Thread: Persistent driveline vibration solved

For a while now I have been chasing an annoying driveline vibration in my 4 speed 110, which was worst at about 80km/h.
Removed the front drive shaft, vibration still there.
Straightened, balanced and finally replaced the rear drive shaft, still there.

I then tested it without the handrake drum in place and the problem went away. It turns out that the handbrake drum was out of round with about 2mm of runout. How this happened I dont know, I can only put it down to off road impact damage.

After replacing the handbrake drum with a second hand one, all the vibration is gone. Its worth considering as a suspect if anyone has similar issues.

Had the same problem.. removal and refitting the handbrake drum fixed it! May have been the way it was put on...