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Forum namePerformance/Engine
Topic subjectCrank sprocket removal
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=60441
60441, Crank sprocket removal
Posted by mkerley, Sep-30-03 02:08 PM
I've read several posts that deal with installing, but very few about removal. I've seen several cracked sprockets too. Surely I don't have to buy the special tool...what has everyone else done (that worked)?

Thanks!
60442, RE: Crank sprocket removal
Posted by XtremeRS, Sep-30-03 02:25 PM
The timing belt sprocket? Or do you mean the accessory drive pulley?
60474, RE: Crank sprocket removal
Posted by thedawg, Sep-30-03 09:56 PM
It's tough, but simple. All you really have to do is find 3 bolts.

- Soak the sprocket in Liquid Wrench every 10 minutes
- Get a regular harmonic balancer puller (3 slots for bolts)
- Go find some SUPER hard-to-find bolts that will fit.
- You'll need about 130mm long, grade 10.5 bolts if you can find em. (130mm x 6mm x 1.0 I think)
- Add several washers, and lubricate all threads and hardware with moly or grease.
- Torque each of the 3 bolts down evenly and make sure the puller is perfectly centered.
- Block the puller from rotating AT ALL. I use a huge 4x8, 2x4's, and big clamps.
- Soak it in Liquid Wrench again.
- Impact wrench. I've done it by hand but the bolts shear easier.

I searched about 10 industrial supply vendors specifically dealing in bolts and hardware. These bolts are HARD to find. Finally found the bolts at a frickin PepBoys though, so there's hope.

As an alternative, you can buy Grade 5 threaded steel rod just about anywhere. It will shear off and explode about 20 times, but eventually you'll get it.
60477, RE: Crank sprocket removal
Posted by Kirby, Oct-01-03 05:39 AM
^^^ Bingo I found mine at pep boys too...lol They are the same thread size and pitch as the bolts for your timing belt cover and they need to be longer just like ^^^^ he said. I got mine off with no problems and didn't even break a bolt.