My Tractor Forum banner

Hit a wall removing 420 PTO clutch

1093 Views 15 Replies 8 Participants Last post by  RussKish
I was able to pull the engine out of my 420 tonight (thanks for everyone's advice on the previous belt tension issue). Now, I need to remove the PTO clutch/exhaust system, then intake manifold (in hopes of rebuilding the carb). I was able to remove the PTO armature, then the rotor. I now need to remove the key to get the remaining components of the clutch off so I can access the muffler bolt heads. The key seems pretty stuck in there. Reading other threads, it looks like the first step will be to pick up some penetrating oil tomorrow and get that working. Any other thoughts on tackling this?

Pic attached.


See less See more
1 - 2 of 16 Posts
I use carb cleaner and a penetrating oil together for rapid and deep penetration. Spray the carb cleaner in the cracks first and then spray the penetrate next. Give it a few minutes and then TAP the sides, both, of the key with a brass punch. Do not distort the key or you will truly have issues removing it. If needed you can apply a little heat to the shaft but not the coil plate. Good luck.
I would go for the gear puller on the coil plate after using a lot of penetrant on the shaft and key. There is a lot of surface area on the coil to pull on compared to the little on the key.
1 - 2 of 16 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.