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 

1990 K1500 No clutch pedal pressure


 
Post new topic    
View previous topic :: View next topic  
Author Message
wsmm
Long Time User


Joined: 19 Sep 2004
Posts: 588


Report to Moderator

PostPosted: Mon May 17, 2021 7:32 am    Post subject: 1990 K1500 No clutch pedal pressure Reply to specific post Reply with quote

Replaced my clutch master cylinder, slave cylinder and the hydraulic line with the new style braided stainless steel line. Bled by gravity and vacuum bled. No large bubbles only the little one you usually get when vacuum bleeding, from around the bleeder screw. Bled out quite a bit of fluid, kept the master cylinder reservoir full at all times. I still have no clutch pedal, no resistance when I push the pedal down ad the clutch does not disengage. Pedal easily pushed down by hand. I'm at a loss, thinking something is wrong with the new master cylinder but am not sure how to test it. Instructions said the master cylinder did not have to be bench bled before installing. I've probably put at least a 12oz of brake fluid through the system trying to get pressure. Main reason I hanged everything out is every winter the system used to get air in the line just prior to the start of snow plowing and the only way to get pressure was to gravity bleed for an hour or so. Decided to get a jumpy on things this year and fix it early.

Thanks for any and all help and suggestions,
Bill
 
Back to top
View user's profile
Fritz Maurer
Tractor Expert


Joined: 14 May 2011
Posts: 1777


Report to Moderator

PostPosted: Mon May 24, 2021 4:03 pm    Post subject: Re: 1990 K1500 No clutch pedal pressure Reply to specific post Reply with quote

Make sure there are no bends that can act as air traps. Look at your pressure line. Could a bubble raise all the way to the master cylinder from the slave cylinder if it had to? If you have any upside-down humps the air will stay there. Clutch hydraulic system is not very high velocity, which is what it takes to get air to go down hill. You can run 30 gallons through it and that bubble will never move. You need SPEEDY flow. Best solution is route the line for steady fall, like a sewer pipe. If the line can naturally expel air, next try a jumbo syringe attached to the bleeder and blow the fluid up towards the master cylinder.
 
Back to top
View user's profile
wsmm
Long Time User


Joined: 19 Sep 2004
Posts: 588


Report to Moderator

PostPosted: Mon May 24, 2021 4:48 pm    Post subject: Re: 1990 K1500 No clutch pedal pressure Reply to specific post Reply with quote

Fritz Maurer wrote:
(quoted from post at 17:03:54 05/24/21) Make sure there are no bends that can act as air traps. Look at your pressure line. Could a bubble raise all the way to the master cylinder from the slave cylinder if it had to? If you have any upside-down humps the air will stay there. Clutch hydraulic system is not very high velocity, which is what it takes to get air to go down hill. You can run 30 gallons through it and that bubble will never move. You need SPEEDY flow. Best solution is route the line for steady fall, like a sewer pipe. If the line can naturally expel air, next try a jumbo syringe attached to the bleeder and blow the fluid up towards the master cylinder.


Not able to get a syringe on the bleeder screw on the slave cylinder. Was able to use a syringe on the master cylinder to suck fluid and bubbles out the the opening to the line. Even switched to a Mighty Vac and pulled a vacuum ad the cleared the problem.
 
Back to top
View user's profile
Cariboo4x4
Long Time User


Joined: 23 Nov 2014
Posts: 606


Report to Moderator

PostPosted: Sun Jun 13, 2021 1:27 pm    Post subject: Re: 1990 K1500 No clutch pedal pressure Reply to specific post Reply with quote

Good trick buddy showed me. Make sure reservoir is full. Push pedal down with hand and then jerk pedal back up quickly or let it spring back quickly. Very fine air bubbles will be seen escaping up through reservoir fluid. You may have to do this 20-50 times. You can do same with foot by sliding foot off pedal once its pressed down.
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Yesterday's Trucks All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

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. [ 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