Welcome! Please use the navigational links on your left to explore our website.

Company Logo (800) 853-2651 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
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

Ford Tractors Discussion Forum
Order Ford NAA Parts Online

NAA lift cover

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

01-14-2022 10:19:57

Report to Moderator

Needing to clean out the Hyd. Reservoir I finally talked myself into removing the cover (my first). Interesting device. Plan to check adjustments and take a look at the piston to see if original or not.

Some discoveries are a not fully tightened bolt on the Diff pinion cover. And what I guess folks mention as the Cam Follower pin appears to still be round. Wondering what the yellow paint signifies.
Also when I loosened the Large Acorn nut it didn't come off but is firm on the threaded portion of the bypass valve.

Should I apply a little force to see if it comes loose ?

The bypass valve left a good impression on the rubber seal.

[Log in to Reply]   [No Email]

01-15-2022 09:55:58

Report to Moderator
 Re: NAA lift cover in reply to Two0aks, 01-14-2022 10:19:57  
Shaun,Arlen, and Tim. Thanks for the replies.

Shaun. It is fairly clean, but the sump and Diff insides were a different matter. Hyd. Reservoir had quite a bit of sludge and the differential had layer of sludge under the remaining oil, but under that was a solid 1/4" of hard pack. I use a variety of tools for scrapping for both and for the Diff. I dragged out large chunks of accumulation I scrapped loose and (PTO was out), poured solvent in both. I was able to get my hand in the Diff and brass brushed all I could reach thru the PTO hole and vacuumed out both. PTO looks like it has two seals and leather.
Arlen. I hope you and GS are feeling better. Keep me in mind if you get a chance to look for the Bbox.

Tim. In my fool hardiness to renovate I only drove it around my driveway and didn't even work the Hydraulics, plus I have a Vane pump too. I don't know how much I need to get into the cover other than look at the piston and Cyl. for scoring, and check adjustments. Some here said the original piston could come out too far and damage the ring so I thought I should at least take a look. Safety valve and cylinder aren't too expensive, but is there something to look for other than scoring or damage Why replace ? Are there dimensions for cylinder bore and piston such as engine clearances ? I have MPC, FO19 and two other manuals.

[Log in to Reply]  [No Email]
Tim PloughNman Daley

01-15-2022 02:30:00

Report to Moderator
 Re: NAA lift cover in reply to Two0aks, 01-14-2022 10:19:57  
You don't need to pull the top cover to clean out sump & pump. Did you perform The Leak Down Test first? The test would tell you if the cylinder is worn. Unable to sustain a load UP for weeks, months would be a sign of a worn cylinder. You need to remove ram to get the piston out. What are you hoping to tell if it is original or not? What does it matter? The NAA-530-B with O-Ring and leather wiper is pretty basic. More importantly is the cylinder. Cam follower pin appears to have worn a flat. Safety Relief valve would need to be replaced as well. Not a difficult task R&R'g the system, just time consuming. You went this far, if'N it were me, I'd go ahead and replace the cylinder and piston now since the top cover is off. Got your Manuals handy?

Tim Daley(MI)

[Log in to Reply]  [No Email]

01-14-2022 20:38:06

Report to Moderator
 Re: NAA lift cover in reply to Two0aks, 01-14-2022 10:19:57  
Haven't forgot about your battery box. Been a little under the weather. Grandson sick with special flu.

[Log in to Reply]  [No Email]
shaun wallace

01-14-2022 11:58:51

Report to Moderator
 Re: NAA lift cover in reply to Two0aks, 01-14-2022 10:19:57  
Hadnt seen NAA lift cover that clean in years. Most are rusted up bad. The Yellow paint is for bushing OD, control valve spool has paint make too.

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

Hop to:

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 ]

Home  |  Forums

Today's Featured Article - Talk of the Town: Trailerin a Tractor, Chains or Straps? - by Staff. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: " I bought a trailer and plan to take my CASE VAS to some shows. I don't yet have anything to secure it to the trailer. So which is better to buy and use; the ratchet-type straps or binders and binder chains? ... [Read Article]

Latest Ad: Massey Harris 44 with widefront,power steering and cab. [More Ads]

Copyright © 1997-2022 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