Prop shaft centre bearing… how much movement should there be?

[Yetti2005]

Hi, I’ve been hearing strange sound (bit like when you have a bulge in a tyre) that matches road speed. Checked all wheels, done my best to check wheel bearings, then checked prop shaft centre bearing. There is some vertical movement in the centre bearing, maybe 5mm up and down, but I’m not sure if this is normal and also if this could cause the noise I’m hearing. Any help would be much appreciated.

Sponsored

 

[GR11M]

When you put the clutch in does the sound drop off ?

 

[Yetti2005]

It’s an auto mate (sorry, forgot to state that)

 

[Gregs24]

Front tyre inner shoulders?

Mine were cupped by 18k miles and made a lot of noise.

 

[Yetti2005]

Front tyre inner shoulders?

Mine were cupped by 18k miles and made a lot of noise.

cheers. I’ve checked them and they appear ok. I’m going to put the spare on and see if there’s any difference though

 

[Gregs24]

cheers. I’ve checked them and they appear ok. I’m going to put the spare on and see if there’s any difference though

Changing one will not really help. Easy enough to feel on the inner shoulder where you will feel a rippled tread depth

 

[Yetti2005]

Changing one will not really help. Easy enough to feel on the inner shoulder where you will feel a rippled tread depth

Thanks. Yes I did that previously and can’t feel or see anything wrong with the tyres. Tread is getting close to legal limit so will have to change them soon. Maybe that will help.

my real concern is how much movement there should be on the prop shaft centre bearing.
Thanks

 

[Yetti2005]

Forgot to update… changed front tyres… problem solved. Thanks for all the help!

 

[GR11M]

Why do we call it a prop shaft and not a drive shaft, isn't prop short for propeller ?

 

[Gregs24]

Why do we call it a prop shaft and not a drive shaft, isn't prop short for propeller ?

Prop shaft to the diff, drive shafts to the wheels?

I suppose prop shaft (propeller shaft) most mimics the propeller shaft of a boat.

 

[MarkM]

Prop shaft to the diff, drive shafts to the wheels?

That would be my take also

 

[Yetti2005]

Prop shaft to the diff, drive shafts to the wheels?

I suppose prop shaft (propeller shaft) most mimics the propeller shaft of a boat.

Yeah, drive shafts drive the wheels and prop shaft drives the diff. Guess it’s related to ships/boats like you say to differentiate between the 2 different shafts. Pretty sure this is just a UK thing though and USA and others use drive shaft for prop shaft… don’t know what they call the drive shaft… maybe drive axle?

 

[GR11M]

US Drive shaft and half shafts
UK Prop shaft and drive shafts

 

[Gloucesternige]

In Landrover language we say prop shafts and half shafts..

As far as I'm concerned, in the UK a half shaft is inside a live axle, Driveshaft is as per our S550's.

Sponsored