1300 alternator brushes

woodybelle

woodybelle

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Joined
May 10, 2006
Messages
498
Age
73
Location
Sonora, California
Bike
2006 ST1300
Does anyone know if you can change the brushes without removing the alternator? I have the throttle bodies off to replace some hoses and the alternator is right there. I have 100,000 miles on the bike and it may be time to replace the brushes as preventative maintenance. Igofar do you have any input, is it time to do this?
Thank you for any input.
 
woodybelle said:
Does anyone know if you can change the brushes without removing the alternator? I have the throttle bodies off to replace some hoses and the alternator is right there. I have 100,000 miles on the bike and it may be time to replace the brushes as preventative maintenance. Igofar do you have any input, is it time to do this?
Thank you for any input.
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no, have to split the case and I don't know if the brush/holder assemble is availible.
 
I have never done it so I am going by the shop manual and the parts diagram. Only the rear cover needs to be removed to get access to the brush holder from what I see. If it looks like you can get the end cover off the brush holder should be easier to get at than the end cover.

If I felt the need to replace the brushes I would certainly give it a try based on what I see. Hopefully someone who knows definitively will respond.
 
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Thanks Andrew, I am going to give it a try. I need to remove the thermostat housing now to get easier access to the alternator cover. Something to do tomorrow, and clean it up a bit.

IMG_6899.jpeg
 
The o-rings are easily missed. I removed the right-hand spigot thing when I took the alternator out on mine but left the left-hand one in place. Hoses seem to be a mixed bag: sometimes they will go for 30 years quite happily, and sometimes they're done in 15.

There is one thing to be aware of though, and that is the three screws holding the alternator cover on. They are long thin screws with a lot of thread engagement and are quite easily broken if the threads are half-seized. I realise Honda perhaps didn't have many options for siting the alternator, but it's in a bloody stupid place if you ask me.
 
I am almost to the brushes. I have everything removed except the EOP sensor. The sensor broke loose easily and turned out about a 1/2 turn and then became tight. I tried going back in and out several times and sprayed PB Blaster on it. I am afraid that if I put too much torque I will damage something. Any suggestions?
 

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Be careful with the three screws that secure the brush holder. They vary in size and length, but only slightly.
holm from Germany
 
Good news. I was certain that it could be replaced without pulling the alternator.
To bad that the regulator is so expensive since it is right there and easy to change while you are in there.
 
Andrew Shadow said:
Good news. I was certain that it could be replaced without pulling the alternator.
To bad that the regulator is so expensive since it is right there and easy to change while you are in there.
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Buying the regulator from Honda is really expensive, but it’s an ND alternator and there are plenty of on-line sources for these regulators. For example:
www.ebay.com

Voltage Regulator 14V NIPPON DENSO 1260000720 1260000721 1260001330 ISUZU | eBay

NIPPON DENSO.
www.ebay.com
There are a lot of different part numbers with slightly different configurations so it takes some searching to find the correct one. An alternator rebuild shop should also carry a variety of these.
 
Make sure you clean the commutator rings. You can get the brush assy if you have a starter\alternator rebuild shop nearby. Brush looks pretty good for 100k.
 
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