| Author | Message | ||
     Robert C Unregistered guest Posted From: 121.45.92.143 |
Hi, Over the past few months, the LHR window has become temperamental, but has now stopped working completely. Yesterday I thought I might have a look. The motor was seized. I removed the window assembly and dismantled the motor, cleaned it all up, and reassembled. As I refitted the assembly, I shorted a wire to earth momentarily. There is now no voltage to that corner. All other windows work. So, a few questions. Are the windows fused individually? Are there thermal cut outs? Any help appreciated. Regards Robert (Message approved by david_gore) | ||
| John Kilkenny Prolific User Username: john_kilkenny Post Number: 156 Registered: 6-2005 |
Robert, The window motors are individually fused. Drivers side front F15 Drivers side rear F16 Pass side Front F17 Pass side rear F18 John | ||
| Robert C Unregistered guest Posted From: 121.45.92.143 |
Thank you! Unfortunately the motor now goes down, but not up. The relay clicks, though. I understand these are horrendously expensive - is there an alternative? (Message approved by david_gore) | ||
| Paul Yorke Grand Master Username: paul_yorke Post Number: 987 Registered: 6-2006 |
Robert, Take it out again and check that all the soldered connections are ok and that the points are ok on the relays. If you can't resuscitate it I would be fit a new mechanism to the front door and use that good motor in the rear mechanism. This is a much easier and cheaper and more reliable way of repairing your car. We have been doing these conversions for 20+ years and selling the parts for owners for DIY conversions. No complaints yet and doesn't take too much skill. | ||
| John Kilkenny Prolific User Username: john_kilkenny Post Number: 157 Registered: 6-2005 |
Robert, Before pulling everything apart if you are handy with a meter use this diagram to check for broken or faulty connections. I think it is relevant for your car. John  | ||
| Paul Yorke Grand Master Username: paul_yorke Post Number: 988 Registered: 6-2006 |
That looks like a square type motor wiring diagram not the piper type . | ||
| Robert C Unregistered guest Posted From: 121.45.92.143 |
Hi Paul and John, Thanks - how much is the kit? That diagram doesn't match what I have. The solenoid on the motor clicks, but the motor doesn't function. As it is the same winding, presumably if the coil were ruined, it wouldn't work in either direction? (Message approved by david_gore) | ||
| Paul Yorke Grand Master Username: paul_yorke Post Number: 989 Registered: 6-2006 |
hi Robert , I thought I posted that the wiring diagram looks like a square motor system . It's not a kit as such but is fairly straight forward to fit . £175 for a used serviced mechanism . Did you check the relay points are making contact ? They can close but have no continuity . Piper motor rebuilds are about £500. Also check that the limit switches are working . A kit to change your mechanism to a modern reliable cheaper motor is also available but are about £500 again . | ||
| John Kilkenny Prolific User Username: john_kilkenny Post Number: 158 Registered: 6-2005 |
Robert, Sorry about the diagram, I assumed a 1967 car (what is the serial no ?)would use the original circuit or a very similar one. Does your motor change direction with separate field windings or by reversing a single field winding. If the latter I agree that if it works one way it should work the other. Have you checked the motor by connecting it directly to 12V ? You could also check the relay by substituting one from a good door. Does the fault occur with both the LHR switch and the driver's switch ? |
