Vibration at 55mph+ from Driveshaft

[Norunec]

Right. I'm a bit new to this Forum, so apologies in advance etc.

I've got a vibration that kicks in at about 55mph under aceleration.

It isn't the wheels, had them re-balanced, tyres have been checked.

I've ordered a new (OE quality) driveshaft, which as I type this, has just arrived!

I am going to swap it out but, does anyone know the part number for the oil seal?

And has anyone ever encountered a worn diff bearing/internal spline housing? The shaft feels like there's some movement!

Finally, when I take the wheel hub nut off, which has a punched in section, doe sit have to be replaced with a new one?

Any help gratefully received! Any other tips to doing this job also!

Cheers

Nick

[Konrad C]

Nick, the hub nut can be used again, but it may be wise to change it. I re-used my hub nut when changing a wheel bearing, because the one supplied in the third party kit was different.

I cannot say much about the diff bearing/internal spline, but that could be the cause of the vibration! With the car up in the air on a ramp and wheels off, put the car into top gear and get the speedo to show 60 mph. From underneath the driveshaft may show a wobble near the diff. A safer way is to check both sides to see if the play is the same. 

You don't say what engine your car has in profile, because the diesel and 2 litre petrol has an intermediate support bearing for the offside whilst the 1.8 and smaller petrol does not. The seals are different too! The follow are details for the 3 most common: - 

1.8 vvti - http://www.japan-parts.eu/toyota/eu/2004/avensis/zzt251r-almekw/3_273550_054_223W/powertrain-chassis/4302_front-drive-shaft

2 litre petrol -  http://www.japan-parts.eu/toyota/eu/2004/avensis/azt250l-awmehw/3_273550_012_223W/powertrain-chassis/4302_front-drive-shaft

Diesel version - http://www.japan-parts.eu/toyota/eu/2004/avensis/cdt250r-almeyw/3_273550_083_223W/powertrain-chassis/4302_front-drive-shaft

Click on the part number to get the details.

 

[Norunec]

Hi Konrad,

got the hub nut off, by using my talented local garage guy! He broke 2 1/2" bars doing it. 

And now, it's solved!

btw it's a d-cat. 

Unfortunately, it's started jumping out of 5th gear. And I replaced the gear/synchro ring about two months ago. 

Anybody got any ideas? New gearbox? New cables? Mounts?

It only takes a small amount of pressure to hold it in gear but I'm starting to lose the will to keep this car....

[Konrad C]

Well done with the drive shaft Nick. 

Unlucky with the 5th gear.

Maybe you can get another gearbox, but it depends on cost and if secondhand, condition.