I have removed the retaining nut and washer on the Drivers side windscreen wiper arm mechanism and need to know if the assembly is on a spline as I am having difficulty removing the arm to replace the cover assembly to the lower part of the windscreen. yours faithfully Ray Robinson
problem removing wiper arm on 1995 BMW 740iL
by Robbo in Granbury, TX on October 16, 2009
ANSWER by lawrenceg , October 21, 2009
The arm is often very tight and needs to be "persuaded" to come off. Try tapping on the shaft lightly with a plastic mallet, or try jiggling the arm of the wiper. It's hard to describe the subtle things you need to do, but I hope this helps. Let me know if you get it removed.
ANSWER by Visitor , December 07, 2010
i struggled with one today on a 2000 740il for about 2 hours before going to my local autoparts store and renting a small gear puller. Got it off in 5 mins.