Timing gear replacement
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Mountain Pass
Joined: Apr 2012
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Timing gear replacement
Hi, I am replacing the timing gears on my 1986 E150 4.9L engine. The camshaft gear is made of a plastic composite and several teeth broke. The smaller crankshaft gear is steel but there are no threaded holes to pull it and no clearance behind it to grab it with a puller. Is it necessary to replace the steel gear? The motor has been rebuilt, new timing gears were installed and only has 38,0000 miles.
Thanks
Thanks
Super Moderator
Joined: Apr 2004
Posts: 34,475
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Unless you put another plastic gear on there, replace both with the "matched set" concept in mind.
Pulling the gear may require some extra steps, or a thinner piece of metal behind it that the puller will grab.
Pulling the gear may require some extra steps, or a thinner piece of metal behind it that the puller will grab.
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Mountain Pass
Joined: Apr 2012
Posts: 160
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I didn't want to replace it with the plastic gear but if I can't get it off I'll have to. There is almost no clearance behind the gear.
Is there anything I need to worry about before I take the gears off, like align the timing marks?
Is there anything I need to worry about before I take the gears off, like align the timing marks?
More Turbo
Joined: Aug 2017
Posts: 507
Likes: 69
From: Tucson
The Haynes manual says to check camshaft endplay before removing gears. Also not to turn cam or crank when gears are off. Unless this is an emergency repair, you really should try to get a service manual to guide you thru this. Also, this motor has been around forever so if you did a Google search you will find all kinds of references to this problem along with suggested ways to get it off:
https://www.google.com/search?q=4.9+...client=gws-wiz
https://www.google.com/search?q=4.9+...client=gws-wiz
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meck1
Ford Inline Six, 200, 250, 4.9L / 300
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Mar 14, 2006 01:48 AM
