Removing rusted/stuck rear wiper arm

[Whammy]

All,

I am trying to remove the rear wiper arm on my '03 4Runner. The arm is unfortunately not even touching the glass. After removing the rusted nut, I cannot pry the arm way from the bolt. Even using a bit of PB blaster does not convince the arm to pop off.

When I pull on the arm, I am pulling the entire motor assembly. I am concerned pulling too hard will damage the motor assembly. I am wondering if others can help me with ideas on how to get the arm off without breaking the motor assembly or anything else.

Thanks!

 

[AuSeeker]

First get a new nut or even better two, put your old nut back on the shaft or if one of the new ones is thicker use it instead to get as much threads in the nut as possible but don't put it all the way on, only put it on about 3/4 of the thickness of the nut so the shaft is short of being flush with the nut so the next step will not damage the shaft, take a hammer and gently tap on the nut/shaft while applying some outward pressure also spray some more PB Blaster on the shaft periodically, the tapping will help lossen the corrosion, keep repeating this process....spray..tap, tap, tap repeatedly, etc until hopefully the arm comes off, just don't get carried away with how hard you tap on the nut to avoid possibly bending the shaft.

You can also try a small puller, they make a small puller designed to pull battery terminals and wiper arms off, it may work for you after trying the above to loosen it up some (you can also gently tap on the end of the puller as you use it) but make sure you have a nut on the shaft as described above so the puller bolt doesn't damage the end of the shaft.

https://www.google.com/search?ei=d1...c.1.64.psy-ab..0.7.290...0i67k1.0.gwFa2q4O6ao

Good luck!

 

[Whammy]

First get a new nut or even better two, put your old nut back on the shaft or if one of the new ones is thicker use it instead to get as much threads in the nut as possible but don't put it all the way on, only put it on about 3/4 of the thickness of the nut so the shaft is short of being flush with the nut so the next step will not damage the shaft, take a hammer and gently tap on the nut/shaft while applying some outward pressure also spray some more PB Blaster on the shaft periodically, the tapping will help lossen the corrosion, keep repeating this process....spray..tap, tap, tap repeatedly, etc until hopefully the arm comes off, just don't get carried away with how hard you tap on the nut to avoid possibly bending the shaft.

You can also try a small puller, they make a small puller designed to pull battery terminals and wiper arms off, it may work for you after trying the above to loosen it up some (you can also gently tap on the end of the puller as you use it) but make sure you have a nut on the shaft as described above so the puller bolt doesn't damage the end of the shaft.

https://www.google.com/search?ei=d1...c.1.64.psy-ab..0.7.290...0i67k1.0.gwFa2q4O6ao

Good luck!

Thanks Skip. I'll try both suggestions and see what happens!

 

[offshorebear]

I had to use a wiper arm puller, a torch, and oil. It came off eventually.

 

[Whammy]

I had to use a wiper arm puller, a torch, and oil. It came off eventually.

Yeah, I'm not going that route.....hopefully.

 

[TechWrench]

Also, I have found that the hinge in the wiper arm has a tendency to rust and stiffen up. This will keep the internal spring from holding the wiper blade against the glass. I have solved this issue by using PB blaster or Gibbs to loosen rust in hinge and work the hinge until is frees up. This will usually get wiper to work on glass again.