Saab 900 SE Turbo - Alternator Replacement
2. Removal
2.1 Electrical Connections
First the positive battery cable is disconnected at the battery terminal to.prevent a  loose cable from shorting to the chassis later.  Then the two electrical connections on the back of the alternator (battery cable and the warning light wire) are unhooked from below the car

 

2.2 Lower Alternator Bolt
After soaking both ends of the bolt a couple times with PB Blaster or similar, it came loose using an 8-mm bit and 3/8 ratchet with a 20" extension.  The bolt is not removed until after the top of the alternator is free.

I had to use my heavier 3/8 ratchet with a short extension at the end for a handle and some force to break the bolt loose.  Without any penetrant, rounding off the bolt inside the bracket is a definite possibility...

2.3 Tensioner
The tensioner can be removed with pulley attached.  A 3/8 ratchet with an 8-mm bit was used to loosen the tensioner bolt, then an 8-mm hex key to remove it the rest of the way.  Since it was already out, it was a good opportunity to replace the tensioner pulley using the Saab replacement kit with retaining washer and torx bolt.
2.4 Upper Alternator Bolt
The upper alternator bolt is recessed behind the tensioner assembly.  3/8 ratchet, 8-mm bit.  Not as much force needed here.  Apply penetrant to the threads (a) and bushing (b) shown below.  Now the alternator can be pried out of the bracket, using the lower bolt as a pivot, while leaving it loosely attached to the lower bracket.
2.5 Upper Bracket
The top alternator bracket is removed to make more room for the alternator to be taken out between the strut tower brace and the engine.  The bracket is held by four bolts. Little force is needed, but the rear bolts are hard to get to.  3/8 ratchet with a couple extensions and 13-mm socket.

a)  thread 
b)  bushing

2.6 Alternator Removal - Finally!
With the bracket out of the way, the lower alternator bolt can be withdrawn, and the alternator can be lifted out.  It should just clear the strut brace and the engine. Dropping it on the way up seems like a real possibility if it slips.  I used a towel to protect the drive shaft, steering rack and wiring underneath..
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