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Old 04-06-2010, 02:02 PM
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harmonic balancer help

[IM[IMG]jamespics096[/IMG] [IMG]jamespics097[/IMG] G]jamespics095[/IMG] hey guys i was just wondering if my balancer is on all the way ive used an installation tool and can not get it to go on any further if anyone could help that would be great thanks

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Old 04-06-2010, 06:01 PM
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Old 04-06-2010, 06:39 PM
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Old 04-06-2010, 08:28 PM
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harmonic balancer help

hopefully my pictures come if so i hope someone can help me anyway i have a brand new professional products harmonic balancer and im not sure if its on all the way i used a installation tool to put it on and it feels like it bottomed out but the snout of the blancer is about a 1/4 inch away from the seal on the timing cover and i cannot get it to go on anymore hopefully someone can help thanks
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Old 04-06-2010, 08:44 PM
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It doesn't look to be seated, I agree. One way to tell is to mock up the bottom pulley to see if the belts align.

I'd suggest pulling it back off and check for any burrs on the key or keyway and the inner ID of the damper snout and the crank snout, that might have caused the damper to stop seating where it did.

It a good idea to use a bit of sealer on the damper's ID to prevent oil from finding its way out past the press fit and keyway.

If the crank was from a crank position sensor-equipped engine (like a Vortec 5.7L for instance) the reluctor ring should be removed from the crank snout or the damper will bottom too soon.

The damper on the left is shown w/the reluctor.

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Old 04-06-2010, 09:11 PM
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Originally Posted by turbofirebird350
professional products
There's the problem.
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Old 04-07-2010, 02:49 AM
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The last Professional Products balancer I installed required just a bit of honeing to correct the hole size press fit.

Read the installation directions included with the balancer.

If the crank snout or key is burred, smooth with a flat file.

Measure the crankshaft snout and balancer hole diameter verifying correct press fit. Mic the crank snout up near the timing gear and mic the balancer hole on the back side of the balancer. The crank snout should have a very slight taper to it. You need the big size of the crank snout taper. If too tight take the balancer and accurate crank measurement to a auto engine machinist they will hone the hole just a bit as required.

Its something like .0015"-.002" press fit. Read the directions. Do not eliminate the press fit. But it must be within spec. The allowable press fit spec is in the included directions.

If the press fit is not within spec, do not force the balancer on.

Then when its honed correctly, heat the balancer up in a big pot of boiling hot water in the stove for 20-30 minutes. Install the balancer quickly while hot with the install tool. It will go on like butter without requiring excessive force. It's on all the way when the crank snout end is flush with the inner countersunk in the balancer hole.
Where the balancer bolt washer goes.

You need to work quickly to install the hot balancer before it cools. If it won't go on do not force it. Remove and re-heat it. Try again.

Use the wifey's kitchen oven mitts to handle the hot balancer.
If you muck them all up, buy her a new pair before she gets home.

Last edited by F-BIRD'88; 04-07-2010 at 03:07 AM.
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