Spent most of today trying to fix a very light clutch pedal. Was fine yesterday, did a number of hours running around the city, last night I was 10 minutes away from home, and driving around at a lazy pace. Stopped at a set of traffic lights and went to push the clutch in to select first, clutch pedal felt normal for about 4 inches then went to the floor. Pumping the pedal did nothing, and there was no fluid in the clutch reservoir, but there was no puddle of fluid on the road. Got it towed home. This morning to get me started I did some searches on the forum, then raised the car to have a look. No leaks to be seen anywhere at all. The pin which pushes against the piston on the clutch slave cylinder looked like it was on a bit of a strange angle, but at the time I didn't think too much of it, thinking it was a problem with the piston. I pulled the slave cylinder anyway to have a look, internals looked to be in very good shape, very hard to see any wear on the rubber. Put it all back together and bled the system (yes, from all three points) and the pedal still didn't feel right. I had a bit more of a play around with the fork, I don't know much about gearboxes and clutches, but to me it felt like its moving around way too much. I had a look through the service manual and the great pics in the Photo DB. Again, not knowing much about the clutch system, there appears to be a pivot point on the thrust bearing end of the fork, looks like there is a ball under there. Is this correct? Also, in the service manual there is mention of a "holder" spring and a "retainer" spring which go on the fork and/or thrust bearing. Is either or both of these used to hold the fork (to at least some extent) in place? My theory is this: I basically have to push the fork upwards all the way and "find" where it "feels" like it should go (feels like its against that pivot), then put the pin against the fork to hold it in place. Obviously when bleeding the line, eventually when most of the air is out pumping the pedal makes that pin move back and forward. As the pressure is building and just when I think I fixed it the pin slips off, presumambly because of the slack created from the fork not being held in position properly, and the to and fro motion of the pin. Does this sound right? If that is correct, Then this is my theory from last night: The fork came loose and moved down in such a way that the pin would have to move a little further that it normally would (thus creating the funny angle I found it in?). At the same time, it sucked the rest of the fluid through the system (presumambly the fluid level was already very low, I had not checked it in a long time ) introducing air into the line, therefore clutch would not operate. Does this sound right? I'm not really game enough to drop the gearbox myself to have a look, so hopefully I can have it towed to Nissport tomorrow. Let the experts sort it out :YD :-Z
clutch this happened to my zed when i was in brisbane my problem was with the clutch booster its like the brake booster but for the clutch it sits under the dash. its a real pain in the ass to get out took 4 hours from start to finish and a lot of swearing, try this replace that and you should be fine i got mine for 150 bux, second hand which was a good unit to start with hopefully that solves the problem
The pivot ball.... ...failing is a common occurance with it breaking apart. If it has done this it could be possible for the slave cylinder to have over extended and lose fluid
Locally made replacement available > at UAS (cheaper than NISSAN, but then, what isn't:?) )Cheers Lloyd :-Z
