(800) 853-2651
SHOP NOW

sealer for ac hose connection

N

NHbalerman

Member
I am still working on this air conditioner and got it to working and the new hose is leaking at the new expansion valve and it is the old style like a JIC fitting not the newer oring kind of fitting is there some kind of sealer that I can put on the threads and put it back together that the R134 want damage it? I am this close to getting it working,but the high side was getting up to about 500 which is way to high,do you think the expansion valve is bad and not letting enough of pressure get through and building up too much pressure and causing it to leak? Thanks
 
500 is way too much even for high ambient temps. If it is charged with the correct amount of refrigerant, it should stay in bounds. If the expansion valve is plugged, it will not make any cool. I would put refrigerant oil on the threads, and tighten them well. Jim
link to chart.
 
Flare fittings seal at the "flare", not at the threads.

As Jim said, 500 psi on the high side is WAY to much, but the fitting shoudn't leak, even at those pressures. Must be some trapped debris, or damage to the mating faces, NO need for glop on the threads to try to correct this.

Have you used a good vacuum pump to evacuate air and moisture form the system before charging?

Do you have an R134 temperature/pressure chart and know how to read it?
 
Lack of adequate air flow over the condenser..part usually in front of radiator...will cause overly high pressures as well. Don?t know what you are working on but back in the day it usually meant the viscous fan clutch was bad. Or just blocked by debris grass, bugs, dirt etc.
 
Well I got her fixed put some pag oil on the threads and tightened it real good and it didnt leak and put a bigger fan to the condensor and now it cools good this is on a new holland 912 speedrower. Thanks for the advice
 
You must log in or register to reply here.

Similar threads

RedMF40
Grease Zerk Possessed
Replies
11
Views
792
RedMF40
RedMF40
J
gasket sealer?
Replies
6
Views
939
JLMac
JLMac
S
Farmall M Fuel Bowl Connection
Replies
7
Views
367
Sparky70
S
D
What is is this flare fitting called - Delphi injection pump
Replies
13
Views
848
Dan S (NY)
D
4
1995 Ford 2120 - TEE for checking hydraulic pressure for clutch
2
Replies
29
Views
418
TheOldHokie
TheOldHokie
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