Gleason Avery CW motor modification for CCW use

[NEStoveOwner]

Some know of the reliability concerns i have previously raised regarding the Merkle motors and the testing i have done on the Gleason Avery. For those that dont, the thread is here:

https://www.hearth.com/talk/threads/englander-auger-motor-failure-and-replacement.30454/

Recently i tried to order a GA motor in CCW form as i had done previously. The GA rep told me that as a result of an arrangement with Englander they could not sell me a CCW motor and i would have to buy one directly from Englander. I hung up and several days later order a GA CW motor anyway.

I did give Englander a chance to clarify in the thread above. Through an arragement i had to pay Englander $130 for a motor that retails for $80 ?????????????????

I received my GA motor and have converted it from CW to CCW through the following steps:

Remove bearing cover screws.
Remove bearing cover and armature.
Remove stack screws.
Remove stack and flip it over.
Start but do not tighten stack screws.
Insert armature and bearing cover and start screws.
Make sure everything is lined up perfectly and flush before tightening screws.

See photos below. Sorry that i didnt include a photo of the stack out.

In the first photo you can see wire leads are towards outer edge of motor, in the last you can see leads are pointing opposite.

As i did in my previous thread i will check in so often to confirm the motor is running.

 

[DexterDay]

Yep... Done that with my GA unit 2 years ago.

Very nice write up though. Detailed pics will make this a good thread to Bookmark for years to come.

Thanks for sharing and taking the time to post pics of the process

 

[slvrblkk]

This is exactly what we said to do in your other thread....buy the GA motor, flip the stack....problem solved...CCW rotation.... ;-)

 

[NEStoveOwner]

I was giving Mike a chance to respond to what the GA rep told me. I knew that it could be done, i was never going to buy a CCW GA from Englander.

Thanks

 

[TheMightyMoe]

Good to know! My plans to pick one up off grainger with a 3 year warranty.

 

[bimmerbill]

Hello all, my Englander bottom auger motor is not working. It gets hot, but doesn't turn. The 25-PDVC manual says it uses 1RPM motors in the parts list. Before I order a GA unit to replace it, I want to verify first. The GA 901 is 1.2 and seems to be what is being used. Is that correct?

 

[HD41]

Don't be concerned, I clocked an original Englander Merkle-Korff at 1.3 RPM on bench test. I am using a 2RPM motor on lower auger without any problem.

 

[imacman]

Hello all, my Englander bottom auger motor is not working. It gets hot, but doesn't turn. The 25-PDVC manual says it uses 1RPM motors in the parts list. Before I order a GA unit to replace it, I want to verify first. The GA 901 is 1.2 and seems to be what is being used. Is that correct?

Yes, the 901 is the one to get in that case.

BTW, have you removed the bottom auger motor AND the auger to make sure there isn't just a pellet jam inside? The motor may not be bad at all.

 

[HD41]

You might be able to get a bit more life out of the Merkle-Korff motor. Take it off, remove the armature, WD-40 the shaft/bearing and re assemble, align, bench test as described. It worked for me and the motor is still running two years later.

 

[bimmerbill]

OK, thanks for the info. I took it apart and the gear box spins, tho a bit stiff. How easily do these turn? I couldn't do it with my hand and had to put the output shaft in my vice, then I could spin it fine.

I was wondering if I could clean it up with some electrical contact spray or WD. I may try that. I did order 2 of the GA units, but may try to get the old motor working with a cleaning so I don't have to keep burning oil!

I took the bottom auger out. It seems the top auger was bound up because the bottom stopped working. I had smoothed the bottom auger a bit a while ago, but since its apart I may do a bit more. May do the top auger as well.

 

[Don2222]

OK, thanks for the info. I took it apart and the gear box spins, tho a bit stiff. How easily do these turn? I couldn't do it with my hand and had to put the output shaft in my vice, then I could spin it fine.

I was wondering if I could clean it up with some electrical contact spray or WD. I may try that. I did order 2 of the GA units, but may try to get the old motor working with a cleaning so I don't have to keep burning oil!

I took the bottom auger out. It seems the top auger was bound up because the bottom stopped working. I had smoothed the bottom auger a bit a while ago, but since its apart I may do a bit more. May do the top auger as well.

You need to clean the Top & Bottom equally well. I just proved that on my last 25-PDVC!
See all the gory pics and details!
https://www.hearth.com/talk/threads...-little-auger-burs-pimp-my-auger-pics.102423/

 

[bimmerbill]

Thanks, I took the motor apart and sprayed it down with electric motor cleaner and now it works. I guess I will do this as part of normal maintenance. Hopefully it keeps working until I get my GA unit replacement. I'll pull the top auger and smooth it as well. Its fairly warm today so don't have to worry about not running the stove much. The kid complains since she can't run to it after her shower/bath, but it should be up and running soon.

Thanks again!

 

[HD41]

Glad you got the help you needed, I suggest using some light oil on the cap and shafts and while you are at it you might want to lube the shafts on the convection and room air blowers. My motors get progressively noisier and this quiets them down for a while. Can be done without removing. Kind of tricky getting oil on the shafts, I used an old school oil can with a 5" spout and Harbor Freight freebie LED light to see where the oil was going.

 

[jnlclue]

Hi,

My BIL in NY has an Englander with failing Merkle lower auger motor; shaft is loose in the brass sleeve and it locks up after 5-10 minutes use.

I'm helping him investigate the problem and devise a solution. It appears that the GA motor now has a brass sleeve 'bearing', instead of ball bearings -- http://www.gleasonavery.com/catalog/pellet-corn-stove-motors.html -- does that render it effectively equal to the feeble Merkle? Also, they have the A901R, CCW -- is that what's needed for the lower auger in an Englander?

Thanks in advance for any advice.