Crank pulley seized onto crank--93 mtx

[austindavis1993]

I for some reason cannot remove my crank pulley. i have tried a pulley puller set and all it did for me was rip the threads out of my 2 crank pulley bolt holes. any help and or suggestions please, i really want to get my side maintenance finished up.

 

[Dirk37]

Use some sort of penetrating oil on it overnight (PB blaster) then try lightly tapping it with a hammer before trying to remove it. You'll probably need to re-thread those holes you stripped but if they go all the way through you could try to get a nut on the other side.

If the oil and tapping don't work, you can carefully torch the center but you don't want to get it too hot or else you'll melt the rubber dampening in the pulley.

 

[austindavis1993]

Yeah i will try that out, but it literally looks like somebody glued this thing to the crank with something.

 

[pjtoledo]

here's a method I used last fall. you will need to re-tap the holes, or get nuts behind them first.
the idea is induce energy/vibrations into the crank & dampner mating surfaces.

start with the standard procedure:
attach a puller that has a big center bolt that presses against the crankshaft, or the bolt of your choice screwed into the crank.
get lots of tension on the puller, but not enough to break or strip stuff.
using a regular sized hammer give the end of the puller bolt 3 sharp smacks.
not wallups, just smacks, you're nnot trying to deform metal.
the energy from the hammer should go directly thru the bolt to the crank.
tighten the puller a little bit more, then 3 more smacks, tighten more, 3 more smacks.
repeat as necessary, maybe 100 times until its off.
you may only get .001" movement on each of the first 10-30 cycles.
as with most rusted or stubborn parts, patience is a must.


Perry

 

[SHOtime2511]

air hammer and let it eat.