Hey, guys,
I have my '84 at my mechanic's house right now for a main seal and timing belt job, and we've tried just about everything to get the lower timing crankshaft sprocket off. He was almost unable to get the front crank pulley off as it was. He soaked it in penetrating oil, applied heat with a torch, tried everything he could to pry it out. It moves out about an eighth of an inch and won't go any further. There are no holes or threads to attach a puller so that's out. I searched the forums and and the only thing I found was to apply heat to it. My mechanic also doesn't want to cook the oil pump gaskets in the process of getting it off. He's already chipped the back of the sprocket trying to pry it out so we're probably going to have to replace it anyway. Any suggestions on this would be greatly appreciated.
Thanks, Rob
Lower timing belt pulley stuck
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RiggerRob
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Re: Lower timing belt pulley stuck
UPDATE:
Well, he finally got it off. He had to rock the Woodruff key back and forth and then yank it out with vise grips (which, of course, destroyed it). Then he got a chisel in the side of the pulley and rotated it a quarter inch at a time by pounding the crap out of it and gradually forcing it off the shaft. He had to do this all the way out to the end of the shaft - it was literally rusted on. He said that in 11 years of mechanical work he'd never seen one frozen on this bad. We've got a new sprocket coming in on Monday. We were lucky to get it off without messing up the oil pump. Have any of you guys ever seen one this bad? I'm wondering if it had ever been off the car before. Not knowing the history of the car, it's hard to know how much salt, sand or other corrosive stuff it had been exposed to. I'll be without a car for a day or 2 more but at least it'll have a fresh timing belt and it won't be gushing oil out the front any more...
Well, he finally got it off. He had to rock the Woodruff key back and forth and then yank it out with vise grips (which, of course, destroyed it). Then he got a chisel in the side of the pulley and rotated it a quarter inch at a time by pounding the crap out of it and gradually forcing it off the shaft. He had to do this all the way out to the end of the shaft - it was literally rusted on. He said that in 11 years of mechanical work he'd never seen one frozen on this bad. We've got a new sprocket coming in on Monday. We were lucky to get it off without messing up the oil pump. Have any of you guys ever seen one this bad? I'm wondering if it had ever been off the car before. Not knowing the history of the car, it's hard to know how much salt, sand or other corrosive stuff it had been exposed to. I'll be without a car for a day or 2 more but at least it'll have a fresh timing belt and it won't be gushing oil out the front any more...
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SynthDesign
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Re: Lower timing belt pulley stuck
Well that sucks. Hopefully you'll be back on the road soon. Another option not mentioned is freezing the crank using dry ice and then heating the pulley, but I'm pretty sure you're mechanic tried everything else and came up with his best result.
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danzo
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Re: Lower timing belt pulley stuck
Glad to hear you were able to get 'er done. I just went through this a few weeks ago when I replaced my 25 year front main seal. The crank t-belt pulley had obviously never been off. The accessory belt pulley was stuck also, but there's a tool that works great - a pulley puller made for a Chrysler. Most autoparts hauses rent/loan them.
As for the timing gear - I did the same vise grip action on the woodruff key (Toy dealer has new ones for $3). The timing gear itself will come off if you twist it, again using vise grips. I put an Official Red Shop Rag on it and was able to work it off without needing to replace the gear.
As for the timing gear - I did the same vise grip action on the woodruff key (Toy dealer has new ones for $3). The timing gear itself will come off if you twist it, again using vise grips. I put an Official Red Shop Rag on it and was able to work it off without needing to replace the gear.
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RiggerRob
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Re: Lower timing belt pulley stuck
He had a pretty rough time getting the accessory belt pulley off, as well, but the timing belt sprocket kicked his butt good. Now, apparently, the parts store guy spaced out and forgot to order the part and it won't be in 'til tomorrow, so day 2 without my Terc 
...
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toughtercel
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Re: Lower timing belt pulley stuck
I 'm not sure if you did remove the FRONT BUMPER which it easier to have air impack gun/extension direct straight into crankshaft sprocket without any angle.
The other problem is choose the right "ANTI LOCK " stuff , Blue and Red type , one of them is permanently lock in, I had a custumer need timing belt replacement and it end up 0ver 600 lbs of torque of force to loose the nut , no luck,then 8 feet long bar pipe,racket, still nothing but twist the whole motor side way .
The other problem is choose the right "ANTI LOCK " stuff , Blue and Red type , one of them is permanently lock in, I had a custumer need timing belt replacement and it end up 0ver 600 lbs of torque of force to loose the nut , no luck,then 8 feet long bar pipe,racket, still nothing but twist the whole motor side way .
Re: Lower timing belt pulley stuck
First time I did my timing belt...it was 20F outside and windy. Ended up using a big screwdriver and even a cold chisel wedged between the oil pump and the sprocket...I was desperate. Didn't seem to bother the oil pump any and I put a good layer of moly grease on the crank and inside the pulley. Don't really recommend it though.
Have heard of people drilling and tapping 2 holes in these on another car though...to use a puller.
Have heard of people drilling and tapping 2 holes in these on another car though...to use a puller.
Give a boy a gun-give a biatch a cell phone-and pretty soon you almost got yourself a police state.
Orwell said: War is peace! Freedom is slavery. Ignorance is strength...
Orwell said: War is peace! Freedom is slavery. Ignorance is strength...
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RiggerRob
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Re: Lower timing belt pulley stuck
Our biggest concern was burning up the gaskets on the oil pump by using the torch, or destroying the face of the oil pump by using chisels or other wedging devices. Wasn't much left of the pulley once he got it off. Good news is that we replaced both the upper and lower timing belt pulley seals and I'm back on the road with nary a drop of leaking oil! Off to Summertown, TN tomorrow...