gerktj Posted May 4, 2012 Share Posted May 4, 2012 I've swapped a 8.8 in my 88 Comanche. What do I have to do to the master cylinder to make it work correctly? Link to comment Share on other sites More sharing options...
jimoshel Posted May 4, 2012 Share Posted May 4, 2012 Fill it with brake fluid. Link to comment Share on other sites More sharing options...
gerktj Posted May 4, 2012 Author Share Posted May 4, 2012 funny! Link to comment Share on other sites More sharing options...
jimoshel Posted May 4, 2012 Share Posted May 4, 2012 Did you try search and projects? That's been done enough times somebody should have a write up on it. Link to comment Share on other sites More sharing options...
Pete M Posted May 4, 2012 Share Posted May 4, 2012 the master requires nothing. are you asking about a proportioning valve? Link to comment Share on other sites More sharing options...
gerktj Posted May 4, 2012 Author Share Posted May 4, 2012 I thought I read somewhere about removing the check valve behind the seat in the master cylinder??? Link to comment Share on other sites More sharing options...
Pete M Posted May 4, 2012 Share Posted May 4, 2012 are you talking about the XJ prop valve? MJs don't have that. we have a plain old splitter valve up front (looks like a prop valve). we have a rear height-sensing prop valve. Link to comment Share on other sites More sharing options...
gerktj Posted May 5, 2012 Author Share Posted May 5, 2012 no not the proportional valve. Isn't there a check valve that holds pressure on the drum brakes in the master cylinder?? Link to comment Share on other sites More sharing options...
cweemanrun Posted May 5, 2012 Share Posted May 5, 2012 I put a 98 grand Cherokee break booster master and portion valve in mine rig and seems to work good with my 8.8 Link to comment Share on other sites More sharing options...
Pete M Posted May 5, 2012 Share Posted May 5, 2012 no not the proportional valve. Isn't there a check valve that holds pressure on the drum brakes in the master cylinder?? not sure what you're talking about. got a link? Link to comment Share on other sites More sharing options...
gerktj Posted May 5, 2012 Author Share Posted May 5, 2012 I put a 98 grand Cherokee break booster master and portion valve in mine rig and seems to work good with my 8.8 think I may go that route Link to comment Share on other sites More sharing options...
Incommando Posted May 8, 2012 Share Posted May 8, 2012 http://www.pirate4x4.com/forum/showthread.php?t=575345 Link to comment Share on other sites More sharing options...
gerktj Posted May 10, 2012 Author Share Posted May 10, 2012 it's on the road using stock master cylinder for now. I need to get some wheel spacers for it though! Link to comment Share on other sites More sharing options...
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