J style wipers

[fnny6770]

I bought the Dorman 42631 wiper arm to use J style wipers as mentioned in a previous post for my 1980 GMC, I can't get them on all the way to lock them in place, any suggestions?
Or maybe they will be ok?
Thank you!

 

[H2OnSnow]

There is a locking catch on them. It doesn't pull back far enough to go all the way on. I used a Dremel to whittle it back a bit, then it worked fine.

 

[fnny6770]

Here is the locking mechanism on these wipers, and it appears that no part of it seems to be hitting that I can tell, could you possibly show me where yours was hitting?
It may just be where this mounts to the wiper mechanism is a little thicker.

 

[fnny6770]

If you look down where the arrow points, you can see where possibly these tapered is locking up

 

[H2OnSnow]

Yours doesn't seem to have the problem that mine had.

 

[awar]

The J style are the way to go, I remember loosing a wiper blade on my 79 towing my trailer in a raging rainstorm. Of course it was the driver’s side.

 

[fnny6770]

It appears to me that the taper, as it goes deeper into the wiper arm gets narrower than the wiper motor will allow. I just wanted to know if anyone else experienced this?