Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

Repair a temp gauge lead?

Post new topic    
View previous topic :: View next topic  
Author Message

Joined: 04 Oct 2008
Posts: 430

Report to Moderator

PostPosted: Tue Sep 18, 2012 5:58 am    Post subject: Repair a temp gauge lead? Reply to specific post Reply with quote

I'm curious, has anyone ever been able to repair a temp gauge lead? Seems like most gauges are OK but the sensor end is always messed up.
Back to top
View user's profile
Christopher Mikesell
Long Time User

Joined: 09 Aug 2011
Posts: 900

Report to Moderator

PostPosted: Tue Sep 18, 2012 6:20 am    Post subject: Re: Repair a temp gauge lead? Reply to specific post Reply with quote

The temperature bulb is filled with a liquid which vaporizes and expands when the temperature increases. A capillary tube connects the bulb to the gauge, which is a pressure gauge. When the tube breaks or the bulb gets a hole or crack, then the liquid evaporates and it does not work. There are shops which can rebuild them, but it is more expensive then buying an expensive american-made (Rochester) replacement. Someone I know at the local airport had a temperature gauge rebuilt since it had an exceptionally long capillary tube (rear cockpit) that wasn't available new. If they bought a new one, then they would have had to have it rebuilt anyway to get the corrrect length tube.
Back to top
View user's profile
Joe (Wa)
Tractor Expert

Joined: 01 Jan 1999
Posts: 2070

Report to Moderator

PostPosted: Tue Sep 18, 2012 7:41 am    Post subject: Re: Repair a temp gauge lead? Reply to specific post Reply with quote

Christopher is totally correct. I've done several gauges and mostly thermal expansion valves (TXV). The link is basically how it is done.

The problem is mostly a broken or otherwise leaking capillary tube. Cut out the bad section out and splice or splice in a new section. Before final splice fill the bulb near full with ether. You may have to calibrate the gauge to make it more accurate if desired. Back in the day we used R-11 refrigerant which has a compatible temperature - pressure curve with nearly all gauges. Splices were silver soldered.

Temp gauge repair

Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Case and David Brown All times are GMT - 8 Hours
Page 1 of 1

Jump 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 ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

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