P38 2.5 how to remove alternator

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nisbeam

Active Member
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201
Location
down in Cornwall
How is it done? RAVE says first remove the air con drive belt - is this necessary? surely loosening the alternator belt tensioner would to the trick.
And where is the second bolt? you can't see on the RAVE diagram, is it underneath? I ask because I have removed the top one and almost removed what I hope is the lower one but the alternator seems firmly stuck in place and doesn't move at all. All advice gratefully received. :eek:
 
nisbeam said:
How is it done? RAVE says first remove the air con drive belt - is this necessary? surely loosening the alternator belt tensioner would to the trick.
And where is the second bolt? you can't see on the RAVE diagram, is it underneath? I ask because I have removed the top one and almost removed what I hope is the lower one but the alternator seems firmly stuck in place and doesn't move at all. All advice gratefully received. :eek:
Click to expand...

No need to remove the aircon belt it does nothing for the alternator. The bottom bolt pulls up a sliding boss to locate alternator on flange. This boss grips flange so if you wriggle alternator a little it should come off.
 
Thanks wammers, the alternator is now looser. But following RAVE, to lever the tensioner does not have much effect, so I can't get enough slack to get the belt off the alternator to remove it. Would it be easier to remove the tensioner bolt that attaches it to the damper (the one at the bottom of the damper) or will I not be able to get it back in again? just wonder the best way to go about it. Thanks again.
 
nisbeam said:
Thanks wammers, the alternator is now looser. But following RAVE, to lever the tensioner does not have much effect, so I can't get enough slack to get the belt off the alternator to remove it. Would it be easier to remove the tensioner bolt that attaches it to the damper (the one at the bottom of the damper) or will I not be able to get it back in again? just wonder the best way to go about it. Thanks again.
Click to expand...

You should be able to lever the tensioner over centre to give enough slack not a lot but enough. Then loop belt off pulley.
 
Well apart from being filthy & clogged with years of muck, it was making strange noises. These were intermittent and could be heard with the ignition on but before starting the engine. Sometimes a loud buzzing, other times quiet. And also occasion clicks that sounded similar to a relay switching, and most worryingly occasional loud "shorting out" type of noises, loud cracking and fizzing noises.
I also still have intermittent electrical cut-out which stops the engine, so I want to be sure the alternator is not the cause, it sounds as though it might be.:confused:

Happy to fix myself if I can but not sure what can be done. I could buy some electrical cleaner, but can the brushes etc. be changed as well ?
 
nisbeam said:
Well apart from being filthy & clogged with years of muck, it was making strange noises. These were intermittent and could be heard with the ignition on but before starting the engine. Sometimes a loud buzzing, other times quiet. And also occasion clicks that sounded similar to a relay switching, and most worryingly occasional loud "shorting out" type of noises, loud cracking and fizzing noises.
I also still have intermittent electrical cut-out which stops the engine, so I want to be sure the alternator is not the cause, it sounds as though it might be.:confused:

Happy to fix myself if I can but not sure what can be done. I could buy some electrical cleaner, but can the brushes etc. be changed as well ?
Click to expand...

With that list it maybe better to get it to a repair shop then. If it just a matter of low output a set of brushes and control box maybe would have done the trick. Depending on how badly worn pickup rings are of course. I sometimes forget that i have a lathe so can clean rotor rings up, but of course not everyone has that facility. You can get a new control box and brushes for around £20.00 or so. Changing the bearings is pretty easy if you have the gear to do it all with. I have so not a problem, as i say i sometimes forget not everyone has all the tools.
 
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