windscreen wiper arm problem

[ferlin]

The windscreen wiper arm has started slipping on the shaft of the motor on my 1985 350i. Can somebody tell me if the shaft and arm is supposed to be splined or is it just on a taper? Also what car is the arm off just in case I cannot tighten it up enough to stop it slipping.

[Wedg1e]

Usually splined. However this IS a TVR, remember... it could be dovetailed, cross-drilled and pinned, mortice-and-tenoned, superglued, tapered (Morse, R8, International, Jacobs, Jarno), tongue-and-grooved, keyed (square or Woodruff), biscuit-jointed, Velcro'd, pinch-bolted, dowelled, staked or simply held on by the will of Allah...

[Gandalf]

Wedg1e said:

Usually splined. However this IS a TVR, remember... it could be dovetailed, cross-drilled and pinned, mortice-and-tenoned, superglued, tapered (Morse, R8, International, Jacobs, Jarno), tongue-and-grooved, keyed (square or Woodruff), biscuit-jointed, Velcro'd, pinch-bolted, dowelled, staked or simply held on by the will of Allah...

[schimg]

Be good to know what these are mostly off though cos I wouldn't mind changing mine ...if it ain't too much hassle and too costly...

[tempus]

I think some are fiesta rear arms,motorcraft ewa345,but a bit of old turkey foil wrapped round the taper will keep it going for a few years.Tempus

[pwd95]

Mine's a stripped spline...I just tighten the nut up a bit harder, works fine

[ferlin]

pwd95 said:

Mine's a stripped spline...I just tighten the nut up a bit harder, works fine

Ive just cleaned it up and done the same. Lets hope it holds. If not might have to resort to one of the super bodges mentioned below