Toro 22" self propelled pinion gear on axle seized!!

[trooper1954]

Hi all,
Have a different issue from my mikuni carb finally .....cannot get the pinion gear off the end of the drive axle on the above mower......copious amounts of Deep Creep penetrant over 3 days, and also heat from a torch to almost red hot.....still won"t come off!!! And in trying to pry it off I've destroyed the plastic washer that sits behind it, so in order to repair both, the pinion gear has to come off!!!
Any other suggestions greatly appreciated.

 

[SeniorCitizen]

Might try a 3 jaw puller if applicable . May locate one at a tool rental if owning isn't wanted .

 

[StarTech]

It is going to be rusted on.

More likely need a bearing separator puller with disposable pusher block. With some good penetrating oil or maybe even some heat.

 

[trooper1954]

Star Tech.....see my original post. Both heat and penetrating oil have been used extensively with no luck. Searching for a bearing separator now....will a two inch one work behind such a small pinion gear.....about 1 1/2"??

 

[trooper1954]

here's the problem....

Star Tech.....see my original post. Both heat and penetrating oil have been used extensively with no luck. Searching for a bearing separator now....will a two inch one work behind such a small pinion gear.....about 1 1/2"??

 

[StarTech]

Here is something I suspect going here too. The groove for the retaining ring has flared. Push the gear back on and file the ridge off the shaft at the retaining area. This flaring is like knurling by increasing the shaft diameter thus binding even tighter as you attempt to pull past it. Due to close tolerances already present this is like beating to shaft end, flaring the shaft. Imagine that you trying to pull something off a taper shaft the wrong direction, just not possible. It doesn't take a whole lot to cause problems.