Baz (NSW) posted:

Sorry maye just being lazy had that web page open at the time so just linked it, doing my homework before i take the plunge.

Truckster (Vic) posted:

Just do it..

Baz (NSW) posted:

Any pix yet bud on our great get away.

Willem posted:

Hi Son

That was a pretty good description of things. My trucks gearbox has a growl in it when starting up in the mornings. Put foot on clutch and noise goes away. The previous owner said clutch had bee replaced 12 months ago. Can't be the release bearing as they come with the clutch kit. Someone suggested spigot bearing. Anyway I gave the box a good workout this past weekend. I find that if one drives these trucks all the time keeping up the mileage things seem to wear in to place. :o) Have clocked up 13000kms in two months which has included lots of 4x4-ing.

Lots of times with gear changes one gets lazy and you half clutch a gear change and then things go pear shaped. Yeah I would suggest that Jono change the oil in the box. Probably make a world of difference.

Truckster (Vic) posted:

Willem, I'll still bet its the thrust bearing...

Baz (NSW) posted:

Hi Willem thats not the thrust bearing it's the main gearbox bearing or spigot the thrust bearing growls when clutch is disengaged we had this happen to us in tassie we took the car to the dearler in Hobart and they told me that when the the gearbox growls when the clutch is disengaged it's the main bearing and when it is engaged it is the thrust bearing or to put it another way clutch peddle in thrust bearing clutch peddle out main bearing.

Baz.

cokeaddict posted:

Morning dad,
13000 in 2 months ay, not bad at all.
Mate could be 1 of 2 things ....
thrust bearing or imput shaft bearing.
My expierence with gearboxes tells me its the thrust bearing.
Lets face it...we all know how well built these boxes are right. So in my past expierences with gearboxes, Id lean towards the thrust bearing and my reason for this is as follows..

All pressure plates once tightened to the flywheel sit flush. The difference they have is the diaphram (where the thrust bearing sits when activated). That difference in design or length of the fingers can at times cause the bearing to "roll" while idle causing it to sound like a nagging wife....sorry ladies just playing with you.

Also not a common problem but a chance that the swing arm that the bearing sits in may be worn on its pivot point, thus causing it to travel a touch more than it should also causing the brg to rattle when idoling.

As for spiggot bearing, well i have never had to change one so the chances of that being the problem is remote (but still possible...always 1 out there somewhere).

My testing procedure with it is.....
first thing when car is cold, take it out of gear WITHOUT touching the clutch pedal then start her up. let it idle.
Now comes the good part.....
once you hear the noise, very slowly depress the clutch pedal until the noise has stopped. If the noise stops as soon as you depress the pedal, then its the thrust bearing.
If the noise is still there after you depress the pedal with a load on your foot and continues until the pedal reaches the floor, then it looks like the input shaft bearing is stuffed.
Dont forget you can have a combination of both at same time. Just listen to the sounds (pitch changes as you depress pedal)
But for such low Kms Willem, I would go the thrust bearing. Unless the oil has been contaminated but knowing you mate i doubt that has not yet been checked.
I hope i didnt confuse you ...i sure did myself thats for sure.
Take care mate and stay safe.
Angelo

Willem posted:

Thanks Angelo for the detailed description...it will be the thrust bearing then. My mechanic says wait till its screaming before replacing it. I gave the clutch a workout over the past weekend and thinbgs are quiet down there in the box at the moment

Baz...thanks for your confusiing reply but I know where you are coming from......LOL