Master Cyl Push Rod Removal

[Dana67Dart]

I was in the wrecking yard and there was a drum drum master cyl and pushrod just sitting in a 67 Barracuda.

Ok pushrods are good, I'll take it.

So first I pulled and pulled and pulled, nothing, not going to happen.

Next I tried putting a screwdriver through the pedal end in the receiver of a trailer hitch and used the master cyl as a slide hammer, nothing, not going to happen.

Then the light bulb went off over my head....

I took a 10 inch length of brake line and put it 1/2 way through the brake pedal end and looped it back. Then I chucked both ends into my cordless drill and spin it up and pulled up on the drill (master was on the ground)

BAM... 5 seconds later it was out.

Spinning created friction and that heated up the rubber keeper.

NOW.... The piston was frozen into the master and I suspect if it wasn't it would have spun the piston and maybe damaged the cyl bore and piston. Use this procedure with caution.

 

[niceolddart]

I've read in Mopar Action years ago, leave the rod attached to the brake pedal, then just quickly jerk back on the pedal & the rod will pop right out.

 

[Dana67Dart]

I've read in Mopar Action years ago, leave the rod attached to the brake pedal, then just quickly jerk back on the pedal & the rod will pop right out

It might.

My favorite was to put the master on top of the vice with the vise open enough for the pushrod to fit through. Get a rod or dowel, insert it in the brake pedal end and give it a wack down