Re: (ET) Still bucking, it's not the belt, no cards found in E12.

Richard,

Sounds kind of like what was happening to me with my E20 recently. The problem was intermittent. I would step on the pedal and the tractor would start to go and then "click", power gage drop out to zero, and tractor immediately stops. Sometimes I could just release the pedal and press it again and I would be ok for a while and then it would happen again. At other times I would have to do the "let up - press again" thing several times before it would stay engaged. Sometimes all I would get is the click with no tractor lurching/bucking. Sometimes when it was working, the problem got worse when the tractor was under load - like when going up a hill. Had me stumped for a bit, but finally figured it out to be one of the 4 relays behind the instrument panel. Can't remember which one at the moment, but I THINK it was the forward relay, but MAY have been the reverse. Am not familiar with the E12, but I wouldn't be surprised if it uses the same relays. Swapping out with a new or good used one should confirm whether that is the problem or not. Be aware though, that a loose connector or bad wire to the relay can cause the same symptom. I'd bet on the relay itself though, as they are typically orignal and the contacts in pretty bad shape or out of alignment. If you don't have any other relays on hand, then swap between the ones you have already on the panel. If one is bad, your symptoms will change. If not, they won't!

Hope this helps!

Don Cohen

You will need the service manual from Bill Gunn or ask on the mail group. My E12 has no circuit cards. If I get a chance I will look in the service manual and try to figure something out for you. I need to fix My E12 as I blew a diode (again) that's in the reversing circuit. The tractor only runs in reverse right now. The E12 is my back up tractor and I have not needed it this summer. I use the batteries in it as a backup for the UPS system for the house. I have a cord and connector system to connect between the tractor and the UPS battery bank. They all use the same golf cart batteries so it's a good match. With out the service drawing it's hard to figure anything out about the wiring on the tractors. Even with the drawings it's still hard! Dwight Dwight L. Hazen, Indiana University, UITS Bloomington, In. 47408-7378 812-855-5367 IP phone 812-856-9229 hazen indiana edu http://php.ucs.indiana.edu/~hazen/ Ham Radio wb9tlh arrl net http://wb9tlh.ampr.us "The complexity of your life is directly proportional to how many gas engines you own - 2 cycles count double." -----Original Message----- From: Richard Zachary [mailto:njcfsa earthlink net] Sent: Monday, November 10, 2003 2:55 PM To: Hazen, Dwight L Subject: Re: (ET) Tractor ride not smooth Hi Dwight, Thanks for the response. I am a novice at this having just gotten the E12 in June and have little background experience. Anyway, went out and tested it and yes, the load meter bobs up and down corresponding to the movement of the tractor. Was able to look under and see that the drive motor pulley was clear of the wiring, so that, at least, eliminates that. As to field voltage, I went to the "Home Owner's Service Manual" that came with the tractor and tried to find info on field weakening. Found some info for the E12S that shows a card #1 and a FW connection. But when I opened my E12, I couldn't find the card #1. Doesn't look like the E12 has such a card or its located some place else. Can you give me any specifics on where to look for a loose connection? I think the reverse relay should be on the back of the dash panel on the left side (away from the speed control). What do I do with this reverse relay when I find it? Don't be afraid to insult my intelligence by being overly specific. ASSUME THAT I KNOW NOTHING. Thanks very much, Richard "Zack" Zachary Hazen, Dwight L wrote:

start. Also is the motor drive pulley wearing through the wiring harness under the frame? Dwight Dwight L. Hazen, Indiana University, UITS Bloomington, In. 47408-7378 812-855-5367 IP phone 812-856-9229 hazen indiana edu http://php.ucs.indiana.edu/~hazen/ Ham Radio wb9tlh arrl net http://wb9tlh.ampr.us "The complexity of your life is directly proportional to how many gas engines you own - 2 cycles count double." -----Original Message----- From: elec-trak-bounces cosmos phy tufts edu [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of Richard Zachary Sent: Monday, November 10, 2003 11:17 AM To: Elec-trak list Subject: (ET) Tractor ride not smooth My tractor bucks some. That is, the ride is herky-jerky. It seems worse in reverse than forward. Is there some adjustment I can make? Did I tighten the drive belt too much maybe? Thanks for any advice you may be able to give. Zack E12 _______________________________________________ Elec-trak mailing list Elec-trak cosmos phy tufts edu https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak