do clutch position switches let air into the hydraulic linkage - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-23-2014
energylaw's Avatar
Member
Thread Starter
 
Join Date: Mar 2014
Location: Gaithersburg, MD
Posts: 32
Icon5 do clutch position switches let air into the hydraulic linkage

About every two weeks I have to re-bleed air out of the hydraulic clutch linkage on the 03 Ranger (4WD - 4.0). Got it down to 19 minutes this a.m. before heading out to work. Is it possible, or a somewhat common problem, for air to be pulled into the system through a defective clutch position switch?

Later this month I will replace the entire clutch and linkage system (except for the position switch) in hopes that will fix the problem (replacing flywheel, pilot bearing, clutch disc, pressure plate, master cylinder, slave cylinder, and throw-out bearing.) Wondering whether i should spend the money to replace the switch at the same time.

Thanks for the advice.
Reply With Quote
  #2  
Old 04-23-2014
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,573
No, the NSS(neutral safety switch) is located outside the master cylinder, it is clamped on to the pedal's pushrod, when clutch pedal is pushed in all the way the switch is compressed and closes, passing the 12volts from the key switch to the starter relay, allowing starter motor to activate.

Air can enter from leak in slave or master, also any of the lines.
You would almost always see fluid near the leak.
Pull off inspection plate under bell housing and feel if there is fluid at the bottom of the housing, that would be from the slave leaking.
I assume you keep the reservoir topped up.
Reply With Quote
  #3  
Old 04-23-2014
energylaw's Avatar
Member
Thread Starter
 
Join Date: Mar 2014
Location: Gaithersburg, MD
Posts: 32
Thank you for your reply. It is reassuring to learn that the switch is mechanical and not hydraulic.

When I pull the rubber cap off of the bleed screw, it is wet inside the cap. Could be a bad bleed screw that is not sealing.

Yes, fluid is topped off. I see about a 1/4 inch to 3/8 inch drop in the fluid level over the course of 3 weeks. When I pull the trans. I will look inside the bellhousing for evidences of leaks.

Thinking of changing all the rubber hoses to braided stainless steel flex brake lines of same length, to cure or forestall any leaks from bad hoses. Might also provide a better pedal feel. Will bench bleed both the new master and new slave cylinders before installing.

Lot more room to work under a lifted truck than my lowered 1970 stang. Almost enjoyable. haha.
Reply With Quote
  #4  
Old 04-23-2014
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,573
The Ranger/Bronco II clutch systems are the hardest to bleed that I have ever run across, yes bench bleeding is best to start off with.
Reply With Quote
  #5  
Old 04-26-2014
energylaw's Avatar
Member
Thread Starter
 
Join Date: Mar 2014
Location: Gaithersburg, MD
Posts: 32
Thanks for the reply.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Link for Ford Tech's advice re hydraulic clutch linkage energylaw General Ford Ranger Discussion 0 05-18-2014 05:41 PM
Air in hydraulic clutch lines? fatfett Drivetrain Tech 0 12-06-2013 09:22 PM
clutch hydraulic line slow29 Drivetrain Tech 0 10-09-2009 01:24 PM
Aftermarket clutch with the stock hydraulic system? Gregger Drivetrain Tech 4 07-02-2008 05:32 AM
Help in Bleeding a hydraulic clutch smytty Drivetrain Tech 3 10-16-2006 09:43 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 09:33 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.