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rjbevan
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| Posted: May 19 2010 at 8:52pm | IP Logged
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I have a 2000 Frontier 5 speed. I have to practically put my foot through the floor in order to change gears. The clutch is adjusted all the way out on the master cylinder. The slave cylinder moves no more than an inch when I push down the clutch. It seems it should move more than that. Does anyone know how how far the slave cylinder should travel in engaging/disengaging the clutch at the transmission?
It makes sense that it may be a master cylinder or slave cylinder problem and not a clutch being worn out. If it were worn out, wouldn't it be more of an issue of the clutch engagement/disengagement toward the top of the pedal travel? I am really hoping this is not going to be a clutch replacement.
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frontierguy
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| Posted: May 20 2010 at 8:28pm | IP Logged
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What do you mean "the clutch is adjusted all the way out at the master cyl" ? Also, how much "free play" is in the pedal, you don't want much free play at the top of the stroke.
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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
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2011 John Deere X720SE
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rjbevan
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| Posted: May 20 2010 at 9:03pm | IP Logged
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I mean the threaded master cylinder piston shaft that connects to the clutch pedal has been lengthened/adjusted out as far as it can be. There is a lot of free play at the top of the clutch pedal stroke. Like I said, I cant change gears unless the clutch pedal has been pushed to the floor all the way - the last 3-4 inches is the only place I can shift gears (i.e. - disengaging the clutch). I am literally pushing my foot to the floor as hard as I can in order to change gears.
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rjbevan
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| Posted: May 21 2010 at 4:15pm | IP Logged
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So I just replaced the clutch master cylinder and the slave cylinder. I have tried to bleed it and am in the process of doing so now - after bench bleeding the master cylinder prior to installation. How much should. It is seemingly impossible to bleed the air out - I have pumped and bled for half an hour now and am getting nowhere. The slave cylinder moves back and forth less than an inch and the pedal has to be pulled back up to the top in order to pump up the system to bleed it. I've done this many times on brakes and hydraulic clutches and have never had such a hard time bleeding the system. Am I missing something somewhere?
Back to the original question - How much should I expect for the slave cylinder to travel "at the transmission" for it to be considered normal?
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rjbevan
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| Posted: May 21 2010 at 7:29pm | IP Logged
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Finally fixed the problem. Certainly got all the air out of the system by bleeding for at least a half hour - over and over again -- with the piston from the master cylinder only adjusted about halfway out on the shaft to the clutch linkage. Once I adjusted it and lengthened the travel of the piston it bled correctly and the pedal came back to the top on it's own finally. The part that sux is that all I wanted to do in the first place was bleed the system - with the existing slave cylinder and the master cylinder - but when I tried to do that, the nipple on the slave cylinder snapped off. Oh well. All's well that ends well - I have a new master cylinder, new slave cylinder, no air in the system and it shifts perfectly now.
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frontierguy
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| Posted: May 21 2010 at 8:12pm | IP Logged
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It sounds like it needed them anyway. Good job. Were you bleeding the clutch by yourself or did you have a helper????
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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
Nissan Technician 25 + years
2011 John Deere X720SE
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rjbevan
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| Posted: May 21 2010 at 10:02pm | IP Logged
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Thanks for the pat on the back. I did have a helper - my 12 year old daughter and I had to bribe her to help me after the first 10 minutes of pumping by going bowling tonight. I tied a string to the clutch pedal so she could just pump with her foot and pull the string to get the clutch pedal back up. This is a great forum by the way. I feel confident that I can "get by" using this as a resource.
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frontierguy
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| Posted: May 23 2010 at 8:55pm | IP Logged
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Nice!!! I like the string method, I'll have to use that next time my wife helps me bleed a clutch.
__________________
'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
Nissan Technician 25 + years
2011 John Deere X720SE
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dewyboy
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| Posted: Nov 25 2010 at 8:53am | IP Logged
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Did you notice a difference in the distance the slave cylinder traveled? I think I'm having a similar issue with my 09 after playing with different transmission fluids and having no luck. I bled my clutch and it seemed to help for a day or two but it seems to fall back to feeling like the clutch is not fully disengaging. Do you know if you have a damper in your clutch line? I've heard this can cause issues with the clutch not disengaging completely (thinking about taking mine out if what I’m seeing is one).
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Nissan Frontier Forums : Problems / Technical
Topic: Slave cylinder travel at transmission
