Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 01-29-2012, 03:50 PM   #1
xxx609
Stock
 
Join Date: Jun 2011
Location: Virginia
Posts: 3
xxx609 is on a distinguished road
Default Need Help with Replacing Clutch Master Cylinder

New user here with a '90 MkIII. Can anyone provide me with any tips for replacing a new clutch master cylinder?
I removed the lower driver's side dash panel and removed the seat to stretch myself out a little easier. One nut to the clutch cylinder is inaccessible!! I noticed that there's a metal bracket that holds the clutch pedal assembly to the metal bottom of the dashboard area - one easily accessible bolt to the bottom of the dash, but I can't determine if the portion of that bracket that mounts to the firewall is spot-welded to the firewall or is only bolted to the firewall with the studs of the new clutch master cyclinder.
Bottom line is - wha's the easier/best way to that inaccessible clutch master cylinder nut. Any help would be greatly appreciated.

Last edited by xxx609; 01-29-2012 at 03:53 PM. Reason: mis-spelling
xxx609 is offline   Reply With Quote
Old 01-29-2012, 05:23 PM   #2
CanadianBak'inSupra
Official hall monitor / search nazi - NO SOUP FOR YOU!
 
CanadianBak'inSupra's Avatar
 
Join Date: Oct 2009
Location: Canada, BC
Posts: 837
CanadianBak'inSupra is on a distinguished road
Default

this is an assembly from an 87 i hope this helps:
Click image for larger version

Name:	DSC00232.jpg
Views:	733
Size:	296.3 KB
ID:	4461
^there should be 1 small bolt and 2 nuts from the master and then a clevis pin and clip connecting the pedal to the piston. they should all be possible with extension combos, or possibly stuby wrenches. its been awhile but i remember it being a big pain in the mark3...

the below pictures are in my 84 (mark2) it used to be an automatic trans. the assembly are almost the same so it give ya an idea what it looks like down there...
Click image for larger version

Name:	DSC00235.jpg
Views:	1884
Size:	294.1 KB
ID:	4462
Click image for larger version

Name:	DSC00234.jpg
Views:	411
Size:	292.3 KB
ID:	4463
only one nut is visible, the bolt at the very top and the other nut is time consuming...
__________________
1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.
CanadianBak'inSupra is offline   Reply With Quote
Old 01-29-2012, 06:28 PM   #3
xxx609
Stock
 
Join Date: Jun 2011
Location: Virginia
Posts: 3
xxx609 is on a distinguished road
Default

Thanks very much for the hints and the pictures! I realize that the 2nd nut from the master is not visible and that you must get it by "feel". I don't look forward to that. For future reference, your 1st photo shows the pedal bracket off the car. So.....the single bolt to the bottom of the dash and the two studs from the clutch master are the only attachment points that affix the bracket to the car???
xxx609 is offline   Reply With Quote
Old 01-29-2012, 07:22 PM   #4
CanadianBak'inSupra
Official hall monitor / search nazi - NO SOUP FOR YOU!
 
CanadianBak'inSupra's Avatar
 
Join Date: Oct 2009
Location: Canada, BC
Posts: 837
CanadianBak'inSupra is on a distinguished road
Default

yes just that bolt holds it, and the fact that it sandwiches the firewall between itself and the master cylinder, with the two studs on the master.

this whole job just sucks...
PS, its not manditory that you bench bleed but does take alot less time during the bleeding process.
good luck!
__________________
1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.
CanadianBak'inSupra is offline   Reply With Quote
Old 01-29-2012, 07:24 PM   #5
CanadianBak'inSupra
Official hall monitor / search nazi - NO SOUP FOR YOU!
 
CanadianBak'inSupra's Avatar
 
Join Date: Oct 2009
Location: Canada, BC
Posts: 837
CanadianBak'inSupra is on a distinguished road
Default

Quote:
Originally Posted by xxx609 View Post
the single bolt to the bottom of the dash
it is sitting the right way up in my picture the one bolt is in the top. the two studs are at the bottem
__________________
1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.
CanadianBak'inSupra is offline   Reply With Quote
Old 01-29-2012, 11:06 PM   #6
cre

Toyota
Racing
Development
 
cre's Avatar
 
Join Date: Apr 2007
Posts: 5,036
cre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond repute
Default

Taking the seat out makes the job a whole lot easier.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.

If you're so inclined I'm always more than happy to accept tips via PayPal.
Tip Jar --->
cre is offline   Reply With Quote
Old 01-31-2012, 05:58 PM   #7
xxx609
Stock
 
Join Date: Jun 2011
Location: Virginia
Posts: 3
xxx609 is on a distinguished road
Default

To "CanadianBak..." Job complete!!! Thanks for your help. It took less than a half hour to remove and re-install the seat and the lower dash panel. But my neighbor and I struggled with that visually inaccessible nut on the clutch master cylinder stud for over an hour: A 2.5" deep-well socket on a 5.5" ratchet extension seemed to work best; although only in 1/8-turns because of LIMITED space. I was smart enough to stuff rags around the wiring behind the lower driver's kick-panel to prevent the loss of any spring clips/nuts, etc. Yank the old master out and in with the new. Fight some more getting the barely accessible nut back on; replace the 2nd nut in a few seconds; re-adjust the clutch pedal throw and free-play; insert the clevis pin and spring pin - good to go!! A quick road test verifiied that the clutch/starter interlock worked OK and the position of the clutch pedal-to-cruise control disengagement worked OK. At my age (65) some Advil or Alleve before AND after the work helps with aches and pains.
Removing the seat is a neccessity - just lie on your back with your feet/legs resting on the folded down rear seat. Prepare to spend a good 4 hours if you've never done this before. (Time for another test drive to admire my work!!!)
xxx609 is offline   Reply With Quote
Old 02-01-2012, 02:36 AM   #8
CanadianBak'inSupra
Official hall monitor / search nazi - NO SOUP FOR YOU!
 
CanadianBak'inSupra's Avatar
 
Join Date: Oct 2009
Location: Canada, BC
Posts: 837
CanadianBak'inSupra is on a distinguished road
Default

good to hear you got the job done!
__________________
1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.
CanadianBak'inSupra is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How hard is the clutch master cylinder to replace? the#1 MKII Supra 2 05-27-2016 04:32 AM
Replacing Clutch reservoir Hose and fixing rock plate (plastic one) Grandavi MKIII Supra 2 09-29-2008 05:49 AM
Clutch Master Cylinder question. 1989 Supra. PFlanagan MKIII Supra 4 08-07-2008 09:20 PM
Clutch Master Cylinder Help please!! ebang MKIII Supra 5 05-13-2007 06:36 PM
Maintenance brake and clutch master cylinder fluid IHateHacks MKIII Supra 1 04-18-2007 08:15 PM


All times are GMT. The time now is 05:11 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86