 19 mm master cylinder upgrade, installation |
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| mtndawg |
 May 8 2010, 05:22 PM
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#1
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Member  Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None 
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I'm looking all over the place on here for info about installing the 19 mm master cylinder. I rebuilt my pedal cluster and I put the new master cylinder in, then filled the reservoir with fluid. Pumping the brakes isn't putting the fluid into the lines when I open the bleeder on the rear passenger caliper. This is a brand new master cylinder. Do I have to fill it or prime it before it pumps properly? Thanks
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| McMark |
May 8 2010, 05:25 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Make sure the plunger rod which attached to the brake pedal and goes inside the MC has 1mm clearance when released. If your plunger is keeping the MC from releasing fully, you won't get fluid.
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| mtndawg |
May 8 2010, 05:28 PM
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#3
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Member Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None
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Thanks! I'll go check it right now.
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| IronHillRestorations |
May 8 2010, 07:11 PM
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#4
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I. I. R. C. Group: Members Posts: 6,792 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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Do a search for brake bleeding.
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| mtndawg |
May 9 2010, 09:46 AM
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#5
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Member Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None
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A friend came over with a pressure bleeder. WOW! Talk about easier than pumping the brake pedal. I'm going to get one of those. The right tools make the job go so much more smoothly.
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| realred914 |
May 9 2010, 10:00 AM
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#6
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
Recommends you all wear safety glasses, brake fluid burns like fire in the eyes, no shit, it hurts like hell.
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| corsepervita |
May 9 2010, 10:18 AM
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#7
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Member Group: Members Posts: 327 Joined: 18-April 10 From: Redmond, OR Member No.: 11,631 Region Association: Pacific Northwest |
QUOTE(realred914 @ May 9 2010, 09:00 AM)  Recommends you all wear safety glasses, brake fluid burns like fire in the eyes, no shit, it hurts like hell. Yeah I'll vouch for that one... Was bleeding the slave cyl on my 944 one time, was over visiting my parents. From time to time my dad will wrench on cars with me to pass the time. I remember telling him "Now slowly push the clutch" he stomps, the line pops off the nipple, fluid SHOOTS in my eye. I'm going "AHHHHHHHHHHHHHHHHHHHHHH MOTHER****ER OH MY *** HOLY **** IT BURNS WHAT THE **** AHHHHHH" as he's going "what happened? you okay?" with my face covered in the stuff (IMG:style_emoticons/default/lol-2.gif) Funny now of course. At the time, I think it was on a scale of 1 to 10 an easy 7.5 to 8 for pain. (IMG:style_emoticons/default/pinch.gif) Anyway..... yeah. Wear some safety glasses. |
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| dr914@autoatlanta.com |
May 10 2010, 12:12 PM
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#8
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914 Guru Group: Members Posts: 8,110 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
QUOTE(mtndawg @ May 8 2010, 04:22 PM) I'm looking all over the place on here for info about installing the 19 mm master cylinder. I rebuilt my pedal cluster and I put the new master cylinder in, then filled the reservoir with fluid. Pumping the brakes isn't putting the fluid into the lines when I open the bleeder on the rear passenger caliper. This is a brand new master cylinder. Do I have to fill it or prime it before it pumps properly? Thanks I would suspect a clogged rear brake flex line. |
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| Krank |
May 10 2010, 05:53 PM
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#9
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Member Group: Members Posts: 140 Joined: 11-October 09 From: Winnipeg, MB Member No.: 10,922 Region Association: Canada |
Usually you have to bench bleed a brand new master cylinder before installation.
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| EdwardBlume |
May 10 2010, 06:01 PM
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#10
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914 Wizard Group: Members Posts: 12,338 Joined: 2-January 03 From: SLO Member No.: 81 Region Association: Central California
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QUOTE(corsepervita @ May 9 2010, 09:18 AM) QUOTE(realred914 @ May 9 2010, 09:00 AM) Recommends you all wear safety glasses, brake fluid burns like fire in the eyes, no shit, it hurts like hell. Yeah I'll vouch for that one... Was bleeding the slave cyl on my 944 one time, was over visiting my parents. From time to time my dad will wrench on cars with me to pass the time. I remember telling him "Now slowly push the clutch" he stomps, the line pops off the nipple, fluid SHOOTS in my eye. I'm going "AHHHHHHHHHHHHHHHHHHHHHH MOTHER****ER OH MY *** HOLY **** IT BURNS WHAT THE **** AHHHHHH" as he's going "what happened? you okay?" with my face covered in the stuff (IMG:style_emoticons/default/lol-2.gif) Funny now of course. At the time, I think it was on a scale of 1 to 10 an easy 7.5 to 8 for pain. (IMG:style_emoticons/default/pinch.gif) Anyway..... yeah. Wear some safety glasses. (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/lol-2.gif) |
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