Clutch hydraulics

[manora]

Just had to top up my clutch fluid so I decided to check for leaks.
Following the pipe from the master cylinder down to the slave cylinder I came across a three way union. one pipe goes to the slave cylinder the other goes all the back as far as the rear axle and terminates in a two way union with bleed nipple.
The pipe diameter is maybe twice the rest of the clutch pipe work.
I've had a look at the workshop manual and it seems to be an OEM fitment but does anybody know why it's there and what it does?
Peter

 

[BIGSEAN]

mines been chopped and sealed, there are some posts on here about this, but as to what it`s for sry m8 no idea. Mine works fine without it

 

[jims-terrano]

fitted from new it's called the clutch damper pipe. As said they work fine without them, need to check mine as I suspect it's weaping fluid but if it'll hold while the better weather comes I'll be happy.

Jim

 

[TOSKA]

Clutch Damper Pipe

Correct ... a number of comments on here regards this pipe ....

.. it took me AGES to find out where all that Clutch Fluid was going to !!

... dropping off the rusty end near the rear axle & getting lost in all the muck at the back !!

NISSAN seem to have fitted this pipe as a DAMPER to smooth fierce clutch operation, but it does not SEEM to make a difference !!

.. I cut the pipe about 2 inches from the slve cylinder branch, removed the 2 inch bit of pipe plus union nut, cleaned up, bent it over , and filled with solder.

I didn't bother removing all the old rusty pipe to the axle.

8 months now & no leaks & absolutely no difference with pedal pressures etc

...A proper blanking plug would be easier, but i hadn't got one on the day (3/8 BSF I think !! )

... best of luck

TOSKA

 

[apgphoto]

On my 3.0 the damper works as an acoustic damper.

As normal my pipe corroded near the rear axle, cut the pipe and capped it at the 3 way joint. Now have a lovely resonance through the peddle when its operated :thumbs

From what I can gather Nissan modified the master cylinder and piping, fitting as standard and retrofitting in some cases so that the damper was not needed.

Thats why some have and some don't have it

 

[manora]

Thanks for the info, I don't think mine is leaking but it is, or was, hanging loose at the rear end and that fluid went somewhere
I think I will remove and blank before it becomes a problem.
I'm off for a month to Morocco next week, wouldn't be good to lose the clutch on a rocky trail in the Atlas Mountains :doh

 

[Fez_uk]

ohh nice, can I come?

 

[manora]

Only if you buy the sandwiches and fuel :thumbs

 

[rustic]

A proper blanking plug would be easier, but i hadn't got one on the day (3/8 BSF I think !! )... best of luck TOSKA

Am I right in thinking, that some have placed a ball bearing in place of the pipe, and then tightened the union, clearly it has to be the correct size.

I wouldn't do this on brakes, but should be ok on the clutch I would have thought. :nenau

 

[manora]

I've done that on brakes before now, in an emergency. Makes a perfect seal as long as you use a nice clean ball bearing.
I was a bit broke at the time and ended up driving my old Bedford HA van (yes, it was ex Post Office) for several weeks on the front brakes only :naughty. Could hardly tell the difference