the master cylinder for my brothers brakes are shot, is it pretty easy to just put a new one in?

 

 

generally they aren't bad to replace. Make sure you bench bleed the master BEFORE you install it.

 

What does bench bleed mean?

 

They are fairly easy to take off and put back on, but good luck with it , my buddy with a 93 has been through 5 (or maybe 6) master cylinders, a couple of them only lasted a matter of days , some for a week , and he drove around most of the spring/summer/fall with a bad one because he got fed up with changing it.

 

2 fittings and 2 bolts, not hard at all. About an hour including bench bleedeing and bleeding the brakes.

Bench bleed means to stick the master in a vise and bleed all the air out of it before you put it in the truck. Instructions will be included with the new master. You must do this or you will never get all the air out of the system.

 

Seems I recall they want you to run a fitting and short tube from the "Goesoutta" pipe(s) up and down into the brake fluid reservoir. The end of the tube(s) needs to be submerged in the fluid. Pump the piston (where the brake pedal shaft plugs in) till no bubbles are seem coming from the tubes. You'll feel the piston tighten up in the process.

I think that's how it goes.

 

jkm tell your friend master cylinder is not the trouble its the booster i had same prob with mine