Have you a loose nut around you?


Peter Beadle relates a cautionary tale.





































Posted: 24.9.10
Have you a loose nut?
I have owned and driven various MGB, C & V8s in my time ever since the early days of working at University Motors in Epsom in the 70s. At first I would always read the car's handbook, but these days it's second nature, I have "been there, done that" . . . so many times. This August I recommissioned my MGBGTV8 after 9 months of standing Idle
in readiness for the September V8 Cambridgeshire Tour.
Before the MOT I treated it to two new front tyres from a local specialist. I then made a few short trips around Gloucester before the Cambridge Weekend (approximately 100 miles) then loaded up the car and headed for Newmarket. A great weekend was had by all and our car covered 500 plus miles faultlessly.
This week I used the car to go to thanksgiving service for Bill Wallis at Knowle. A nice hours drive, each way up and down the M5 and M42 cruising at a steady 70/80mph and like all MGBs you often get a slight vibration through the steering at about 78. But on the way home the unthinkable happened, I had been staying ahead of a BMW for about 10 to 15 miles
and we were making "good time" when suddenly the light vibration on the steering wheel turned into a much heavier body vibration. At first I put it down to "road surface", but soon realised it was something else. The front prop-shaft universal joint was also discounted as I put the car into neutral and the judder was still there. I turned on the hazards and let the BMW overtake. Fearing it might be the brake caliper or brake disc disintegrating,
I coasted for approximately a mile to a standstill on the hard shoulder, the judder getting worse as we slowed down.
Once out of the car "The Problem" was obvious, the nearside front wheel now had only three wheelnuts! One stud had sheared and the three remaining nuts were extremely loose, hanging on by only a few threads! All the remaining wheelnuts were re tightened and we limped home at a steady 50mph.
So apart from Brown Trousers, a missing wheelnut and a sheared wheelstud we are safe. I don't blame the tyre specialist, I blame myself . . . .
in not re-torquing and checking my wheelnuts as per the handbook. I know it didn't happen until 600 plus miles after the tyres were changed and I put it down to the continuous 15 mile high speed vibration causing the already loose nuts to slowly loosen off until a critical condition was reached. Let's hope that others will learn from this old fools mistakes. Happy Safe Motoring.
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