front right caliper pin stuck on my 1984 w123. ive tried pb blaster and a bit of heat but that has not been working. Ive destroyed the top pin and im not sure what to do at this point other than replace the whole caliper which I dont want to do

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1984 300d 130k daily
1980 300sd 220k ($500 steal )
1999 land cruiser utility/off-road/tow vehicle
Formerly
Om617 swapped 1982 240d aka "rolling probable cause"
2006 v8 4runner
2009 WRX

Are you asking about the pins that secure the brake pads in place? Unfortunately you have already applied heat which is not good at all for the seals in the caliper.

Is this an ATE or Bendix kit? Either way their are brake hardware kits that have replacment pins.

You just need to be careful getting the pin/s out so you don't oversize the holes.

Perhaps you could remove the Hose Connector and remove the whole brake caliper so that it is easier to get a direct blow on the pins with a Punch.

Note heating the area with a propane torch usually does not overheat the seals as it is somwhat far away from the Caliper Seals and the casting is rather large and disperses the heat.
Alternating heat and penatrating oil helps wick in penatrating oil.
An Acytlene torch is a whole other issue.

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84 300D, 82 Volvo 244Gl Diesel

good to know about the heat, I found some replacement pins online. I might try taking off the caliper tomorrow because if I do that I will need to buy the wrenches for it

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1984 300d 130k daily
1980 300sd 220k ($500 steal )
1999 land cruiser utility/off-road/tow vehicle
Formerly
Om617 swapped 1982 240d aka "rolling probable cause"
2006 v8 4runner
2009 WRX

If you remove the Brake Caliper and Hose you can simply exchange for a rebilt Caliper and let the rebuilder worry about removing the Pins.

Of course you would need to buy a brake hardware kit but it sounds like you need that anyway.

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84 300D, 82 Volvo 244Gl Diesel