Yesterday's Tractor Co. Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

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

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Garden Tractors Discussion Forum

Re: Case 446 valve

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]
Tom Arnold

01-27-2013 08:56:47

Report to Moderator

These tractors use what is known as an "open center system". The oil flows from the pump to the PTO valve, to the Travel/Lift valve, to the oil cooler and back to the reservoir, ready for another trip through the pump. The lever on the PTO simply diverts 100 percent of the oil flow to whatever attachment is connected to the valve.

Either way, all of the oil flow ends up leaving the PTO valve and going to the Travel/Lift valve where a portion can be used to raise or lower attachments and either all of the flow can be sent to the drive motor or just a portion.

The oil is in constant circulation, ready to go to work for you at the flick of a control lever.

When you first connect up that tiller, remove one quick coupler on the tiller and stick the hose into a bucket. Then with the engine idling, open the PTO valve and flush out the tiller motor and lines. For the cost of a quart of oil, it isn't worth risking contamination to your system.

While the tiller will rotate in both directions, the tines are only sharpened on one side. If you are tilling hard ground, then the rotation direction is going to matter.

Even the PTO kit should be flushed out prior to installation for the same reason. The lines or hoses can be cleansed with solvent or with fresh diesel fuel. There is so little oil in the valve itself, it isn't worth bothering with if the ports look clean inside.

[Log in to Reply]   [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). 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. [ About Us ]

Home  |  Forums

Copyright © 1997-2018 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