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Technical Cinq sporting wiper motor crank removal

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Technical Cinq sporting wiper motor crank removal

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Wolstan Dixie

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I need a new motor, but first I have to get the old one out.


How do I remove the crank from the spindle? I can remove the nut and washer, but it won't come off. Is the crank arm threaded too, or do I just need to exert more pulling force? If the crank is threaded, and I try to unscrew it, won't I damage the nylon worm gear?
 
It's a tapered shaft and they come off with some force. Gloves might help. I usually fold the arms upwards and rock them back and forth a lot of times. I think there is a special puller tool u can buy but i have never needed one.
 
Thanks, but I think you have mis-understood; perhaps I was not clear enough.


I do not mean the wipers; I mean the crank on the drive spindle of the motor itself, which by linkages actuate the wipers. It is a flat rectangular bar with a ball-and-socket connection to the linkage at one end and the motor output shaft through the other end with a securing nut.


It is extremely difficult to access - you have to remove two panels, unbolt the linkage anchor, remove the wipers completely and them manoeuvre the motor/linkage assembly out sideways through a narrow gap. Only people with a shorted motor would ever need to do this.
 
Wolstan Dixie said:
Thanks, but I think you have mis-understood; perhaps I was not clear enough.


I do not mean the wipers; I mean the crank on the drive spindle of the motor itself, which by linkages actuate the wipers. It is a flat rectangular bar with a ball-and-socket connection to the linkage at one end and the motor output shaft through the other end with a securing nut.


It is extremely difficult to access - you have to remove two panels, unbolt the linkage anchor, remove the wipers completely and them manoeuvre the motor/linkage assembly out sideways through a narrow gap. Only people with a shorted motor would ever need to do this.
Click to expand...

I think Purf was trying to suggest that to get the bit off that you need off, you can use the extra leverage of the wiper arms to wiggle it off. It is tapered and has a slight spline so it is 'just wiggle'.

Cheers

D
 
Thanks; but oh dear - it seems I am STILL not being clear enough.


I am talking about the motor - any amount of levering the wiper blades would be pointless - no force would be transmitted to the motor crank which is 50cm away through two ball joints, and in any case I have already removed the wipers without problem.


I do not think the motor spindle is tapered, or splined as far as I can see - the crank is only about 2mm thick.


Only someone who has removed the motor to replace it would understand what I am talking about - it is not visible and is not something you would ordinarily have to mess with.
 
Thus: I have the nut off the spindle.


This is Fiat parts 9944295 and 9944296


The crank won't fit through the hole, and so can't be manoeuvred out - it has to be removed from the spindle. The other end of the spindle is the motor nylon worm gear which obviously could be damaged by any force.
 

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Thanks - that's all the information I needed - with a pipe-wrench I wiggled it off quite easily. However, not easy to see when it is assembled, which is why I thought it might be threaded.


Thanks again everyone
 
I did think you were on about the wiper blades sorry. Good work. This kind of thing might be more common now you can't just go down to the local scrappy to get the full wiper mechanisms.. not so many centos around anymore
 
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