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240 "81 driveshaft/axle question

Hi,

I have a 240 Gl 2.1 carburettor engine with 4 speed +OD. It ran 205.000 Km's. Now my question:

When I accelerate in first gear the rear axle vibrates. This happens only when I acceperate from first gear, not in the other possitions.

The rear axles needle-bearing has once been replaced some 40k kms ago by the previous owner (did it not himself), there is no play in the other bearings. The rear axle bearing has been greased regulary on the nipple during service.

A "specialised in old" Volvo garage say's that all 240's have that same problem and there is nothing one can do about is but exept replace the rear axle for a new one (!) which is of course no option.

I've checked all rubbers and they are fine. What could this be, the differentrial, or something else. Both the OD and diff donnot leak any oil.

Please advise.

Thanks,

Martijn The Netherlands

144 244 262C C180 Merc
Reply to
Martijn
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Betcha....U-Joints!

Martijn wrote:

Reply to
Steve Rogers

Steve,

"U-Joints" where are they situated under the car.

Cheers,

Martijn

Reply to
Martijn

Martijn

The Universal couplings, allow the drive (prop) shaft to change angle, and flex in two places, one is just behind the gearbox, the other is just behind a support bearing further back the shaft. Check to see they rotate freely, solidly, there should be no 'clunk' when you rotate the propshaft to and fro.

Ken

The Universal couplings, allow the drive (prop) shaft to change angle, and flex in two places, one is just behind the gearbox, the other is just behind a support bearing further back the shaft. Check to see they rotate freely, solidly, there should be no 'clunk' when you rotate the propshaft to and fro.

Ken

Reply to
Ken Phillips (UK)

Ken,

The garage I consulted said that these two are OK. The prop shaft runs freely an I I trun it manuallyb there is no clunk. This garage also has a lot of Amazon's in service so they should know what they are talking about. Any more tips. I changed all 4 shockbreakers myself 3 months ago, so they are fine as well.

Cheers,

Martijn

Reply to
Martijn

With the problem happening in first, and first gear acceleration usually being a fairly high torque situation, the only other thing I can think of is a suspect engine or gearbox mount, or possibly the exhaust vibrating against the underside of the car, where the pipe passes over the axle (this is quite likely especially if the system is warm, as the pipe lengthens, and rises upwards as slack in the backbox rubbers is taken up. There is a specific alignment that the back box should be set to for this not to happen, but it be difficult to remedy. I once got very bad vibration problem, which took ages to trace, caused by a badly installed (off centre, someone had butchered and bodged it, thinking it wouldn't go on properly, they were wrong) clutch pressure plate, which I inherited with the purchase of the car, but I would have thought this is very rare.

Ken

Reply to
Ken Phillips (UK)

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