Electric mirror not working properly
03-22-2009, 12:30 AM
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Electric mirror not working properly
THe electric mirror on the passenger side is no longer working properly. It moves side to side but not up and down. I can hear it trying to move but it is stuck.
I pulled the glass off. Then removed the three bolts, unplugged the connector. How do you get to the motor and mechanism???
Thanks
I pulled the glass off. Then removed the three bolts, unplugged the connector. How do you get to the motor and mechanism???
Thanks
03-23-2009, 04:57 AM
#5
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Hi Guys,
It can be done but takes some time and care.
You first have to remove the aluminium plate that the mirror clips into. Do this by carefully drilling out the four rivets in the centre.
Then you can stretch the rubber boot covering the motor aside to reach the mounting screws for the motor.
When you take it apart, you will fing a small single solenoid inside on the later motors, or two solenoids on the earlier motors. There is a very light spring around the solenoid centre shaft - this is the part that usually breaks. I replaced mine with a cut down spring from a ball point pen.
Put it all back together and re rivet the plate on to the motor mounts and you are good to go.
BTW, if you have an older version with the square motor mounting, take care when you dismantle it - there is a lot of string and pulleys inside the motor!!
Regards
Edit: Sorry - to clarify - If you have the older style mirror with the square plastic mount for the mirror, there are two motors inside, one for up/down and one for left/right, all driven by pulleys and string. If this is not working then chances are that one of the motors has burnt out, - only option is to replace the defective motor or the entire unit.
If you have the newer style mirror with the round mounting base, there is only one motor inside - the up/down, left/right function is achieved by the solenoid activating a small plastic cam, It is the small spring in this solenoid that usually breaks.
It can be done but takes some time and care.
You first have to remove the aluminium plate that the mirror clips into. Do this by carefully drilling out the four rivets in the centre.
Then you can stretch the rubber boot covering the motor aside to reach the mounting screws for the motor.
When you take it apart, you will fing a small single solenoid inside on the later motors, or two solenoids on the earlier motors. There is a very light spring around the solenoid centre shaft - this is the part that usually breaks. I replaced mine with a cut down spring from a ball point pen.
Put it all back together and re rivet the plate on to the motor mounts and you are good to go.
BTW, if you have an older version with the square motor mounting, take care when you dismantle it - there is a lot of string and pulleys inside the motor!!
Regards
Edit: Sorry - to clarify - If you have the older style mirror with the square plastic mount for the mirror, there are two motors inside, one for up/down and one for left/right, all driven by pulleys and string. If this is not working then chances are that one of the motors has burnt out, - only option is to replace the defective motor or the entire unit.
If you have the newer style mirror with the round mounting base, there is only one motor inside - the up/down, left/right function is achieved by the solenoid activating a small plastic cam, It is the small spring in this solenoid that usually breaks.
Last edited by heliflyer; 03-23-2009 at 06:07 AM.
03-23-2009, 01:02 PM
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On an 86 there is only one motor. There is also a solenoid that causes it to change over to drive the other plane. Likely this is not engaging the gearing in one plane correctly. I have not disected one of these to see the physical implementation - but look for some blockage in this movement - cleaning may be all it takes if you are lucky. Try just repeatedly changing the direction switch (and the movement switch) while blasting it with switch cleaner/air/WD40
Alan
Alan
03-23-2009, 08:05 PM
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Hi Guys,
It can be done but takes some time and care.
You first have to remove the aluminium plate that the mirror clips into. Do this by carefully drilling out the four rivets in the centre.
Then you can stretch the rubber boot covering the motor aside to reach the mounting screws for the motor.
When you take it apart, you will fing a small single solenoid inside on the later motors, or two solenoids on the earlier motors. There is a very light spring around the solenoid centre shaft - this is the part that usually breaks. I replaced mine with a cut down spring from a ball point pen.
Put it all back together and re rivet the plate on to the motor mounts and you are good to go.
BTW, if you have an older version with the square motor mounting, take care when you dismantle it - there is a lot of string and pulleys inside the motor!!
Regards
Edit: Sorry - to clarify - If you have the older style mirror with the square plastic mount for the mirror, there are two motors inside, one for up/down and one for left/right, all driven by pulleys and string. If this is not working then chances are that one of the motors has burnt out, - only option is to replace the defective motor or the entire unit.
If you have the newer style mirror with the round mounting base, there is only one motor inside - the up/down, left/right function is achieved by the solenoid activating a small plastic cam, It is the small spring in this solenoid that usually breaks.
It can be done but takes some time and care.
You first have to remove the aluminium plate that the mirror clips into. Do this by carefully drilling out the four rivets in the centre.
Then you can stretch the rubber boot covering the motor aside to reach the mounting screws for the motor.
When you take it apart, you will fing a small single solenoid inside on the later motors, or two solenoids on the earlier motors. There is a very light spring around the solenoid centre shaft - this is the part that usually breaks. I replaced mine with a cut down spring from a ball point pen.
Put it all back together and re rivet the plate on to the motor mounts and you are good to go.
BTW, if you have an older version with the square motor mounting, take care when you dismantle it - there is a lot of string and pulleys inside the motor!!
Regards
Edit: Sorry - to clarify - If you have the older style mirror with the square plastic mount for the mirror, there are two motors inside, one for up/down and one for left/right, all driven by pulleys and string. If this is not working then chances are that one of the motors has burnt out, - only option is to replace the defective motor or the entire unit.
If you have the newer style mirror with the round mounting base, there is only one motor inside - the up/down, left/right function is achieved by the solenoid activating a small plastic cam, It is the small spring in this solenoid that usually breaks.
OK Kevin - I'll let you go first (I am a gentleman, and a coward).
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03-23-2009, 08:49 PM
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I'm confused on Jay's post - as far as I know here is the deal:
Early electric Flag mirrors up to & including '86 have 1 motor and a single solenoid to change planes
- I'm unaware of any with 2 solenoids (why would it have 2 ?)
87-91 Flag have 2 motors (1 for each plane)
92-95 Aeros have 2 motors (1 for each plane)
- 87-95 have functionally equivalent electrics (except no temp sensor in 87-88)
Not sure if any early 928s were delivered with manual only mirrors - possibly. Some were delivered with drivers side mirror only...
Alan
Early electric Flag mirrors up to & including '86 have 1 motor and a single solenoid to change planes
- I'm unaware of any with 2 solenoids (why would it have 2 ?)
87-91 Flag have 2 motors (1 for each plane)
92-95 Aeros have 2 motors (1 for each plane)
- 87-95 have functionally equivalent electrics (except no temp sensor in 87-88)
Not sure if any early 928s were delivered with manual only mirrors - possibly. Some were delivered with drivers side mirror only...
Alan
03-24-2009, 12:20 PM
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Jay,
I'm not sure what you mean by early and late - I was specific to years in my post.
I understand that you think you know this - but I feel I have to clear up several factual errors here - I'm sorry but you are just wrong here...
I have been doing this a long time - I'm not guessing.
So in fact it is exactly as I have stated... I have dismantled Aero mirros and late flag mirrors so I know this for sure - I have repaired aeros and diagnosed many functional issues on them. Late flags= motor mechanisms are the same as aeros (or V-V).
So late models 87-95 indeed have just 2 motors. It is also clear in all the wiring diagrams that there is one motor and one solenoid on all the early mirrors. I have not disected any early flags - though I know the wiring for them and I do have a set to hand...
If you can show different please post the pictures - maybe you are recalling some other model's mirrors - however any configuration beyond either: 2 motors or 1 motor/1 solenoid make no functional sense anyway (e.g. what would they do?)
Alan
I'm not sure what you mean by early and late - I was specific to years in my post.
I understand that you think you know this - but I feel I have to clear up several factual errors here - I'm sorry but you are just wrong here...
I have been doing this a long time - I'm not guessing.
So in fact it is exactly as I have stated... I have dismantled Aero mirros and late flag mirrors so I know this for sure - I have repaired aeros and diagnosed many functional issues on them. Late flags= motor mechanisms are the same as aeros (or V-V).
So late models 87-95 indeed have just 2 motors. It is also clear in all the wiring diagrams that there is one motor and one solenoid on all the early mirrors. I have not disected any early flags - though I know the wiring for them and I do have a set to hand...
If you can show different please post the pictures - maybe you are recalling some other model's mirrors - however any configuration beyond either: 2 motors or 1 motor/1 solenoid make no functional sense anyway (e.g. what would they do?)
Alan
Last edited by Alan; 03-24-2009 at 01:08 PM.
03-24-2009, 01:05 PM
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First the power to the mirror heaters is only active when the rear screen defogger/defroster is active.
Fuse 19 feeds the rear heater relay (I-II ) - either of these could be faulty. The mirror plugs may have fallen off - remove the glass to check. Its also possible the mirror glass & backing was replaced with a non-heated version (plugs would be loose in mirror housing).
Alan
Fuse 19 feeds the rear heater relay (I-II ) - either of these could be faulty. The mirror plugs may have fallen off - remove the glass to check. Its also possible the mirror glass & backing was replaced with a non-heated version (plugs would be loose in mirror housing).
Alan
