Power Torque crank removal

[merckx]

I have a Centaur alloy PT crank that I cannot remove. I have a Park CPB-8 tool set, and have used one before to remove a PT crank with no difficulty.

I removed the 14mm bolt, slipped the molded pad over the crank arm, then carefully cinched down the caliper assembly making sure that the arms are fully seated and tightened against the molded pad. The crankarm won't budge. I've destroyed 3 molded pads (part #5 in the diagram).

The crank spindle and arm were bathed in grease before installation, and it has only 1,000 dry miles on it. What gives?

[zmalwo]

Have you tried metal on metal without the molded part?

[rohan]

Just making sure you removed the little clip the drive-side!

[merckx]

Originally Posted by rohan

Just making sure you removed the little clip the drive-side!

The drive-side cup clip was removed prior to the NDS arm removal attempt, but how would it prohibit the removal of the left arm if it remained in place?

[Velocipede]

You know what, I couldn't find me PT Crank tools so I used a open Shimano tool and a 2 foot breaker and loosened it that way. The cup as I was loosening it acted as an extractor. No damage to the cup, bearing or crank. Worked well.

[merckx]

Originally Posted by Velocipede

You know what, I couldn't find me PT Crank tools so I used a open Shimano tool and a 2 foot breaker and loosened it that way. The cup as I was loosening it acted as an extractor. No damage to the cup, bearing or crank. Worked well.

I don't know what Shimano tool you are referring to. Do you have a part # or picture?

[PaMtbRider]

I recently removed a power torque crankset with the Park tool. If I remember correctly there was a small washer that had to be removed, or the tool (part #3 in above diagram) pushes against the washer and not the spindle.

[merckx]

Originally Posted by zmalwo

Have you tried metal on metal without the molded part?

I just tried this. Once I determined that the little claws on the puller would not scratch, or gouge the crank arm (I used the cardboard pad that Park includes for carbon arms), I went for it. Well, the damn crank arm wouldn't budge. I kept at it until one of the little claws on the puller snapped off. It's stuck.

Hacksaw may be next.

[merckx]

Originally Posted by PaMtbRider

I recently removed a power torque crankset with the Park tool. If I remember correctly there was a small washer that had to be removed, or the tool (part #3 in above diagram) pushes against the washer and not the spindle.

Bingo.

Pilot error.

Lesson learned.