I have a Thunderbird ARM02 mixer that is "skipping" when mixing. Is there a way to adjust the gear mesh on a Thunderbird ARM02 mixer?

If you are referring to the transmission, I believe it's a sealed unit.

3-Speed gear box

Transmission: Wide-faced, hardened alloy steel, helical gears fully sealed in transmission lubricant with heavy-duty ball bearings and clutch combine for highly dependable, quiet operation.

slacken the big acorn nut away from the bottom of the planetary and then tighten the lock nut to the acorn nut. When adjusted and secured, the planetary should have a little vertical play, maybe 1/16".
That will stop the second gear driving from friction from being too tight.

This will be caused by a stripped gear. However there are several gears that may have stripped and you will need to take the mixer apart and inspect the gears.
I would need the model number of your mixer to determine what parts you would need.
Thank you,
Colleen
MendingShed.com
800-339-9297

Sounds like the keys in the shifting sleeve may be sheared. The transmission will have to be disassembled and checked for broken parts. Check www.hobartservice.com for your local Hobart office.

You have broken the intermediate gear in the head. This gear can be a bit of a problem to change. Here is the parts manual for the KSM150PS.
The part is probably #6, worm gear.
Check with Kitchenaid on where to buy parts.

Several things:

The Professional 600 has a metal gear housing with a metal gearing. Because of this, the Professional 600 will generally run louder than other stand mixers that may have a nylon/metal mesh gearing.

How long is the bread dough being mixed for? Kitchenaid stand mixers must be used on speed 2 for bread doughs, using the spiral shaped dough hook, and mixing for no longer than 7 minutes.

If the flat beater is getting caught on the bottom of the bowl, pleasure assure the bowl is being seated correctly. You will place the bowl on the mixer arms on the left and right hand side. You will also want to take your fingers along the back of the bowl, where it butts up against the base of the mixer, and press downward. You will hear an audible click as the bowl falls into a spring latch and allows the bowl to sit flush and secure. If this is not being done, the flat beater may strike the bottom of the bowl.

If this was not the cause of the problem, please consult your Use and Care Guide about the beater to bowl adjustment. This is an easy adjustment made with a flat head screwdriver that can quickly correct the problem of a flat beater hitting the bottom of the bowl.

this is caused by having broken teeth in the gear box.

The "wobbling" sounds like an issue of beater to bowl adjustment, which can come out of alignment naturally over time and with use of the machine.

If the flat beater is striking the bottom of your bowl, this may cause the locking mechanism to loosen and may cause the mixing head to "bounce" during use.

Your Use and Care Guide will cover the "beater to bowl adjustment," which you can do at home in a few minutes with a flathead screwdriver.

Also, leaking of oil in a stand mixer is not necessarily indicative of a large problem.

Kitchenaid stand mixers are overpacked with oil to last the lifetime of the motor. If the motor sits idle for some time (is not used), the oil may begin to drip from the gears and settle. Oil leakage may primarily be seen from around the beater shaft or planetary action.

A stand mixer can lose up to a 1/4 cup of oil before it needs to be serviced.

It is recommended to run the mixer on speed 10 for 2 minutes in order to redistribute oil back into the motor. In order to prevent future occurences, this is recommended to be done every 3 weeks if mixer is not being used.

Hi, The KitchenAid mixers are usually quite easy to work on if you are competent at DIY. It sounds like a gearbox fault. Gearbox parts are easy obtained for most of the models and are easy to repair.

This is a service manual for a lot of the KitchenAid mixers. Might give you an idea on how difficult it is to work on before taking the plunge.

Hope this helps

Thats called a sacraficial gear because its brass which is a soft metal.This gear takes most of the strain but i think either a spacer is missing or the gears arent meshing correctly.The transmission assembly the shaft next to it make sure all the spacers/washers are there.Goto hobartcorp.com you will find an exploded parts breakdown.