fondo Posted February 2, 2007 Share Posted February 2, 2007 I have a 91 nissan pathy XE and I replaced the master cylinder a while back with one I purchased from a junk yard. Now my brake pedal can be pressed all the way to the floor with not much resistance. I think the one I bought is off an older model, say maybe '90 or earlier. Is this master cylinder the wrong one for my year and if so what is different about it? Thanks Link to comment Share on other sites More sharing options...
94extreme Posted February 2, 2007 Share Posted February 2, 2007 what were you thinking when you were buying a junk MC - the most critical part of your truck? :o it's a bad one not a wrong one. that's what the pedal does when the MC is dead. btw. did you bench bleed it and then bled all the lines? Link to comment Share on other sites More sharing options...
5523Pathfinder Posted February 2, 2007 Share Posted February 2, 2007 Make sure you didnt pull one off for rear disc brakes and you dont have them. It wont work correctly. Like MZ said, did you bleed everything correctly and get the air out? Yeah, I wouldnt trust a J/Y master cylinder, unless you rebuilt it. Link to comment Share on other sites More sharing options...
fondo Posted February 2, 2007 Author Share Posted February 2, 2007 I bench bled it and ran at least 1.5 bottles of brake fluid through the system before the final bleed. If it was bad wouldn't leak (between the vacuum boost and the cylinder flange itself)? At least this is what happened with the old one before I replaced it. Maybe it has something to with rear disc brake like 5523Pathfinder said. Anyone know when they started using rear disc on their models. Thanks Link to comment Share on other sites More sharing options...
5523Pathfinder Posted February 2, 2007 Share Posted February 2, 2007 (edited) I want to say is was 93 when they starting using disc. Its so hit and miss as to which ones have it. If its an LE, i believe they all have it. The 94 I worked on yesterday did. Edited February 2, 2007 by 5523Pathfinder Link to comment Share on other sites More sharing options...
Pavelow Leaks Posted February 2, 2007 Share Posted February 2, 2007 my 90 has rear discs. Link to comment Share on other sites More sharing options...
5523Pathfinder Posted February 2, 2007 Share Posted February 2, 2007 my 90 has rear discs. Swapped in or factory? Link to comment Share on other sites More sharing options...
94extreme Posted February 2, 2007 Share Posted February 2, 2007 my 89 had them from the factory too. just xe has the drums on the early models. an MC from a 4 disc system wouldn't do that. it just wouldn't distribute the power like it's supposed to. the pedal should still be stiff. the MC may leak into the booster. you may not be able to see it. Link to comment Share on other sites More sharing options...
RedPath88 Posted February 2, 2007 Share Posted February 2, 2007 my 89 had them from the factory too. just xe has the drums on the early models. hmmm, if you mean that only the XE's (early models XE's) had the drums, well my SE has them. Link to comment Share on other sites More sharing options...
fondo Posted February 2, 2007 Author Share Posted February 2, 2007 Yah I'm probably just gonna replace it with a new one and forget about it. Thanks for all the feedback. Link to comment Share on other sites More sharing options...
94extreme Posted February 2, 2007 Share Posted February 2, 2007 hmmm, if you mean that only the XE's (early models XE's) had the drums, well my SE has them. :bow: Link to comment Share on other sites More sharing options...
RedPath88 Posted February 2, 2007 Share Posted February 2, 2007 I guess it's like anything Nissan... trim levels mean squat! Link to comment Share on other sites More sharing options...
88pathoffroad Posted February 3, 2007 Share Posted February 3, 2007 They offered discs from 87 up. It was entirely optional, but most SE's and LE's have rear discs. Simple question, Fondo: does YOUR Pathy have rear discs or not? Do you remember if the junkyard Pathy had discs or drums in the rear? Link to comment Share on other sites More sharing options...
fondo Posted February 4, 2007 Author Share Posted February 4, 2007 The MC had all ready been pulled by someone who worked there. It was in the back layin on a shelf. I'm pretty sure he said it was from a '90. I don't know what kinda model the mc came from. Mine is drum in back though. Thanks Link to comment Share on other sites More sharing options...
headpeace Posted March 5, 2007 Share Posted March 5, 2007 when replacing the MC, do I have to bleed the LSV and the ABS hydraulic actuator? If so you guys have any tips/tricks for this procedure? I have no experience with repairing ABS stuff :confused: Link to comment Share on other sites More sharing options...
GrimGreg Posted March 5, 2007 Share Posted March 5, 2007 when replacing the MC, do I have to bleed the LSV and the ABS hydraulic actuator? If so you guys have any tips/tricks for this procedure? I have no experience with repairing ABS stuff :confused: There is a certain procedure for bleeding the system with ABS. IIRC you have to have the ingition on (or some other odd thing) when you bleed the valve on the frame rail. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now