If that's the case then the braided hose should help with that. It never had any problems before though.
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If that's the case then the braided hose should help with that. It never had any problems before though.
When you release your clutch pedal, there should be some freeplay between the pedal pushrod and the master cylinder piston - about 20-40 thou.
The piston on the master cylinder needs to return fully to allow any excess fluid in the line to return to the master cylinder reservoir. A tiny port opens as it's uncovered by the piston seal in the full release position.
If the port is blocked by a wrong size seal or piston, insufficient pushrod freeplay, someone putting a spacer/o-ring behind the circlip or there has been a stainless sleeve fitted that blocks the port - then the pedal will build up with pressure, especially if there is vibration on the master cylinder piston that "micro pumps" fluid without the port to return it to the reservoir.
I haven't stripped the Patrol Clutch MC yet - this info is just from other vehicles worked on over the years. The "circus pipe" ( what else can you call that rediculous bleeder ?) that spirals around the firewall like a mad woman's breakfast, introduces a whole new level of "what if? "
An easy way to check fluid is returning to the reservoir through the port is to run a hose from the LHF brake caliper bleeder to the clutch slave bleeder. Open both bleeders, depress the brake, and see if the fluid level in the clutch reservoir rises
If you're unsure about the vacuum booster causing problems, remove the vac supply and plug it (but keep the brake booster connected) and go for a drive. The clutch will be heavy but not impossible. (don't think this is your problem though)
I have used a syringe to pump fluid up from the bottom and the level in the reservoir rose as it should.
Yeah I don't think the vacuum booster is the problem either.
The new hose I bought deletes the spirally mad woman top bleeder, so that will eliminate that.
I think your issue may be the hose. I can only be this. As you would think if it were out of adjustment it would do it all the time correct? I suppose time will tell when the new hose goes on.
Would the cap be enough to hold pressure in the line as it heated up it applies pressure?
It's a hard.
Your saying it get worse even though your using the clutch it's still building pressure..
Hi Winnie
I may be way off here as I've never done a Patrol clutch myself...
Does the thrust bearing (release bearing) have free movement on its shaft? Shaft slightly bent? If sticking at any point(s) I imagine this would make adjustment difficult and also cause slow return of pedal/changing resistance point as u mentioned previously in this thread. Bearing movement on shaft may also be affected by temp too if tolerance too tight? Maybe cause of noise too?
Seems that you've tried all things fluid, so thought it may be mech/friction instead...
Good luck!!!
I didnt do the clutch myself and I'm not sure but am hoping that it was checked by the mechanic when he did it.
I don't see how that would change the friction point though?
Yeah. I'm not entirely sure of that myself. My (entirely uncaffeinated and inexperienced) thinking was - if the bearing was catching at differing points on the shaft then it may not apply pressure back through the yoke to the slave, thereby changing volume of fluid in the line (with further uses of clutch) and resultant resistance point.
Looking at cross-section in Haynes, the bearing travel appears to go over the shaft's splines, so maybe small tag of metal or gunk build up in here?
Maybe I need my coffee...
As expected, the new clutch hose didn't change a thing. I am truly out of ideas and to be honest I am about at my wits end with the whole saga. I will let my mechanic know on Monday that it is still fucked and he can look at it again.
Fark mate no one seems to be having a win atm..Quote:
Originally Posted by Winnie
Hey Winnie that sux mate, wouldn't have a clue what to think. This is a sad day for GQs, better not start mine today i reckon. Good luck really hope you can get to the bottom of this soon. .Quote:
Originally Posted by Winnie
Yeah and not to mention I went to start it today and both batteries were dead flat. I've been suspect of the 2nd battery for a little while but the cracker is brand new, it's faulty. I've charged it up and tested it and there is no current draw from the car, so it's discharging itself.
Bugger..Quote:
Originally Posted by Winnie
Not a good day
This was suggested on facebook
http://www.nissanpatrol.com.au/forum...016/09/211.jpg
That was also mentioned earlier here I think
Post #82
I just gave it an adjustment and took it for a drive and I "THINK" I have fixed it... Time will tell!
Ooh, hope so. ☺Quote:
Originally Posted by Winnie
Fingers crossed for you mate!!Quote:
Originally Posted by Winnie
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All that time and I'm not sure now much money and it was the clearance lol..Quote:
Originally Posted by Winnie
Spewing but at least it's fixed..
New clutch and everything else was needed, this problem only came about after the new clutch was put in.
Yea right.. so not to bad then.. it's been going on for a while though ey..Quote:
Originally Posted by Winnie
Hopefully that's all it is..
Yeah I just went for another drive out to blue rock dam and it would seem that everything is working fine... I still get the noise and can feel something in the pedal when I am accelerating hard and then clutch in though.
What are you feeling, rattle, pulses?Quote:
Originally Posted by Winnie
Hard to explain in words. More of a rattle/vibration than anything but is very light. The noise is more noticeable. It only lasts for the stroke of the clutch pedal, and only when you have just accelerated hard through a gear.
Whats the noiseQuote:
Originally Posted by Winnie
Again fairly hard to explain. Sort of a "whooshing" noise is the best way I can explain it.
I dunno about the noise. But that vibration through the pedals and you dislike for you control arm bush engine mounts says to me that you might want to inspect you harmonic balancer. Sooner rather than later.Quote:
Originally Posted by Winnie
I'll check it out but what does it have to do with the clutch?
Like I said its a weird feeling and hard to describe. The sound and the feel are directly related to each other.
Failing harmonc balancers cause vibration,if they cant dampen it, those vibrations have to go somwhere, you've done everything else and at 'wits end' with it all.Quote:
Originally Posted by Winnie
Have you got a body lift in the Patrol Winnie? I remember when i put a body lift in my old MK the clutch hose was pulled tight but only under acceleration it was pulled tighter and it was like a guitar string and all the clutch noise traveled right up into the pedal.
Just in case....
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I had a look at the harmonic balancer this morning and again this afternoon when it was warm, not too sure what I should be looking for though.Quote:
Originally Posted by Ben-e-boy
It doesn't wobble and is tight on there, doesn't make any noises when it spins either.
Its the rubber in the balancer itself it can degrade and become brittle, it won't do its job properly if that happensQuote:
Originally Posted by Winnie
It need to come off to check