Wiper arm bearing failure
#1
MBWorld Fanatic!
Thread Starter
Wiper arm bearing failure
So, yesterday afternoon I was making the 2.5 hours drive home from a client in the rain, when my wipers started making a knocking sound with each actuation. Eventually, the passenger side right-most link detached and the wipers were unusable.
Fortunately, I use RainX washer fluid, so I could continue to drive the remaining distance in the rain with relatively good visibility.
Anyway, it was apparent when I got home that there was a failure of the connection of the link and some piece was missing because when I fit them back together there was a 1/8" gap all the way around. The dealer was able to order be a new arm for this morning, so I'll be right as rain again in a couple hours.
Upon closer examination after pulling the arm off, the part that failed is actually a ball bearing - the inner and outer races were still seated in their respective locations, but the ***** were gone. It makes me wonder if MB was the victim of counterfeit bearings also.
Fortunately, I use RainX washer fluid, so I could continue to drive the remaining distance in the rain with relatively good visibility.
Anyway, it was apparent when I got home that there was a failure of the connection of the link and some piece was missing because when I fit them back together there was a 1/8" gap all the way around. The dealer was able to order be a new arm for this morning, so I'll be right as rain again in a couple hours.
Upon closer examination after pulling the arm off, the part that failed is actually a ball bearing - the inner and outer races were still seated in their respective locations, but the ***** were gone. It makes me wonder if MB was the victim of counterfeit bearings also.
#4
MBWorld Fanatic!
Thread Starter
It wasn't a big deal really, the replacement wiper arm came to about $150CAD after tax. Such a waste to throw out the entire old wiper arm, but it looks like a purpose-built bearing, so it's not just a matter of removing the old one and pressing in a new one. As well, it looks like it's swaged in place in the idler arm. Drilling out the old one, sourcing a bearing, fabbing-up a pin and attachment method; in the end it's just easier to replace the arm than to try and fix it.