From:	Horst Apfelthaler
Sent:	Montag, 23. November 1998 09:01
To:	'BMW320i/323i-Digest'
Subject:	Why are my wipers so slooooow? - Solution
Hi Digesters,

maybe this topic has already been discussed, but a lot of E21 drivers in cold areas
have seen this problem. - In winter the wipers will move very slooooow.

Problem:
After some years the grease in the wiper motors gearbox tends to be stiff and act like some glue.
In this case the motor need a lot of force to move the 2" gear and will slow down.

Solution:
- Remove the the motor (3 screws, 1 for the lever).
- Open the gearbox by removing two 3mm screws and open  the 4 rivets by drilling them up 
  with an 8mm drill.
- drill the 3 holes beside the rivets with 2.5mm (there is already a hole, but not deap enough.
- drill 3 3mm threads in the new holes 
- wash and clean the gearbox with some and grease removing fluids.
- lubricate the gearbox with grease (you can mix it with oil to make it thinner)
- use less grease as it was from factory!!!  
- reassamble the covers for the gearbox
- reinstall the wiper motor

All this takes 1 hour with the result that the wipers speed up to "like new" specifications.

Regards

Horst from Austria

'77 316
'80 323i Project car with eta power
'83 315 - reworked wiper motor
'89 320iC
'95 A4 Tdi