timing gear replacement
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timing gear replacement
I believe the timing gears went on my 1970, F-100, 240 6 cly, this past weekend. I can get a set for about $68. I have done many repairs on my engine, and replaced many parts and am pretty good mechanically, but have never done any internal engine work. I'm wondering how big a job it would be and about how long it would take to replace these gears. Any advice would be appreciated. TIA
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Joined: Feb 2004
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Timing gears just going sounds kinda catastrophic,make real shure that it isn't something simple before ripping into your engine blind,i'm not real familiar with that particular eng. but it should prob. take you an afternoon to do it. have a gear puller, gaskets. and probably coolant. its helpful to line up the timing marks on the gears BEFORE removing them, and just put every thing back together the way you took it apart. good luck
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Thanks for the reply. I was travelling down 95 at aobut 60, heard some "klinking" in the engine and then the engine just died. Got towed home. Tow truck drives said it sounded like timing chain to him. When I crank the engine, which it does do, it turns very freely, wont start at all, sounds like no dist. or spark, then when I look at the rotor, it doesn't turn at all when the engine does. Just figured it must be the timing gears, since I found out this engine doesn't have a timing chain. If you have any other ideas or things to check, would love to hear form you. Thanks.
Elder User
Joined: Nov 2003
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From: Kalispell, MT
ahhh, nylon gears...lol...ford's way of getting more money out of the poor working-class man...thank you ford, i'll stick with steel gears, if you don't mind....at napa, the steel gears are like another 10 bucks or something for the 300-6...gotta love that gear driven engine...much more stable and solid...
MontanaFord
MontanaFord
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Joined: Nov 2000
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From: Azle, TX
Don't know if you ever got yours fixed or not, let me know! I'm having a problem getting that gear off too. I have a new Comp Cam and new timing gears, but I need the key and thrust plate off the old cam, trying to figure out how to get the gear off.
Elder User
Joined: Sep 2003
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There is a pin that holds the distributor gear to the distributor shaft. The pin is pushed thru the gear and shaft. You might check this first - it would save you a lot of trouble if it's just the pin.
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Elder User
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From: Kansas City, Missouri
I agree, stay away from nylon gears, its not worth getting cheap on. You may also want to look in a repair manual or look on-line so that you get the proper technique for aligning the gears and torque specs. when you put it back together. 
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From: Reno usa
Pull the valve cover and crank it over - if the rockers rock its the dist. The timing gear on the cam should be pressed on at a shop. Tryin to do it a home will probably break stuff you dont want borke and might push the freeze plug outta the back of the block - not good.
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From: Glen Burnie Maryland
Cam gear DOESN'T need a shop to pull or install. Install is really easy. Large bolt and a socket that the bolt will fit thru. Tighten down on the bolt till it engages the socket on the gear. It will pull the gear down to stop on the cam itself.
As far as getting the gear off, if it's a nylon gear, the main part of the gear itself is aluminum. Pack CLEAN RAGS into the oil return hole below the crank (at the oil pan. Take a hacksaw blade and cut a notch across the top of the gear (across the main center hole). Take this notch all the way thru the gear to the cam itself. NOW VERY CAREFULLY, using a small flat chisel and a ball peen hammer, chisel down the sides of the gear from the notch almost to the bottom. The chisel will also spread the notch at the same time. Once both sides are chiseled down the finish on one side chiseling down to the bottom and thru the gear. The gear should them just come right off in your hands.
If the gear is steel the use a gear puller and some HEAT!
Larry
As far as getting the gear off, if it's a nylon gear, the main part of the gear itself is aluminum. Pack CLEAN RAGS into the oil return hole below the crank (at the oil pan. Take a hacksaw blade and cut a notch across the top of the gear (across the main center hole). Take this notch all the way thru the gear to the cam itself. NOW VERY CAREFULLY, using a small flat chisel and a ball peen hammer, chisel down the sides of the gear from the notch almost to the bottom. The chisel will also spread the notch at the same time. Once both sides are chiseled down the finish on one side chiseling down to the bottom and thru the gear. The gear should them just come right off in your hands.
If the gear is steel the use a gear puller and some HEAT!
Larry
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Joined: Sep 2003
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From: near reno
with a gear puller and heat, you can expect that cam gear to come apart in a few more peices. For installation, make sure and use a hot plate, to heat the gear evenly,aprox.170 degrees, and it will slip right on evenly.
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Pulling the steel cam gears I've had best luck using a simple "T" style puller. The only drawback is that the gear will need a couple of holes drilled and tapped into its "spokes" to use a "T" style puller. Don't get any chips into the oil pan.
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