(800) 853-2651
SHOP NOW

856 pump vs 806 pump

K

Kory1998

Member
Been researching this topic and gathering info seems that the pump I have on my 806 diesel is for an 856 diesel how ever these two tractor have different static timing , does that matter as to which pump goes on my tractor?
 
This really isnt rocket science. 1st the 856 pump replaced the 806. The 856 had a better advance. any engine that has seen ANY amount of hours will wear. Your timing gears have more lash today than they did when new. Its easy to loose 1-2 degrees of static advance just from wear you can not adjust. Almost ALL old tractors will benefit from a 1-2 degree advance on the static timing. Rotate your pump a 1/16 of an inch in the advanced direction and your problem should go away. Al
 
Kory , Like everyone has said you are beating a dead horse to death. Thirty + year old tractor may have other changes. The change in the pump could have been done years ago but when ever we had those tractors making that pump change was fairly common and if anything helped the performance of the tractor. You should be just fine with the pump as is and just replace those seal in the drive hub and go.
 
Simple, if pump is for 806 use that manual spec, if 856 use that manual spec. That's why I asked you for the COMPLETE DBGFC 637 number, so I could look up what you have before I leave on vacation..
 
The 806 used 3DH and 8DH pumps, 7 degrees total advance, 65-70 CC max fuel setting at 2400 RPM. The 856 2KC has 10 degrees total advance, 65-69 CC max fuel setting at 2400 RPM. If the engine IS getting fuel into oil, and pump HAS been replaced recently, did the drive adapter get new seals too while pump was off? I INSIST on replacing those seals anytime 361/407 pumps are removed for repair.
 
You must log in or register to reply here.

Similar threads

M
1971 JD3020 Diesel Injection Pump
Replies
5
Views
356
mgnowell
M
motoOzarks
Simms injector pump question
Replies
6
Views
458
Dieseltech
D
E
Ford 7810 advancing pump timing possible?
Replies
18
Views
462
Echo575
E
H
2030 water pump
Replies
10
Views
386
buickanddeere
B
F
New Guy
Replies
6
Views
516
YTSupport
YTSupport
Tractor Parts Tractor Manuals

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.

Copyright © 1997-2024 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
Website Accessibility Policy

Back
Top