Frigidare front load washer has loud banging on spin cycle. After much work we reallized one shock was broken of which we repaced both now it still making the loud banging shaking motion. Also the washer is level.

All front-load washing machines have shock absorbers that are used to dampen the tub movement in the spin cycle. The shock absorbers or struts are attached to the base frame and to the outer tub and you will need to remove the front panel or the rear panel to access them. When shock absorbers weaken or become damaged, the machine will often make a loud banging sound during the spin cycle and if the symptom is not corrected, can lead to damage of other components. Inspect the shocks for signs of broken attachments, leaked fluids or a weakened dampening action and replace both shocks if worn. Remove power from the appliance before attempting this repair.

Some models of top-load washers use tub dampening straps to cushion the movement of the tub during the spin cycle. There are four straps attached to the top of the tub and to each corner of the cabinet

Also There are four suspension rods that suspend the tub and allow the tub to free float. If the suspension rods are noisy, there will be a squeaking noise during wash. You can fix this by putting bearing (lithium base) grease in the cup that each rod rests in. If it continues to squeal replace all four rods the cups come with the rods, replace them as well.

If your washer has a loud banging noise during spin the balance weight may be loose. This weight is to counter act the weight of the motor so you will find the weight directly behind the motor. Sometimes simply tightening the bolts will fix your issue but if the bolts are stripped out get some bolts slightly longer than the original bolt to allow you to put a locking nut on the bottom side of the mounting plate. If the weight is broken replace it.

Lastly Washer vibration can be caused by a broken counter balance spring. Ur washer may be equipped with one or more counter balance springs which help to absorb the natural movement of the spinning tub. If a counter balance spring fails the tub might lean in one direction more than another and it will shake and cause vibration.
By the way my advice is free cuz God is good!

All front-load washing machines have shock absorbers that are used to dampen the tub movement in the spin cycle. The shock absorbers or struts are attached to the base frame and to the outer tub and you will need to remove the front panel or the rear panel to access them. When shock absorbers weaken or become damaged, the machine will often make a loud banging sound during the spin cycle and if the symptom is not corrected, can lead to damage of other components. Inspect the shocks for signs of broken attachments, leaked fluids or a weakened dampening action and replace both shocks if worn. Remove power from the appliance before attempting this repair.

either the shocks have worn out or a spring has broken

Hello gen0313 - From what you are describing it sounds like the unit could possibly have a broken shock/bearing or damaged tub. A certified technician will need to accurately diagnosis the bearing and pulling system behind the drum for repairs.

The bearings on the drum may be going bad or the counter weight may be broken off or missing or heavy unbalanced loads. Reach inside and try lifting up on the interior drum. If it moves up and down or you feel any popping I would say the bearings are going bad. They usually make a lot more noise on the spin cycle also. Similar to an airplane taking off.
Hope this helps.

bad news,mostlikely it's the spider gear and that means new washer time.using to much soap does this.it eats at the rear bearing and actually breaks it off and that's the sound you're hearing the basket has no rear bearing to ride on any more.you can first check to see if the shocks are broken,but most of the time the shocks break because the rear bearing is gone but check that first,i've found some with just a broken shock from overloading the washer.good luck and sorry to give you the bad news,the spider gear costs around 450 to 500 hundred bucks

please check the shock obsorbers and replace them if they are not holding the drum.

There are 2 shock absorbers/springs attached to the drum. If one of them breaks it will cause a loud banging noise when you wash heavy loads. This is an easy fix. The part is about $22.00 and it is accessed throught the front bottom panel.

Unless your front loader is set firmly on concrete and leveled to perfection, the force of a heavy wash load spinning in excess of 1000rpm will create a bit of vibration and noise.A firm footing is your best defense against to much movement.
Also due to the earlier movements during the spin cycle, the shocks that are used to dampen the spin cycle might have been broken or damaged.
If the problem persists inspite of proper levelling, please do check for the shocks or might have them replaced them for good.

Here's what the problem is. 
http://www.youtube.com/watch?v=UwpKP_9_fAA&feature=player_embedded

It's been designed to fail so that you buy an expensive part.