1971 F600 brakes

1970Custom · Mar 8, 2014

Trying to figure out the brake system on the truck.

Replaced the master cylinder, but dont have any brake pressure but no leaks to be found.

It has the booster under the cab? Can somebody explain the system to me, please.

Blue Goose · Mar 8, 2014

No pressure or no pedal?

DNFXDLI · Mar 8, 2014

I'm looking in the 71 shop manual and it does say frame mounted

DNFXDLI · Mar 8, 2014

Have you confirmed you have vacuum to it?

1970Custom · Mar 8, 2014

Brad, step on the pedal and it goes to the floor...

Duncan, can you tell me the parts attached to the booster? Or the parts not common with the pickups?

DNFXDLI · Mar 8, 2014

Parts look different from what I can tell...also, it seems there are a few different choices. Do you want me to scan and post them?

1970Custom · Mar 8, 2014

Could you please.

DNFXDLI · Mar 8, 2014

Gimme a few minutes

DNFXDLI · Mar 8, 2014

1970Custom · Mar 8, 2014

Looks to be the first one. Now if Brad can tell me how it works....

Thank you Duncan.

DNFXDLI · Mar 8, 2014

Do you have vacuum going to it?....that would be the first thing I would check.

DNFXDLI · Mar 8, 2014

1970Custom said:
Looks to be the first one. Now if Brad can tell me how it works....

Thank you Duncan.

Anytime

1970Custom · Mar 8, 2014

DNFXDLI said:
Do you have vacuum going to it?....that would be the first thing I would check.

I have no pedal pressure, I pumped till my leg was sore and got nothing.

DNFXDLI · Mar 8, 2014

1970Custom said:
I have no pedal pressure, I pumped till my leg was sore and got nothing.

I got that...but isn't there a line that supplies the booster with vacuum?
On the other hand, if there is no vacuum, the pedal should get stiff....hmmm.

Blue Goose · Mar 8, 2014

Did you have the engine running while bleeding the system?

1970Custom · Mar 8, 2014

Blue Goose said:
Did you have the engine running while bleeding the system?

Haven't even attempted it yet, any other time I've replaced a MC I had some pedal pressure, and coupled with me not totally understanding the system I figured I'd ask beforehand.

Blue Goose · Mar 8, 2014

I've always had to have the engine running creating vacuum and thus activating the hydro-vac...

DNFXDLI · Mar 8, 2014

Blue Goose said:
I've always had to have the engine running creating vacuum and thus activating the hydro-vac...

That would make sense

1970Custom · Mar 8, 2014

Okay, can you explain how the system works though? I don't fully understand it.

DNFXDLI · Mar 8, 2014

http://www.stovebolt.com/techtips/bendix/erickson/

Join Our Ford Truck Forum Today

1971 F600 brakes

They call me Spuds

The Token Canadian

The Token Canadian

They call me Spuds

The Token Canadian

They call me Spuds

The Token Canadian

The Token Canadian

They call me Spuds

The Token Canadian

The Token Canadian

They call me Spuds

The Token Canadian

They call me Spuds

The Token Canadian

They call me Spuds

The Token Canadian