I’m having a hard time trying to figure out what is up with my wiper arm. As you can see the angle of the blade is too steep and is causing it to sometimes catch on itself. It almost as if the lower arm is too long? If I lift the blade up 3 inches it pulls the arm to the position were it should be.
Remove the wiper arm.
Turn the motor on and shut it off so it is in park position.
Take a sharp pick and dig the aluminium out of the spindle splines.
Align the arm in rest position and tighten it down.
When the arm comes loose the splines on the spindle chew the mounting point of the arm filling the splines with aluminium so the arm has no bite to the spindle which causes it to slip. From the last picture those splines are gunked up.
Doing this should fix the problem, I've done it many times on all makes of cars.
How high up the blade sits on the windshield. Some cars the blade hidden and other cars have a lot of the blade is exposed. And I'd like to see with the hood down and see how much space is between the hood and where the arm gets screws down.
I bought blades refills by Amco I think it to tall and is causes it to lift the arm up and catches as it goes across. I ordered a blade from a Lotus parts seller ($80) so at least I’ll know I have one perfect piece to the puzzle soon.
I ended up tracking down a new wiper arm but the wrong style was shipped. The lower arm on this one has this nub where mine should have a ring.
Lucky they had correct arm with the ring. What is interesting is the mounting holes on both arms don’t have any spines. They are totally smooth? I spoke to a Lotus parts vendor and they said when it get tighten down it makes its own groves and they are called “witness marks”.
The new arm works and doesn’t hit the hood. The trick was to put a pin in it to straighten the arm out and then tighten it down and removed the pin and it worked perfect. Since the previous owner had put a key in it to stop it from slipping the hole was to big so when it was tighten down it wasn’t straight. So when the arm went across the windshield lower arm would catch on itself do to the angle.