Timing gear woes
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Timing gear woes
I have a 92 E-350 and the factory cam gear decided to lose 3/4 of it teeth (110K miles on it too). Is this a typical thing for Ford to use these 'plastic' cam gears? Does anyone have a pic of the proper gear puller for this job?
Thanks,
Doug
PS: I'm glad the replacement gears are all steel!
Thanks,
Doug
PS: I'm glad the replacement gears are all steel!
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From: Houston TX
Yea, thats normal. They use the nylon gears to reduce noise. My rebuilt 300 has a nylon gear. So many must use them aftermarket also.. As far as puller...Not sure. Maybe a harmonic balancer puller might work if the gear has threaded holes in it. MK
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Well I hope it's not too noisy then as the 'air tube' leak is bothersome enough. Unfortunately there are no threaded holes in the gear. I will eventually get the proper puller through a mechanic friend but in the meantime it'll just have to sit.
I'll post again once it's all done for others that may run into a similar problem.
TTYL, Doug
I'll post again once it's all done for others that may run into a similar problem.
TTYL, Doug
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I recently re-built my 300 and over the objections of the parts guy, I bought the steel gear for the cam. I don't know why those guys think the noise issue is so important. It is far bigger deal to me to make sure my teeth stay on the gear. By the way, our 300 with factory supplied steel cam gear lasted over 300,000 miles and were still in good shape. I changed them to new just for general principles.
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From: Houston TX
Normally, I would probably prefer the steel gear. The reason I didn't change mine, was the engine was already built, under warranty, and I was too lazy to mess with changing it...:/ Is the steel gear really that much noisier? I've never had the chance to compare. My old falcon 144 had a steel gear I'm sure, and I don't remember it being noisy..Well, I'm assuming it used a gear, and not a chain..MK
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From: The KeyStone State
For this method, you'll need a positive locking 3 jaw puller, can be rented at AutoZone.
This is what I did,
Cover the exposed section of the oilpan first.
Destroy the phenolic gear with force, Prying, hammer, you get the point.
You will be left with the metal sleeve from the middle of the gear.
Drill a very small hole in the collar right beside the mating diameters of the collar and the cam.
DO not cut into the cam, Start very small, then work your way up. Be wary of your depth.
You'll need to make at least 2 of these type holes.
The material removed by drilling these holes weakens the press of the collar.
Use a 3 jaw postive locking puller gripping on one of the knurled diameters on the collar.
Presto, ready for Steel.
-J-R-
This is what I did,
Cover the exposed section of the oilpan first.
Destroy the phenolic gear with force, Prying, hammer, you get the point.
You will be left with the metal sleeve from the middle of the gear.
Drill a very small hole in the collar right beside the mating diameters of the collar and the cam.
DO not cut into the cam, Start very small, then work your way up. Be wary of your depth.
You'll need to make at least 2 of these type holes.
The material removed by drilling these holes weakens the press of the collar.
Use a 3 jaw postive locking puller gripping on one of the knurled diameters on the collar.
Presto, ready for Steel.
-J-R-
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Well guys, thought I'd post the final chapter in this thread. i basically had to do what the previous guy posted but once we got down to the steel sleeve we used an air chisel to weaken it , gave it some heat with a propane torch and it could be easily pryed off from there with no damage to the camshaft at all.
After installing the new gears and setting the distributor back in we gave it a quick fire up to make sure all was OK. Even with the timing cover off, it sounded normal to me...no excessive gear noise like some people have heard stories about.
Big thanks to all that replied to my post and I hope this never happens to anyone else...if it does, I hope they are able to find this post.
TTYL, Doug
PS: the van is for sale if anyones interested.... Niagara Falls area
http://home.cogeco.ca/~rebel-base/forsale.jpg
After installing the new gears and setting the distributor back in we gave it a quick fire up to make sure all was OK. Even with the timing cover off, it sounded normal to me...no excessive gear noise like some people have heard stories about.
Big thanks to all that replied to my post and I hope this never happens to anyone else...if it does, I hope they are able to find this post.
TTYL, Doug
PS: the van is for sale if anyones interested.... Niagara Falls area
http://home.cogeco.ca/~rebel-base/forsale.jpg
Last edited by MAD MAXX; Jun 19, 2004 at 08:01 AM.
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From: Copley, OH
It would have been a lot easier to pull the gear and camshaft as aunit and pitch them both. A perfect opportunity to stick in a bigger cam. 
Of course you'd have to increase the fuel system to match.
And then you'd need a better exhaust to realize the power increase.
And then you'd need bigger gears to take full advantage of all that power.
And then...
Of course you'd have to increase the fuel system to match.
And then you'd need a better exhaust to realize the power increase.
And then you'd need bigger gears to take full advantage of all that power.
And then...
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From: The KeyStone State
Originally Posted by StrangeRanger
It would have been a lot easier to pull the gear and camshaft as aunit and pitch them both. A perfect opportunity to stick in a bigger cam.
Of course you'd have to increase the fuel system to match.
And then you'd need a better exhaust to realize the power increase.
And then you'd need bigger gears to take full advantage of all that power.
And then...
Of course you'd have to increase the fuel system to match.
And then you'd need a better exhaust to realize the power increase.
And then you'd need bigger gears to take full advantage of all that power.
And then...
-J-R-
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I think if I were to do any upgrades at all I'd go with a carbed 460 and a 5 speed. I bought the truck to haul my car around and to get parts as needed.....I hate removing the rear bench and then covering everything all up to keep it clean so I'm looking for an early 80's F-150 when I sell the van...... I do like your way of thinking though StrangeRanger
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Another samll chapter with my situation........ it seems that some very small bits of the broken cam gear made their way into the pump so myoil pressure kept taking a dive. After I opened up the old pump I could see that it was quite worn so I bought a new one and presto!! van runs even better and much quieter.
I have a theory that may help inthe future. I think that due to the oil pump being worn (155K miles) that it provided not enough oiling for the cam gear which inturn, weakened it, causing it to fall apart.I was told bya few Ford nuts that those 'plastic' gears will get very brittle if the oil is not changed as required or if cheap oil is used.
For those that have been told that the steel replacement gears are too noisy...... I can barely hear mine at all and i think the only reason i do hear it is because I was also told to expect a big change in sound.
I have a theory that may help inthe future. I think that due to the oil pump being worn (155K miles) that it provided not enough oiling for the cam gear which inturn, weakened it, causing it to fall apart.I was told bya few Ford nuts that those 'plastic' gears will get very brittle if the oil is not changed as required or if cheap oil is used.
For those that have been told that the steel replacement gears are too noisy...... I can barely hear mine at all and i think the only reason i do hear it is because I was also told to expect a big change in sound.
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