E9 Alternator
- Thread starter Beemer70
- Start date
Where is HK? Is that Hong Kong or somewhere in Kansas?
If you are able to find a shop to rebuild it, I'd do that first. Bay is always buyer beware.
Bosch makes an internally regulated alternator, I do not have a part number.
If you are able to find a shop to rebuild it, I'd do that first. Bay is always buyer beware.
Bosch makes an internally regulated alternator, I do not have a part number.
The place I use is actually a " Starter motor rebuild shop " , they also do alternators.
If its not making noise but failing to produce 13.5V+, just
replace the voltage regulator for about $40. The brushes wear out.
swapping in a new regulator is easier work than r&r'ing the alternator itself.
replace the voltage regulator for about $40. The brushes wear out.
swapping in a new regulator is easier work than r&r'ing the alternator itself.
Yes, my experience is most "failures" are the diodes in the voltage regulator. Sometimes brushes wear out. I have never had bearings go bad.
When I needed mine rebuilt a couple of years ago, Bosch was rebuilding their alternators in a factory in China, using Chinese bushings, diodes and brushes.
I found a guy about an hour away who rebuilt mine with Japanese parts.
When I needed mine rebuilt a couple of years ago, Bosch was rebuilding their alternators in a factory in China, using Chinese bushings, diodes and brushes.
I found a guy about an hour away who rebuilt mine with Japanese parts.
Alternator upgrade
Has anybody updated their alternator with internal regulator? Thanks in advance Joe
e9coupe.com
I agree. Diodes most often the problem.
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Don, would you suggest saving the old pulley if you go with the AL-45? I almost had clearance issues with my PS belt.
The "diodes" and the voltage regulator are two separate components in the alternator. Some replies are implying that the "diodes" going bad are in the voltage regulator. There are no diodes in the regulator but it is the regulator that most often causes problems and is a 5-15 minute job to replace so it's worth doing first if no precise diagnosis is being conducted.
The rectifying diodes can also go bad but less commonly than the regulator (and brushes in the regulator, if built-in) and it requires more know how and disassembly of the alternator to replace.
The rectifying diodes can also go bad but less commonly than the regulator (and brushes in the regulator, if built-in) and it requires more know how and disassembly of the alternator to replace.
i don’t send pulleys back- I keep them.
note that the al45x I cited is now out of stock…
Hind sight is always 20/20, I sent mine back with the core like a schmuck.
Yeah- join the team!
I had to swap my pulley as the new one put my PS belt too close to the Alt belt.
I'm assuming you mean Rite-Way in the city. They are pretty amazing. Seen stuff like 250 GTO and Bugatti Type 35 generators and starters sitting on the shelve waiting for pickup in the weeks before Pebble