Hydraulic clutch bleeder screw - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-29-2009, 08:59 AM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hydraulic clutch bleeder screw

Hello
I have a hyd clutch master and slave from a mid to late 80's Camaro
It is new and this is in a custom application. The slave is higher than the master(floor mounted pedals)
There is a brass set screw (bleeder screw)on the slave cylinder that has an allen key head
I am by myself doing this, tried all day yesterday to bleed it, had it close once but then lost it later trying to get the last of the air out
I have a vacuum pump, but I would need some type of conventional bleeder screw to go in place of the set screw.
Does anyone know what bleeder screw will work , so I can do this myself with a vacuum pump. The threads are course...looks like 5/16 -18 but I wonder about metric......just don't know and frustrated
I need an extra arm and a leg to do this the conventional way,,...and the dogs won't help
thanks
Tom

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-29-2009, 09:26 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by henny496
Hello
I have a hyd clutch master and slave from a mid to late 80's Camaro
It is new and this is in a custom application. The slave is higher than the master(floor mounted pedals)
There is a brass set screw (bleeder screw)on the slave cylinder that has an allen key head
I am by myself doing this, tried all day yesterday to bleed it, had it close once but then lost it later trying to get the last of the air out
I have a vacuum pump, but I would need some type of conventional bleeder screw to go in place of the set screw.
Does anyone know what bleeder screw will work , so I can do this myself with a vacuum pump. The threads are course...looks like 5/16 -18 but I wonder about metric......just don't know and frustrated
I need an extra arm and a leg to do this the conventional way,,...and the dogs won't help
thanks
Tom
All that need be done, is to crack the allen at the slave, press the pedal until fluid flows, lock the allen. Repeat. The air will always go UP, towards the slave.

Obviously, if the allen is at the bottom of how the slave is mounted, it will need to be either pressure bled or turned so the allen is at the top.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-29-2009, 09:31 AM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for that info. The problem is trying to get someone to help
I will see what I can do
Tom
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-29-2009, 09:41 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by henny496
Thanks for that info. The problem is trying to get someone to help
I will see what I can do
Tom
Help? What's that??

You are talking to a guy who rebuilt a TH400 tranny- with the tranny still in the car! I can't count all the AT's I've changed by myself. It's all in how you hold your mouth.

Take a bungee cord. Wrap/strap that mother around the pedal and whatever's close enough that it can be used to hold the pedal down.

Now, at your leisure, go back up to where the slave is at, crack the bleeder, and let the air out.

Repeat, pumping the pedal gently between bleeds.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-29-2009, 09:54 AM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,367
Wiki Edits: 0

Thanks: 1
Thanked 21 Times in 19 Posts
Is it the master that sticks out 90* from the firewall
or the one that sits at about 45*

there could be air trapped in the masters or a line that refuses to come out.

I have a master from an 88 Chevy pick-up and the slave from an 86/7.

90* master----The only way I can get it to bleed, is to jack up the rear of the car. Seems a bubble gets hung up in or near the master and needs to purge thru the resevoir
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-29-2009, 10:06 AM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Cobalt and Brian 59 for your replies
I will go back out , take off the slave and rebleed the line and master. I will then push the rod in and out of the slave with a hose from the line fitting a can of brake fluid, then put it back on
I will still have some air, but I can pump the pedal and then cut a 2x4 to jam between the cage and the pedal to hold it down. I am just afriad of the pedal releasing once it gets pressure causing the board to fall.then air in the system, but maybe a bungee cord back up somewhere may help
(Brian59 ) The master has the mounting flange on a 45 * angle and the slave bolts on at a 90* angle. The car is already up on stands , so I cannot move it(other parts I am waiting on)
thanks again
Tom
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-29-2009, 02:52 PM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I went to the local auto parts store and got a 10 mm bleed screw for brakes. I measured against the set screw and all I had to do was carefully grind the point off the bleed screw, so it has a flat bottom, the same as the set screw
Now I can vacuum bleed it
this hyd clutch has been a pain in the butt..I hope it has been worth the effort


it did not work....I give up for today

Last edited by henny496; 06-29-2009 at 03:17 PM.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 06-29-2009, 04:32 PM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 57
Posts: 5,204
Wiki Edits: 26

Thanks: 7
Thanked 116 Times in 101 Posts
I have used a lenght of wood to bleed barakes by myself. Hook to pedal, push pedal, wedge wood against seat track or steering wheel, repeat as needed. it takes a while but it works
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 06-29-2009, 05:26 PM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for your reply T-bucket
I had gone back out, took the slave off again and submersed it into a container full of brake fluid, then pushed the rod back and forth until all the air was out of it(left the slave in the container of brake fluid)
I then put the high pressure line from the master into the container and pushed the clutch in an out many times until I was sure not more air was coming out
I then connected the line and slave, while both were still submersed in the brake fluid
.......very messy, but I think I got it
I have to bleed the brakes tomorrow, so may be using the wood idea if the vacuum pump gives me a headache, and at this point I am expecting more headaches lol
thanks again
Tom
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 06-29-2009, 08:04 PM
Registered User
 
Join Date: Oct 2007
Location: Michigan
Posts: 106
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
With the slave higher than the master, the fluid likely will drain back into the master from the slave so don't forget a residual valve [1 way] in the line
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 06-29-2009, 08:09 PM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,367
Wiki Edits: 0

Thanks: 1
Thanked 21 Times in 19 Posts
He should be okay IF he keeps his resevoir up on the firewall.
Perhaps up as high as he can get it
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 06-29-2009, 08:18 PM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hello
I had asked about a residual valve but was told it may infere with the action of the clutch
My brakes have residual valves (2 psi) but the resovior on the master cylinder is connected to the master. The hyd clutch has the resovoir on the firewall, making it the highest point
The master for the clutch and brakes are floor mounted and behind the pedals
I went out and tried the clutch after my last reply and although it does not appear like a lot of travel, I put it in gear to try it with and without the clutch(board holding down the pedal) It does work ok and I can move the driveshaft with my hands when the clutch is depressed
I do feel happy with this and want to thank you guys for all of your input and advice.
thanks again
Tom
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 06-30-2009, 05:37 AM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,367
Wiki Edits: 0

Thanks: 1
Thanked 21 Times in 19 Posts
Not a lot movement at the slave

MAYBE 1" of travel--------just enough to disengage the disc

(on GM master and slave)
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 06-30-2009, 12:05 PM
Member
 
Last photo:
Join Date: Oct 2005
Location: Beaverton Ontario Canada
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I don't think I quite have an inch of travel, but with the tranny in first gear at 2.98:1 and a 4.56 rear gear, I can move the driveshaft easily with my bare hands, once the clutch pedal is depressed
I will be testing in the laneway soon enough. I have to be at the racetrack for Aug 1st
...still lots to do on the car
thanks again
Tom
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
hydraulic clutch setup problem brainsboy Transmission - Rearend 4 08-02-2008 01:50 AM
Centerforce Dual Friction Clutch slipping? Zeder Transmission - Rearend 3 11-20-2004 01:57 PM
Ford Ranger Hydraulic Clutch cvaselaar Transmission - Rearend 3 10-09-2003 07:27 PM
Hydraulic Clutch In 55 Chevy Truck? Coleman396 Transmission - Rearend 1 08-30-2003 06:04 AM
stripped bleeder screw APACHEMAN Suspension - Brakes - Steering 3 08-26-2003 10:35 AM


All times are GMT -6. The time now is 05:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.