172 front wipers help needed asap

[cal]

just removed front wiper arms and mechanism to give them a good clean and lube as they were really creaky/noisy.

on putting the mechanism back in, everthing seemed ok, all noises had stopped and was moving smoothly.

the problem is once ive connected the wiper arms back to the mech. one of the rods on the mech is knocking/catching on a metal stud on body work every time it goes round. As though pressure from wipers and wiper arms is putting to much load on mechanism and it is moving too much.

if anyone has any ideas why this happening, and some advice on how to rectify would be much appreciated.

looks as though might rain

cheers

 

[cal]

i've heard that that wiper motor/mechanism is suppose to attach to the metal stud on body?

if anyone knows correct procedure for putting motor/mechanism back on the car would be great.

I have put the 3 bolts back in but the whole thing seems to be out of position hence knocking/movement when operating?