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signs of falty alternator/regulator 1976 R60/6
- Thread starter bikebombs
- Start date
This will require some checking rather than starting to throw money at it!! Could be a voltage regulator...could be bad battery. Check out Snowbum's somewhat lengthy but in depth article on alternator troubleshooting.
https://bmwmotorcycletech.info/trbleshootALT.htm
Motorrad Elektrik has (I think they still have them in stock) a nice handy booklet for troubleshooting the charging system.
https://bmwmotorcycletech.info/trbleshootALT.htm
Motorrad Elektrik has (I think they still have them in stock) a nice handy booklet for troubleshooting the charging system.
manicmechanic
ABC,AMA(LIFE),MOA,RA,IBMW
Check the bulb first.
pglaves
#13338
Good idea. But the most common cause is an open rotor. Use an ohm meter to measure from one slip ring to the other. This test should be a few ohms. If it reads infinity it is open. Check from each slip ring to the steel body of the rotor. This should be INFINITY.
Edit: I fixed it.
Last edited:
Zero ohms or infinity?
Faulty alternator / regulator signs.
Thank you everyone for taking the time. I talked to the guru Shail, my mechanic. He believes after my exploration that the problem lies with the rotor. I have a battery booster to travel from Vancouver Island to Shail's Motorcycles 200 miles away.If I can start I can get there. Cheers
Thank you everyone for taking the time. I talked to the guru Shail, my mechanic. He believes after my exploration that the problem lies with the rotor. I have a battery booster to travel from Vancouver Island to Shail's Motorcycles 200 miles away.If I can start I can get there. Cheers
jad01
New member
I agree with RPGR90s. Did you verify that the indicator bulb in the instrument cluster is good? I think that is part of the charging circuit and it will prevent charging when burned out; might be worth a look.
pglaves
#13338
Oops! Infinity. Not zero ohms. Infinity!! My bad!
stevenrankin
Active member
Airhead weakness
One of the biggest weaknesses of the airheads is the bulbs for the warning light and the sockets they fit into.
The plastic instrument gauge cluster is not difficult to take apart to get to the bulb and socket. Be careful when putting it back together to go easy on tightening the various screws holding it together, they don't like being over tightened.
A lot of people have ditched the bulbs and the sockets entirely and have gone to the Katdash system.
Open rotor would be my next quickest thing to check. It doesn't need to be removed to check. Unplug the two brush connectors and you can measure continuity through the brushes, the rotor all in one shot. This will give you an idea if the brushes are making proper contact as well as showing if the rotor is open internally. St.
One of the biggest weaknesses of the airheads is the bulbs for the warning light and the sockets they fit into.
The plastic instrument gauge cluster is not difficult to take apart to get to the bulb and socket. Be careful when putting it back together to go easy on tightening the various screws holding it together, they don't like being over tightened.
A lot of people have ditched the bulbs and the sockets entirely and have gone to the Katdash system.
Open rotor would be my next quickest thing to check. It doesn't need to be removed to check. Unplug the two brush connectors and you can measure continuity through the brushes, the rotor all in one shot. This will give you an idea if the brushes are making proper contact as well as showing if the rotor is open internally. St.
jhall
BMWMOA #24809
Maybe Voltage Regulator
When I installed the OMEGA 600 charging system, it came with a larger capacity VR. Within 10,000 miles, the RT's charging indicator needle began to lag, and did not act as it did initially. This happened one day before I was to leave on a trip. The only spare part I had on hand was the original VR, so I installed it. The problem was fixed, though the needle no longer comes up as high as it initially did with the OMEGA install. That was about 10,000 ago, and all is still well. So I bought another OEM VR, as a spare.
My point to the OP, don't discount the VR as the possible problem.
When I installed the OMEGA 600 charging system, it came with a larger capacity VR. Within 10,000 miles, the RT's charging indicator needle began to lag, and did not act as it did initially. This happened one day before I was to leave on a trip. The only spare part I had on hand was the original VR, so I installed it. The problem was fixed, though the needle no longer comes up as high as it initially did with the OMEGA install. That was about 10,000 ago, and all is still well. So I bought another OEM VR, as a spare.
My point to the OP, don't discount the VR as the possible problem.
RPGR90s
Member
Good luck. I hope you make it
