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 Master Cylinder or just keep bleeding?
#823140
07/04/07 10:14 PM
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Joined: Aug 2004
Posts: 271
OP
Mudrunner
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Replaced my brake lines when I put the lift on and ever since I've had brake problems. I've bled them half a dozen times and currently get no air out when I bleed. The brake pedal will start out hard, than slowly sink, I pump it and it gets hard again, but if I hold it down, it will eventually sink to the floor. Time to replace the master cylinder? <img src="/forums/images/graemlins/confused.gif" alt="" />
84 Ext. Cab Pickup.
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 Re: Master Cylinder or just keep bleeding?
[Re: Buck]
#823141
07/04/07 10:17 PM
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Joined: Jan 2001
Posts: 11,595
Forum Moderator
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Did you run the master cylinder out of fluid? If so, you need to bleed the master.
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Re: Master Cylinder or just keep bleeding?
[Re: Adam F]
#823142
07/04/07 10:20 PM
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Joined: Aug 2004
Posts: 271
OP
Mudrunner
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Nope, never, always kept it topped off.
84 Ext. Cab Pickup.
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Re: Master Cylinder or just keep bleeding?
[Re: Buck]
#823143
07/04/07 11:36 PM
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Joined: Aug 2006
Posts: 49
Getting the Wheeling Fever
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sounds like you need a new MC
1989 toyota 4runner 5speed 4" lift
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Re: Master Cylinder or just keep bleeding?
[Re: Buck]
#823144
07/05/07 02:29 PM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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Is this the way you are bleeding them. If yes, then your MC maybe shot.
"...This is from the FSM and it works great..."
1. Drivers side rear
2. Passenger side rear
3. Passenger side front
4. Drivers side front
5. LSPV (Load sensing proportioning valve)
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: Master Cylinder or just keep bleeding?
[Re: OOP'S]
#823145
07/06/07 04:58 AM
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Joined: Aug 2004
Posts: 271
OP
Mudrunner
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Master Cylinder. Had virtually no brakes on the way home from work today, pedal went to the floor at every stop, so just stopped by Napa and bought one. I must say that's one of the easiest repairs I've ever done. Never done it before, took maybe 30 mins. using a bench bleader kit. Thanks for all the input. <img src="/forums/images/graemlins/kewl.gif" alt="" />
84 Ext. Cab Pickup.
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Re: Master Cylinder or just keep bleeding?
[Re: Buck]
#823146
07/06/07 02:49 PM
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Joined: Jan 2001
Posts: 11,595
Forum Moderator
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Did you use the "old style" bench bleeder kit where it has the lines that run out of the side and into the reservoir? Or the "new" style where you plug the holes and watch for bubbles inside the reservoir? We have been using the "new" style at work and it takes forever to get rid of all the bubbles.
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Re: Master Cylinder or just keep bleeding?
[Re: Adam F]
#823147
07/08/07 10:22 PM
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Joined: Aug 2004
Posts: 271
OP
Mudrunner
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It was the old style with the lines feeding back into the reservoir. Worked like a champ! <img src="/forums/images/graemlins/kewl.gif" alt="" />
84 Ext. Cab Pickup.
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