Propeller Shaft

Naaa ....probably a backward one

HA HA HA! THURSDAY FUNNIE

Have not experienced any and have now done about 4000 Ks

I guess i could simply unbolt it and put it back on myself, Toyota put them on that way , must be a reason

Ahh..ok. I must be confused with when its put in the right way but rotated 90deg. I thought there was a balance tag on them, maybe not. If it works why worry :)

Yeh thats it...90deg , i sometimes don't explain things right ,,,umm front uni is now at the rear/..rear uni is now at the front ... errr ows that

I can understand your unease. If Mr Yota put it on one way then there's probably a reason (and I'd love to hear it ). I guess 10mts with the socket set and you will feel better .

Many moons ago I worked on a fleet of FJ 40's and 45's and the acknowleged rule was ALWAYS fit drivelines as manufactured.
Can't remember the full story but out of balance and increased spline wear OR splines not sliding freely and therefore increased load on uni joints, come to mind. The spline wear was a subtle and insideous issue, as you find this out either too late (ie failure) or bad vibration that can come on very suddenly.

Seem to recall spline end always towards transmission/transfer case.

Barry

OK Thats it , I am going to put it as it should be, Thanx all for the replies and good one Barry ..Thanks.

Not quite sure I follow that Richard.

But think what happens if the front uni or the slide coupling fell apart at say 100 kmh.

The prop shaft drops into the bitumen, really digs into the bitumen, lifts the back end of vehicle about 2 metres in the air. Vehicle slams to a dead stop, then slams down into the bitumen and snaps yer neck with the whiplash,,,,,,,,,,,,

Scary things cars eh ;)

Still can't figure out why they would put a prop shaft on the opposite way to which it was originally fitted, I'd say someone stuffed up and they won't admit it. An apprentice perhaps??

The reason that the sliding joint is at the front is that there is far less radial movement i.e up and down movement at the gearbox end than there is at the rear axle end. That "up 'n down" movement would wear the splines far more quickly than if the splines were at the front, near the gearbox. The spline, if it were at the rear would suffering torque AND shear forces. It would break pretty quickly.

Watch what happens to the nose of a differentail housing when you accelerate from a standing start. It dips as the axle transmits forward motion to the vehicle chassis. That's where the spline arrangemnt would be worn out in no time. Whereas, the gearbox end hardly moves at all.

Wait fer the flack, Bilbo,,,,,,,,

Bilbo

Richard and Bilbo make good points.

I know a bloke who snapped a front uni on a bombed HQ at high speed near Wikepin. The tailshaft acted as a pole vault and put him into the bush. Not good at all.

I had the rear uni joint bolts snap under full squirt from a standing start on my 360 Chrysler once and those tail shafts sure bounce around let me give you the tip.