Front end lowering problem

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Apr 4, 2011 | 08:58 PM

VetteC5Z51

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Instructor

Joined: May 2009

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From: Deptford NJ

Front end lowering problem

Hello all, I'm having trouble performing the standard C5 lowering procedure. I've found the threads on how to turn the stock bolts counter-clockwise and all but the trouble I'm having is that the bolts will not turn at all. I've tried shooting the area around the spring with PB and this bolt still will not turn (yes I am going counter-clockwise). It seems as though it's frozen. Any tips on how to get it loose? Thanks a lot.

Joe

2002 Z51 manual

Apr 4, 2011 | 09:19 PM

buckg2

Instructor

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From: bellefonte pa

did you take the weight off of the leaf spring? let the PB sit over night.

Apr 4, 2011 | 09:36 PM

VetteC5Z51

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From: Deptford NJ

Yes, I took the weight off of the spring. I let the PB set for about 30 min, although it's still on there. Are these bolts generally difficult to turn?

Apr 5, 2011 | 09:38 AM

c5vetteguy

Melting Slicks

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From: SW Nuh Hampsha

2018 C5 of Year Finalist

Quote:

Originally Posted by VetteC5Z51

... Are these bolts generally difficult to turn?

Yes, if they've been untouched for 10 years, not unlike any other bolt. If, after a couple of days of being saturated with PB, they still don't turn, try applying some heat to the bolt.

Apr 5, 2011 | 11:06 AM

hotwheels57

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From: Not on either liberal coast.

Allow the penetrating fluid to remain at least overnight. Be patient and allow it to do its job. Fill the little trough on top of the spring that surrounds the adjustment bolt with the fluid. When you see that it's depleted and seeping down below the spring, it should be lubricated enough to adjust. Mine were capable of being turned without a wrench.

Another problem may be that the rubber bushing has vulcanized to the control arm. Use more PB BLASTER with a metal putty to loosen it.

Some people have unfortunately discovered their adjustment bolts are rusted solid within the spring insert. If you attempt to force it you may break the inserts bond with the composite spring. If you chose to use heat as suggested, be very careful. If all this fails, maybe it's time for a new spring...

http://forums.corvetteforum.com/c5-p...nt-spring.html

Last edited by hotwheels57; Apr 5, 2011 at 11:13 AM.

Apr 5, 2011 | 11:48 AM

VetteC5Z51

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Instructor

Joined: May 2009

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From: Deptford NJ

Thanks everyone for the advice. I'll use the PB in the locations suggested and give it time to set. If I still have problems it's time for new springs ... Excellent excuse for a set of T1s lol. Thanks again.

Aug 3, 2011 | 07:31 PM

SVTBAIT

Burning Brakes

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From: Rack City

2015 C5 of Year Finalist

I'm having the same issue. How did this turn out for you?

Aug 3, 2011 | 07:35 PM

csexton

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Joined: Jul 2004

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From: Danville Virginia

[QUOTE=hotwheels57;1577260634]

Another problem may be that the rubber bushing has vulcanized to the control arm. Use more PB BLASTER with a metal putty to loosen it.

This is what worked for me. Push that putty blade under the bushing.

Chuck