I have a bit if whining from gearbox when in neutral and clutch 'not pressed' (de-pressed), which gets better when warm (then you cannot hear that much of it). It has been there for years, and not really got much worse, but I am going to swap Clutch in coming weeks, and tempted to see if I could change the 'Input shaft bearing' without too much work when it is out of car.

 

Know that 'slight whine' may be from other bearings on main shaft, but suspect that input bearing is the most likely.

 

Can you swap the input shaft bearing without splitting the whole box? What I look to determine is if it can be done by taking the front cover plate off (which will be taken off to replace front seal anyway).

Hope you get this sorted matey I have the same thing, someone will be along shortly to advise im sure :)

Hope you get this sorted matey I have the same thing, someone will be along shortly to advise im sure :)

 

Ditto!

Mines also the same! Although its that loud on mine it's actually embarrassing to drive slow past pedestrians! Lol

Would like to know it too

And me

From what i have researched so far, i have the same issue lol, it seems that the gearbox needs stripping from the back right through to the input shaft, apparently bearing needs pressing in/out, also a couple of other bearings worth replacing whilst in the thick of it.

You can see the bearing with the front plate off inside the bell housing, but chances are you aint gonna get it out.

 

Jeff may have some experience on this and hopefully will post to confirm.

I always understood this was a thrust bearing problem, not with Zeds specifically, but in general. The first time I heard it was on a Citroen AX, turned out to be the thrust bearing.

Service Manual is opening box from the back and working forward.

 

Have searched further and looked at a rebuild that has a fair level of photos taken from a Pathfinder gearbox rebuild (believe Pathfinder and Z32 share same FS5R30A box - but with different bell housings and probably ratios) and there it is split from back.

 

If anyone has done a rebuild or opened / split a manual box and have experience it would be good to get confirmation if only way to get input shaft bearing is in essence a full disassemble of box.

 

I am hesitant to split box, since it has no issues except this whining that really only is noticeable when cold.it is running well in all aspects (except some whining when cold). Car has about 190.000 km, so bearings will not be new any longerHave MT-90 to go into box, which may help, but if it is not too

Are you sure the gearbox is whining and not the dif? I can hear the whine from cold more from the rear of the car than under the front of the tunnel, my other issue is the sort of rattle when the clutch is out in neutral, i put clutch in and it goes, i fitted new release bearing when i did the gearbox nearly 2 years ago although im still not counting that out as at least a partial culprit. Also i get a raise in revs when i engage the clutch and when i disengage its almost like something is catching or creating load, which it never used to do. Again this is in neutral and not when put into gear.

It got to be gearbox in my case. I have the whine when 'standing still / parked', and having clutch depressed, so diff should not be moving then.

It got to be gearbox in my case. I have the whine when 'standing still / parked', and having clutch depressed, so diff should not be moving then.

 

If you have the clutch pressed, the gearbox input shaft won’t be moving. It can’t be the bearing. Not if your are standing still in neutral, and clutch not pressed then that’s different.