Advice on wiper mechanism
Discussion
Yes it's very likely the case that someone swapped the wires over due to a tight mechanism
If your mechanism is of the rack and wheelboxes type which I'm almost certain it is, here's a copy and paste with some info from a past post of mine
To be sure all is good you will need to disconnect the rack from the wiper motor gear and pull it out of the tubing that it feeds through to the wheel-boxes, you can now make sure the rack isn't stiff and if it is it will need replacing (Grease The Rack), with the rack out you will also be able to check that the wheel-boxes are free and if not you will need to lubricate or replace them
***Before you remove the rack, mark the position of the wheel-boxes, by marking the wheel-boxes positions you will be able to turn them 180 degrees so that new wheel-box teeth will then be in contact with the rack and not the possible worn teeth that are now in contact with the rack. Obviously this is assuming the wheel-boxes positions haven't been altered in the past****
Once the above work has been completed, with a good wiper motor the wipers will work as they did when all was new
If your mechanism is of the rack and wheelboxes type which I'm almost certain it is, here's a copy and paste with some info from a past post of mine
To be sure all is good you will need to disconnect the rack from the wiper motor gear and pull it out of the tubing that it feeds through to the wheel-boxes, you can now make sure the rack isn't stiff and if it is it will need replacing (Grease The Rack), with the rack out you will also be able to check that the wheel-boxes are free and if not you will need to lubricate or replace them
***Before you remove the rack, mark the position of the wheel-boxes, by marking the wheel-boxes positions you will be able to turn them 180 degrees so that new wheel-box teeth will then be in contact with the rack and not the possible worn teeth that are now in contact with the rack. Obviously this is assuming the wheel-boxes positions haven't been altered in the past****
Once the above work has been completed, with a good wiper motor the wipers will work as they did when all was new
Edited by Penelope Stopit on Tuesday 1st January 16:24
Don't go for a new motor until you have dismantled your motor and checked to see if it's been overheating and burning the armature windings
If you've never dismantled a Lucas wiper motor see this https://www.youtube.com/watch?v=f4hbhPKU_ww
Once you have the gear out of the motor as shown in the above Youtube vid, undo and remove the 2 bolts that go through the motor barrel into the alloy gear housing, now while holding the wormed end of the armature in place to stop it from pulling out with the barrel you can pull the barrel off, remove the armature and check it, the brushes and bushes
If you've never dismantled a Lucas wiper motor see this https://www.youtube.com/watch?v=f4hbhPKU_ww
Once you have the gear out of the motor as shown in the above Youtube vid, undo and remove the 2 bolts that go through the motor barrel into the alloy gear housing, now while holding the wormed end of the armature in place to stop it from pulling out with the barrel you can pull the barrel off, remove the armature and check it, the brushes and bushes
- **Be careful not to lose the ball bearing that is in the end of the armature shaft opposite to the worm end****
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