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99 Forester Alternator & 98 Forester donor
Posted 15 November 2011 - 07:14 PM
So I guess I'm in it for the long haul: just replaced the clutch and ball joints and will be doing the struts after the winter.
I'll be doing some long road trips for the holidays and was thinking about taking apart the alternator and perhaps swapping in some parts from a donor low-mileage unit off a '98 forester. They're not interchangeable. The 98' DOHC alt. has a 2 spade rectangular plug while the '99 SOHC alt. has a 3-spade oval plug. I suppose I could also splice in another pigtail to accommodate the '98 alternator.
In any case, the bearings and rotor are easy enough to replace, but some soldering is required to remove and test the regulator and rectifier and to replace the brush. Are there any parts that are more prone to failure? I'd rather not have to disassemble the whole thing.
I'd appreciate your advice and guidance. Thanks.
Posted 15 November 2011 - 11:16 PM
Part number: 23700AA34ARA
If you don;t have the 98 donor car, the plug from any 95 - 99 Legacy will work. Just hook the white wire to the Blue/red one on the Forester, and the black/white goes to the black/white. The black/white is the wire to the battery indicator lamp in the dash. The blue/red wire comes from the fuse panel. SBF3 I think.
Edited by Fairtax4me, 15 November 2011 - 11:21 PM.
Posted 16 November 2011 - 06:57 PM
Even though the '98 alternator tested just fine, I worry that it may also have the old regulator/brush holder assembly that was problematic. I'm guessing that newer style '99 alternator has an updated regulator and, thus, the different 3-spade plug.
So has anyone on here rebuilt these alternators?
Posted 17 November 2011 - 11:02 PM
Posted 18 November 2011 - 06:52 AM
Posted 18 November 2011 - 12:37 PM
Posted 20 November 2011 - 08:49 AM
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