Posted by notjustair on November 05, 2017 at 10:11:10 from (70.195.7.163):
I've got to pick the brains on some Deere guys. I had some odd hydraulic things going on with the 7800. A while back I had transmission issues and ended up putting a wheel speed sensor in it and it was fine through planting. During baling there were some odd hydraulic pressures. When it is cold it is fine but once it had been run for a good while it would kick the transmission out if you used the clutch. The clutch would also nearly rip your head off if you used it and was inconsistent. It also blew apart a door cylinder on the baler and the last fields planted showed signs that it wasn't applying down pressure like it should. I finally realized the fluid was getting hot and the air pump was not returning fluid to the rear.
I cut the air line on the left side of the transmission and the pump is working (sucking air). I am able to both blow and suck through the line going back to the rearend so it isn't blocked (this is the model where the pump isn't vented - it is a continuous loop to the rear diff). The machine still never returns the fluid to the rearend. It is right at the full line before starting and is barely visible in the sight glass no matter how long it runs. When you shut it off the level slowly rises back up.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
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.
