lemon

 

[6x6junkie]

oh sorry about the wrong information sew gl they have all the govs money

 

[TexAndy]

I think it's spelled "sow" but I'm not sure what farming has to do with this...