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Here is my problem, I was going to start this project on the weekend but I have some other things to take care of. I am replacing a water pump, crank seal, harmonic balancer and belt. well everthing started out ok until I got to the water pump. one of the bolts that hold it to the block has the bolt head broken off. There is only about a 1/4 in sticking out. The bolt goes thru the other side of the ear but there is not a lot sticking out. I first used PB Blaster, then vice grips, i dont
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You could use some oil on the seal but +1 with BigC. If the crankshaft itself is ‘marked’, it will just tear through the new seal.
Nice work on getting the bolt out, in fact I would have suggested the angle drill as I’ve had to do that myself a time or 2, you never stop buying tools in this business. As for the oil seal leakage something that I didn’t see mentioned yet is that the crank may be ‘wobbling’ and not allowing the seal to do it’s job. I don’t see this often but if it somehow got bent along the way it’s possible it can cause this problem. After you get it all back together look to see if the balancer pulley is bouncing around if it is then this might be the case.
Eric, thanks for the advice. Yes when watching the balancer running at idle there does seem to be a bit of a wobble to it. I am not sure how excessive the wobble should be before it chews up the seal. If the crankshaft itself is bent does that mean the car may be toast? Could it be the bearings and how can I check this? I spoke to a local parts guy and he mentioned that I should try a “National” brand for another replacement seal. He said the SKF seal I had was “cheaper” . i checked online and there is may be something called a microsleeve from Silverseal.com. I was going to give them a call and see if they have a seal that fits tighter. Thanks.
Driveway Al
If you have access to a OEM replacement seal or one better, you could also try that route first.
Are you sure the harmonic balancer is fully seated and torqued down to specs?
Yes, it is fully seated, but you make a good point, I did not torque it down because it is difficult to hold pulley while torurqe wrench is on bolt. I just hit it good with a 1/2 inch impact. Thanks.
Driveway AlWell hopefully it is not over torqued now causing damage. 1 or 2 seconds of the impact should have been enough, however im a stickler for using torque specs.
Did you notice the ‘wobble’ on the balancer before you removed it?
Yes, there was a definite wobble before taking off what was left of the old balancer. When you mentioned causing damage would that be to the seal or crankshaft? Next one I install will definatly be torque to spec.
Driveway Al
You could check the end of the crankshaft for run-out but you would need a good dial indicator gauge if you suspect a damaged crankshaft.
How did the key way look on the crankshaft? Did that seat good with the new balancer?
And its never a good idea to over tighten bolts period. If that wobble was there prior, i dont think you have any concerns about over torqued the crankshaft pulley bolt.
Did you try to run the vehicle for a few seconds without the drive belt to see if that balancer wobble is still present?
Thanks for keeping us updated! Dont forget to change the traffic light to green if the issue is resolved C8-)
Well every one, I cant thank you guys enough for pointing me in the right direction. Turns out, last night I took the H. balancer off and pulled off the seal that I put on. The spring was slightly popped off the inside. not sure if this was a result from prying it out or if thats what happenend when I put it on. I inspected the end of the crankshaft and I could’nt find any marks. I then installed another seal, this one being a Timkin. When I was at the store buying the seal I opened up the Haynes book and was shocked at the torque spec. for the crank bolt. It was only 40lbs. “yikes”, I must of rammed the crank balancer on at 150lbs with the gun. I installed the pulley at the right torque, light grease on the inner outer surface of the seal and guess what, no leaks. I figure it was me having the ” touch of the gorilla”. I learned a good lesson here in that tighter is not necessarily better with these bolts. It does not take much for them to leak. There was no key way on the shaft, just a press fit. Thanks. Now I have to get the heat going in my 99 F150.
Driveway Al
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