andreb

Crank pulley nut and wave washer needed, M10 engine

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So I'm working on the '02 the other night in preparation for he upcoming Historics at Laguna Seca. I'm ditching my old AC fan I've been using for a proper/modern fan that sits closer to the radiator. I pulled the radiator out and will working around the alternator I notice is spun rather easy. Hmm? The belt is loose!? Yes because the adjuster bracket is broke!! So while I'm removing all that and I notice the crank pulley is spinning very easy as well, like its loose... Turns out it is!

 

Not sure what happened or how long ago as the car has been parked for a while. I rebuilt the motor several years ago and pretty sure i tightened it then, you can even tell I used Loctite. The Woodruff key is hammered, the pulley looks bad as well. No problem I thought; I'll pull the pulley, nut and washer - order new and then replace the seal. Problem is, the nut and washer are NLA!

 

So if anyone happens to have a ~new~ crank pulley nut (07 11 9 921 656) and washer (07 11 9 932 183) I'll pay top dollar. They are NLA from BMW. I could ultimately source a regular nut and cut it down I suppose, not sure about the wave washer. It would be nice to find new. Its been years since I needed parts for this old car.

 

Who is the best source for hard to find vintage BMW parts these days? I'm just amazed you can't get such a basic part anymore.

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We have some coming in but unfortunately it is not going to meet your deadline. Let me know if you don't find something in the meantime.

 

Max

 

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Plenty of places to get metric fasteners online. Here's a few leads:

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07119921656
M20 X 1.5

I believe this is a half-height nut (half nut, thin nut, jam nut)

http://www.mcmaster.com/#hex-nuts/=13ojt3q

https://www.nutty.com/M20-X-15-Metric-Hex-Nut-Fine-Pitch_p_9388.html

http://www.automationdirect.com/adc/Shopping/Catalog/Pneumatic_Components/Pneumatic_Air_Cylinders/ISO_15552_Air_Cylinders_(G-Series)/GN-M20-15

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07119932183
B20 wave washer
(Hardened Spring Steel DIN 137 Spring Washer)

http://www.mcmaster.com/#standard-washers/=13ojutl
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Thanks for the replies everyone. I should have looked at McMaster Carr, doh! I just didn't expect such basic parts to be NLA, been a while since I've done anything on this old car.

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