How to remove timing gears ?!?!?!?!?!?
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Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
How to remove timing gears ?!?!?!?!?!?
OK ... got the balancer off ... thermostat cover ... water pump ... timing gear cover ...
NOW >>> HELP!
I don't want to hurt anything ....
There is no room for a puller .. heck, I can barely get a screw driver behind them.
I know it says to heat the new ones to 250 deg to get them on (aluminum / steel gears) .. that should be fun later tonight.
First I need to get these off.
what do you guys do????
Crank is steel gear ... cam is fiber with an aluminum hub (I think).
Thanks .... Mike
NOW >>> HELP!
I don't want to hurt anything ....
There is no room for a puller .. heck, I can barely get a screw driver behind them.
I know it says to heat the new ones to 250 deg to get them on (aluminum / steel gears) .. that should be fun later tonight.
First I need to get these off.
what do you guys do????
Crank is steel gear ... cam is fiber with an aluminum hub (I think).
Thanks .... Mike
Thread Starter
|
Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
Hmmm ..... OK, I took off my tin foil hat ... can you hear me now?
... you mean it matters what engine
Sorry ........
!986 F150 ... 4.9 (300) six
First time I have take a straight six apart and first time with timing gears and not a chain.
I used the two holes in the crank gear (and my puller) ... got it off.
This darn cam gear is the problem .... no holes for a puller ... can't get my 2 or 3 jaw puller behind the gear .. would not pop off with a small pry bar behind it (didn't press hard as I didn't want to damage anything ....
I searched and didn't see much. One guy has a video about drilling and tapping holes in the fiber disc.
Someone else mentioned a chisel.
I am thinking cutting a slot with my dremel down through the aluminum collar. I would do it above the key (minimum cut and no chance of damaging the cam).
Any suggestions would be great.
thanks .... Mike
... you mean it matters what engine
Sorry ........
!986 F150 ... 4.9 (300) six
First time I have take a straight six apart and first time with timing gears and not a chain.
I used the two holes in the crank gear (and my puller) ... got it off.
This darn cam gear is the problem .... no holes for a puller ... can't get my 2 or 3 jaw puller behind the gear .. would not pop off with a small pry bar behind it (didn't press hard as I didn't want to damage anything ....
I searched and didn't see much. One guy has a video about drilling and tapping holes in the fiber disc.
Someone else mentioned a chisel.
I am thinking cutting a slot with my dremel down through the aluminum collar. I would do it above the key (minimum cut and no chance of damaging the cam).
Any suggestions would be great.
thanks .... Mike
Senior User
Joined: Jul 2007
Posts: 196
Likes: 2
From: Middle Tennessee
Senior User
Joined: Jul 2007
Posts: 196
Likes: 2
From: Middle Tennessee
Senior User
Joined: Jul 2007
Posts: 196
Likes: 2
From: Middle Tennessee
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
Thanks ....
I tried my puller ... claw was too big to get behind the gear through the hole.
Got it off ... the hard way.
I cut a groove right from the top of the gear to the aluminum hub ... cut the aluminum hub through with my dremel right on top of the key so I would not hurt the cam.
Popped right off after that.
Didn't have to pry on the retainer (didn't want to do any harm).
I hope putting on the new aluminum gear will be a bit easier.
Thanks ....
I tried my puller ... claw was too big to get behind the gear through the hole.
Got it off ... the hard way.
I cut a groove right from the top of the gear to the aluminum hub ... cut the aluminum hub through with my dremel right on top of the key so I would not hurt the cam.
Popped right off after that.
Didn't have to pry on the retainer (didn't want to do any harm).
I hope putting on the new aluminum gear will be a bit easier.
Thanks ....
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Thread Starter
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Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
Thanks for the install link!!!!!!!!!!!!
I have been thinking about how to heat the gears.
The paper that came with them said to put them in 250 deg oil.
I am working outside in the cold .... I need to figure out how to get the hot gear from the house to the driveway (about 100 ft) ... should be fun.
Thanks again ..... Mike
I have been thinking about how to heat the gears.
The paper that came with them said to put them in 250 deg oil.
I am working outside in the cold .... I need to figure out how to get the hot gear from the house to the driveway (about 100 ft) ... should be fun.
Thanks again ..... Mike
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Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Some fine crocus cloth or a green scotch pad over everything to remove any burrs wouldn't hurt, maybe even a quick dingle ball honing of the new gear bore. If heat is wanted I'd just use a propane torch and heat it up evenly. Wear gloves, natch.
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 390
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Thanks guys ...
Worked till after midnight in freezing rain ... got it all apart.
Snow this after noon but sun tomorrow.
I will clean everything up today and take a shot at it tomorrow.
I do have a 12 gauge power cord to the truck (since it is 100 ft from the nearest plug). I am wondering if a toaster oven will work on that long of a cord ... may give it a try ... have an old one here.
So, one more question ....
Since the cam is still in the engine ... cam gear first then the crank gear? I am thinking I will need to turn each a bit ... I have no easy way of turning the crank but if I get the cam gear on first, I can turn it to mach the crack gear as I put it on.
Any thoughts?
Thanks!
Worked till after midnight in freezing rain ... got it all apart.
Snow this after noon but sun tomorrow.
I will clean everything up today and take a shot at it tomorrow.
I do have a 12 gauge power cord to the truck (since it is 100 ft from the nearest plug). I am wondering if a toaster oven will work on that long of a cord ... may give it a try ... have an old one here.
So, one more question ....
Since the cam is still in the engine ... cam gear first then the crank gear? I am thinking I will need to turn each a bit ... I have no easy way of turning the crank but if I get the cam gear on first, I can turn it to mach the crack gear as I put it on.
Any thoughts?
Thanks!
Lead Driver
Joined: Nov 2013
Posts: 7,173
Likes: 1,173
Have everything else ready to go on the truck and use the old toaster oven out in the garage. When the gear is hot enough, unplug the toaster oven and carefully carry it out to the truck. The gear will stay plenty hot for that brief walk. If concerned it will cool off, just set the temperature a little higher.
You can also cool the shaft ahead of time for a little extra clearance during assembly. Put some ice cubes in a sealed plastic bag and drape it over the end of the camshaft.
To help pull the gear into place, don't use the bolt. Instead, use a short piece of threaded rod and a nut. That way, you can thread the rod all the way in to catch as many female threads as possible. Then use a nut to draw the gear fully into place. By doing this, there are no concerns about galling because there's no relative motion on the female threads (inside the camshaft) as you're reefing down. Any relative motion is between the threaded rod and nut, which are then removed after the gear is fully seated. Then install the bolt as normal.
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
Thanks for the advice ...
Don't have to worry about the ice ... as I said, I am working outside in the snow and rain ... "might" get up into the low 30's ... stupid weather to be working on a truck
My wife says it is "incentive" to build my workshop next summer. I have a 3500 sq ft pad poured but worked (the stuff that pays the bills) kept me too busy this summer to work on it.
Thanks again ... Mike
Don't have to worry about the ice ... as I said, I am working outside in the snow and rain ... "might" get up into the low 30's ... stupid weather to be working on a truck
My wife says it is "incentive" to build my workshop next summer. I have a 3500 sq ft pad poured but worked (the stuff that pays the bills) kept me too busy this summer to work on it.
Thanks again ... Mike
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 390
Likes: 5
Hey!
I was about to put on my new gears when I noticed there is no "puller" holes in my new gears ... not even in the steel one for the crank.
Can I just drill and tap two in the gear?
I would hate to put in on and have no way of taking it off in the future.
thanks ... Mike
I was about to put on my new gears when I noticed there is no "puller" holes in my new gears ... not even in the steel one for the crank.
Can I just drill and tap two in the gear?
I would hate to put in on and have no way of taking it off in the future.
thanks ... Mike
Lead Driver
Joined: Nov 2013
Posts: 7,173
Likes: 1,173
If the material is thick enough, you should be okay to drill/tap, but I'd still like to see some pics.