Yesterday's Tractor Co. We Have the Tractor Parts You Need
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Tool Talk Discussion Forum

A90 john deere shop heater

Author  [Modern View]
railhead

12-05-2009 19:26:13
205.237.134.3



Report to Moderator

Well my faithful A90 quit me today. Heated nicely yest but this AM when I turned it on it hums but motor won't turn and trips breaker on the heater. I have done NOTHING to this heater except change the spark plug ONCE. Have always burned diesel in it, never kero. I took the shroud off and the fan and motor turn very hard...unlike any other elect motor I have that ..any suggestions??? should this motor turn hard? TIA

[Reply]   [No Email]
railhead

12-07-2009 18:50:49
205.237.134.3



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
s.crum you're the man but ALL HELP APPRECIATED.

runs like a singer sewing machine again.



[Reply]  [No Email]
Kentb of SWMO

12-06-2009 16:15:59
98.20.119.94



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
If the motor turns but still hums when turned on look for a motor starter switch not making contact.

Kent



[Reply]  [No Email]
Bob

12-06-2009 17:01:30
69.178.228.68



Report to Moderator
 Re: A90 john deere shop heater in reply to Kentb of SWMO, 12-06-2009 16:15:59  
Kent, as I already told him, it uses a start relay similar to a hermetic compressor and has NO starting switch in the motor.

(I verified this on the jdparts site.)



[Reply]  [No Email]
Ole Shovel

12-06-2009 14:54:47
208.246.9.26



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
See if you can find a parts breakdown for it in parts catalog section after getting to jdparts.com JD didn"t make it just sold it with their name on it. Reddy Heater probably made it and will have parts for it for less $$$. Either the motor bearings have failed and locked up or the pump is locked up that is driven off the motor shaft. Most motors on those can be oiled once a year or so. If the pump has locked up and motor is free you can get just a vane kit or a rotor and vane kit unless the pump is ruined. If had trash in fuel and the filter screen came off bringing trash into the pump it could be ruined but it probably just wore out. Can get maintenance kits for those heaters has new air inlet foam, gaskets, and pump vane kit. Probably a good idea to get a new filter screen too. One the motor Reddy Heater will have it or Grainger an electric motor shop and Grainger has heater kits too.

[Reply]  [No Email]
Bob

12-06-2009 12:19:37
69.178.228.68



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
As the others say, first check that the motor turns easily (no sticky bearings or jammed/broken air pump vanes) and correct any problems there.

If that's OK, there's a start relay for the motor (similar to those used with hermetic refrigeration compressors) that could be stuck/burned/damaged/defective.

Most parts are still available through DEERE, and you can see a parts breakdown for the heater at www.jdparts.com. There's a serial # break or two, so have the serial # at hand when looking for parts.

[Reply]  [No Email]
GordoSD

12-06-2009 06:56:11
216.106.250.208



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Farm stores sell repair kits for a lot of them. Look at the compressor and the motor. Prolly just some air and lube will get your warm again. They are making some nice high output propane units now. Marketed as garage heaters, but interesting enough, it's the way most homes in Japan are heated.Just a LARGE radiant propane heater with a tiny fan. I keep one on hand for power outages. Can heat up two big rooms with it. About 800 sq feet, 9 foot ceilings.

Gordo
Gordo

[Reply]  [No Email]
s.crum

12-06-2009 04:55:40
4.156.231.10



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Sounds like some crud has accumulated in the compresser pump. This is at the back of the motor and has a carbon wheel with 4 carbon vanes in it. It's a very close tolerance unit so be careful as you can crack the wheel in half. These are no longer available but an expensive conversion is. Take the compresser apart and clean it good but don't use solvent just water and wipe off. DON'T use oil on the rotor or vanes, just be sure the vanes work smooth in the slides. A drop of 30W small motor oil in both motor bushings should be good.
I had to stop using my 'salamanders' a couple years ago due to asthma. Much cleaner and quieter using an old oil furnace and really no more expensive.

[Reply]  [No Email]
NCWayne

12-05-2009 21:09:49
173.188.168.35



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
It sounds like the bearings have gotten dry to the point it needs too much force to turn so it's drawing more amperage than usual to get it started spinning. Many of those small motors are very easy to take apart and re-grease or re-oil the bearings. Usually it's just a couple of long bolts through the ends and the main body of the motor. The thing to so is to mark both ends, pull it apart. When you do this keep an eye out for any wave springs that are usually used on the ends next to the bearings and make sure if present they don't get lost or put back in the wrong place. Once apart re-grease/re-oil as needed, then reassemble. Look at it this way, if it already doesn't work then your not out anything to see if you can get it apart and repair it. I've got several heaters, etc around that have small motors in them and I usually have to open up the ones that don't have oil points every few years and re-oil them. I've never had a problem getting them spinning free again doing this.

[Reply]  [No Email]
Uncle Ernie

12-05-2009 21:09:30
64.38.155.46



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Try a little light lubricant on the motor bushings. Sewing machine oil or 10wt hydraulic fluid. Something with some lubricating capacity more so than WD 45 or a penetrating oil. They should free up and start spinning again. If not WW Grainger has a large selection of fan motors.



[Reply]  [No Email]
Whizkidkyus

12-05-2009 20:36:49
64.130.131.20



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Railhead ,


Sounds more like the bearings in the motor are locking / locked up and need replacing . You may be able to get an electric motor repair shop to replace them or you may have to buy a new motor. If the bearings are bad then the motor can't turn as easily and freely, this would then overload the breaker by it pulling to many amps trying to turn over and run. Electric motors should turn freely, but the bigger the motor is , the more force that is necessary to turn it over . But this is just my two cents worth.


Whizkidkyus

[Reply]  [No Email]
Whizkidkyus

12-05-2009 20:19:26
64.130.131.20



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Railhead ,


Sounds more like the bearings in the motor are locking / locked up and need replacing . You may be able to get an electric motor repair shop to replace them or you may have to buy a new motor. If the bearings are bad then the motor can't turn as easily and freely, this would then overload the breaker by it pulling to many amps trying to turn over and run. Electric motors should turn freely, but the bigger the motor is , the more force that is necessary to turn it over . But this is just my two cents worth.


Whizkidkyus

[Reply]  [No Email]
Whizkidkyus

12-05-2009 20:19:26
64.130.131.20



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Railhead ,


Sounds more like the bearings in the motor are locking / locked up and need replacing . You may be able to get an electric motor repair shop to replace them or you may have to buy a new motor. If the bearings are bad then the motor can't turn as easily and freely, this would then overload the breaker by it pulling to many amps trying to turn over and run. Electric motors should turn freely, but the bigger the motor is , the more force that is necessary to turn it over . But this is just my two cents worth.


Whizkidkyus

[Reply]  [No Email]
msb

12-05-2009 20:09:59
67.236.252.156



Report to Moderator
 Re: A90 john deere shop heater in reply to railhead, 12-05-2009 19:26:13  
Sounds like the nozzle could be plugged.



[Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Add a Reply]

Hop to:
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters