Removal of coupling of char-lynn hydraulic pump

[Ascending Tree Care]

Cannot seem to remove coupler to feed wheel off of hydraulic pump. I have already tried a pulley puller, hammer/punch, any suggestions

 

[TRTermite]

Cannot seem to remove coupler to feed wheel off of hydraulic pump. I have already tried a pulley puller, hammer/punch, any suggestions

Allen head set screw? If so check for a set screw under another set screw.

 

[TRTermite]

Cannot seem to remove coupler to feed wheel off of hydraulic pump. I have already tried a pulley puller, hammer/punch, any suggestions

Is the pump shaft what you are trying to get the coupler off of? If so is the pump shaft Keyed or splined? and how is it secured to the shaft?

 

[Ascending Tree Care]

Is the pump shaft what you are trying to get the coupler off of? If so is the pump shaft Keyed or splined? and how is it secured to the

 

[Ascending Tree Care]

Don't really see a key, feel like it's pressed

 

[benz66]

try a soak with ATF+acetone, kroil, or Mopar rust penetrant. Then puller.

Or try heat in the collar area around the shaft. Even a propane torch may help. Acetylene would help more. Then pull.

 

[TRTermite]

Am I seeing threads inside at the bottom of pic #1 (besides the Puller threads)?
And you said "Pump" and "Coupler" So this is a pump and Is driven from what kind of coupler? I assume the ?"DRUM?" you are trying to remove doesn't rotate with pump shaft, so where the puller threaded shaft is pushing are there internal threads in the pump shaft? Can You show us a Pic of the rest of it all? I will admit not having a ready answer but that doesn't mean someone won't have one for you.