Front Seal Harmonic Damper Question

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Idaho Chris
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Front Seal Harmonic Damper Question

Post by Idaho Chris »

I'm in the process of fixing an oil leak in the front of my 300 I6. Here are a couple of photos:

Trashed seal:

Image

Harmonic damper surface:

Image

As you can see there are wear ridges on the damper. Strangely the main wear ridge is proud on the surface, not recessed. The wear appears to be outboard of (outside of) the seal wear surface. Is this normal? If not, is it fixable? Would using the Felpro gasket kit with a sleeve work? Any advice is appreciated. Thanks.
-Chris
1969 F250 4x4 4spd 300 I6
1973 Mustang Mach 1 351C
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Idaho Chris
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Re: Front Seal Harmonic Damper Question

Post by Idaho Chris »

OK, after closer inspection with a magnifying glass it looks like what I am seeing is a sleeve pressed on from a PO. Perhaps just a new sleeve will solve my problem. How does one remove a sleeve????
-Chris
1969 F250 4x4 4spd 300 I6
1973 Mustang Mach 1 351C
GPatrick
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Re: Front Seal Harmonic Damper Question

Post by GPatrick »

A SPEEDI-SLEEVE can be removed by applying heat to the sleeve with an electric heat blower, which will expand it
enough to let it slide off the shaft without causing damage.
Alternatively, the sleeve can be removed in any of the following ways, always using care not to damage the
shaft surface
- by relieving the press fit tension using a small hammer to peen across the full width of the sleeve
- by using a cold chisel to cut through the sleeve
- by using a pair of wire cutters starting at or near the flange and applying a twisting motion.

Or a link to the full instructions -

http://www.skf.com/binary/30-283852/TT08_021.pdf
Gary
Littleton, CO
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Idaho Chris
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Re: Front Seal Harmonic Damper Question

Post by Idaho Chris »

GPatrick wrote:A SPEEDI-SLEEVE can be removed by applying heat to the sleeve with an electric heat blower, which will expand it
enough to let it slide off the shaft without causing damage.
Alternatively, the sleeve can be removed in any of the following ways, always using care not to damage the
shaft surface
- by relieving the press fit tension using a small hammer to peen across the full width of the sleeve
- by using a cold chisel to cut through the sleeve
- by using a pair of wire cutters starting at or near the flange and applying a twisting motion.

Or a link to the full instructions -

http://www.skf.com/binary/30-283852/TT08_021.pdf
Gary-

Thank you very much for the quick and informative reply. I took a heat gun to the old sleeve and it worked right off with a bit of help with a pair of pliers. There appeared to be no Loctite or other adhesive under the sleeve. Presently the damper is chilling in the freezer. I am planning to heat the new sleeve with my heat gun and press it on with the Loctite that Fel-pro provided with the seal.

Thanks again!
-Chris
1969 F250 4x4 4spd 300 I6
1973 Mustang Mach 1 351C
GPatrick
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Re: Front Seal Harmonic Damper Question

Post by GPatrick »

Don't heat the sleeve - it will distort and never conform to the shaft correctly. Cooling the shaft is OK, though. Check the chamfer on the end of the shaft to make sure there are no burrs and just use the tool/cup to tap it into position.
Gary
Littleton, CO
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