baker hill help

[racerone3]

i'm trying to get my first gen attex going, and have run into a bind (litteraly) with the trany. the right side works fine, but the inner puck on the left is stuck. seems like the sticks were in the back position for the last 25+ years as the puck is out against the rotor hard. i can't get the rotor to turn at all. i've been soaking with penetrating oil and tried prying the rotor in a manner that should push the puck in. i've gotten the engine running, so all that's keeping me from taking it for a spin is this caliper. the machine is going to get a total teardown, but i'd like to run it once before it does, thus pulling the trany wasn't on this weeks to do list. any ideas are welcome! i haven't taken a torch to it yet, is there anything in the caliper that i'm gonna ruin with heat?

[LarryW]

There are some little oil holes in the caliper. Take a little drill and manually hand spin it in them and get all the goop out and make sure there not plugged with debris. Then you can try oiling them. I

Does the arm linkage in the caliper move at all? Just wondering if its that shaft or if its the piston part thats seized.

If its the piston part the arm should wiggle a little. I would try hitting the rotor with a rubber mallet towards the seized puck. The rotor has some play in it and maybe you could get it loose doing that. You may have to wedge something in the caliper so it dont slide on the slider pins that are in the tranny frame.

If its the arm then it shouldnt wiggle at all and the rotor method may damage the pin in the arm shaft. But you could try tapping the arm with a hammer and the pin thing should be ok.

The first picture up close is the pin Im talking about. Second is the caliper exploded view.

If something does break, let me know. I have a few extra parts for one but not a complete caliper. You could just have them if needed. Good luck.

[racerone3]

thanks Larry,
i feel stupid admitting this, but i'll post it anyway in hopes that it may help someone else down the road. what i discovered was that the puck was disengaging fine. however the pucks seem to have swollen over the years, so the fixed puck was actually the one pushing on the rotor. all i had to do to free it up was back off the adjustment on the fixed puck
yes i feel like a moron...

[LarryW]

thanks Larry,
i feel stupid admitting this, but i'll post it anyway in hopes that it may help someone else down the road. what i discovered was that the puck was disengaging fine. however the pucks seem to have swollen over the years, so the fixed puck was actually the one pushing on the rotor. all i had to do to free it up was back off the adjustment on the fixed puck
yes i feel like a moron...

Sweet!!! I was really getting stumped. I never seen one as stuck as you described yours. Glad you got it.