Speed queen heavy duty AWM592W washer is making a squeal only at the start of the wash cycle...no noises through rest of cycle. Need too be concerned? What might be causing this?

SOURCE: washer make a grinding noise in the spin cycle; barrel does not spin in spin cycle

check the transmission out or it can be a clutch problem

SOURCE: Speed Queen Top Loader heavy duty washer

First unplug the machine, now take off the front panel, two screws at the bottom of the front panel, front panel swings up and off.

check to make sure the six springs are still in place.

Under the tub is bearing housing between the tub and base usually white in color, under this is a plastic ring, does it seem to float easily when you move the tub. it could be broken. Also look around for loose or missing screws.

If all seems fine, make sure you have all four rubber feet on, level machine, in the front first side to side, then pull machine toward you to bring rear legs off floor, these are self leveling, have someone assist and make sure they are not stuck, use a pliers and break loose if they are. So with the machine on its front feet and the back feet off the ground set the machine down on all four feet check level front to back adjust as needed on the front legs. You should reset rear legs as you adjust the front. now with machine level tight the nut between the front legs and the base locking them.

This should help, if machine still shakes it could be the balance ring, has lost if solution its filled with a salt water solution, the hard part is you need to find it under the tub cover. we will go into the detail if we need to. ask more questions later

SOURCE: Amana Heavy Duty Extra Large

my heavy duty 7 speed motor cut off because of over heating and the belt was changed can you suggest a suitable model of fan belt for it. ?

SOURCE: won't spin or agitate

coupling.between motor and gearcase.

SOURCE: Whirlpool Ultimate Care Heavy Duty Washer will not spin

It sounds like you have a broken motor coupling. This is a very inexpensive and simple repair.

If the washer will fill and drain, but won't agitate or spin, you may have a broken motor coupling. The noise of the motor engaging, lack of agitation and ability to still drain are the usual symptoms. This is a common fail item with this model washer through normal wear and tear. Newer versions of the coupler are more resilient and resist breaking. The following link explains how to replace one:

http://www.fixya.com/support/r385252-replacing_motor_coupling_whirlpool_top
The motor coupling is located between the drive motor and the transmission and takes the place of a drive belt. They do wear out and can break. The replacement part number is included in the link I provided and is an improved upgraded coupling that is more resilient. It should last longer. If you have questions, or require additional assistance, please let me know. I hope this helps you.

A replacement coupler can be purchased on line at appliancepartspros.com for about $11. Just use the part number in the link and "Search by Part Number" for your search criteria.