How to remove crank gear?
08-27-2005, 04:44 PM
#1
Three Wheelin'
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How to remove crank gear?
I'm talking about the little gear that drives the timing belt. I would desperately like to replace the main oil seal while I'm doing the TB R&R, but the freakin' gear will not budge! I've gotten the smallest pry bar (with a block of wood so as not to damage the block) that will fit and used lots of PB blaster, but to no avail. Would a gear puller do the trick? Also, the plastic back part of the timing belt cover gets in the way--but with that gear in place, its got to stay.
08-27-2005, 04:57 PM
#2
Flint,
I was able to find a puller at the local AutoZone that I could get behind there without cracking the cover too much.
Once it started moving, it wiggled off with little resistance.
Dennis
I was able to find a puller at the local AutoZone that I could get behind there without cracking the cover too much.
Once it started moving, it wiggled off with little resistance.Dennis
)
08-27-2005, 05:53 PM
#4
Under the Lift
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Smack the gear from the side with a plastic headed hammer to try to break the corrosion. This should do so without harming the gear. The gear is just slipped on, and if there is no corrosion it slips off usually without any serious effort. Prying on one side will just jam it on more. Smacking it from the side some more once the corrosion breaks, will vibrate it forward.
08-27-2005, 06:00 PM
#5
Chronic Tool Dropper
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On my car, the woodruff key was installed with just enough"tilt" to it to keep the gear from comiing off easily. That did make the balacer come off --real-- easy though. Anyway, a tap with the small hammer on the outer end of the key, pushing it gently into the crank and causing the rear end of the key inside the gear to roll up just slightly, that's what did it for me. Tap means just that, a tap with the small machinist's hammer, just enouit to move the key ever so slightly. Too much will drive the back of the key hard into the gear, then you have another friction to overcome.
Once I got the key bumped into position, the gear came off with just finger pressure.
Once I got the key bumped into position, the gear came off with just finger pressure.
08-27-2005, 06:06 PM
#6
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It is not always corrosion ...
Bend yourself into a pretzel - and take a micro look at the key: I have previously found either a burr on the key - that yielded to a small gunsmith type of file, or - the key is cocked off parallel axially in the keyway. For this, tap with a brass hammer or drift to 'straighten' the key ( either 'tap' too hard or with a steel hammer and you'll be in there a long time with a file repairing the key ...). It must be parallel to allow the crank gear to slide off.
Bend yourself into a pretzel - and take a micro look at the key: I have previously found either a burr on the key - that yielded to a small gunsmith type of file, or - the key is cocked off parallel axially in the keyway. For this, tap with a brass hammer or drift to 'straighten' the key ( either 'tap' too hard or with a steel hammer and you'll be in there a long time with a file repairing the key ...). It must be parallel to allow the crank gear to slide off.
08-27-2005, 06:24 PM
#7
Nordschleife Master
Have you tried a gear puller? Im reawlly not sure what things look like on the 928 engine, but on my 944 the crank gear was stuck on. Would not budge. Tried prying it off...but feared damaging the block or seals behind it. I ended up going to sears and buying a gear puller. It was $20.
