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wayne1230cars
Samba Member
Joined: April 05, 2010
Posts: 2685
Location: Canada
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 Posted: Thu Oct 03, 2013 8:15 pm Post subject: |
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Not necessarily.
1). I would put the fan belt on and start car and see if gen light is still on. BTW make sure all connections on the voltage reg and generator are clean and tight.
2). If it is still on, check voltage output from generator while revving engine. You should have around 7.5 volts. If you only have 6 or a bit more that is a problem. Considering that your gen light is still on, that is a distinct possibility. You could also check voltage at battery. Again over 7 volts is what you want.
3). Next step would be to check gen output with voltage regulator disconnected. Do this test for just a few seconds as it is kind of hard on the generator. You should get around 20+ volts. If so, then suspect voltage regulator. I think another poster mentioned about v/r points sticking. Worth checking. You may need a new voltage regulator. The 6 volt v/r's are becoming a little harder to come by and more expensive.
All of these test procedures can be found in the link that I posted above.
The other quick check you can do, and perhaps even before you do steps 2 or 3 is to check the generator brushes. Make sure they protrude well above the holders. Also make sure you have good spring pressure holding the brushes against the armature. You could VERY CAREFULLY using a small wooden stick apply pressure to the brush with the car running. Warning - the bottom brush is awkward to get to. If the light goes out with this test, then brushes and/or springs need attention.
Hope you can get this sorted out. The fact that your generator will "motor" when you polarized it is good though.
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1960 beetle
1970 beetle convertible |
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Snort
Samba Member
Joined: April 02, 2005
Posts: 1957
Location: Seattle, WA
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| Posted: Fri Oct 04, 2013 7:28 am Post subject: |
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| Flying cars and jetpacks I can live without, but when are we going to get our 6V electronic voltage regulators? |
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wayne1230cars
Samba Member
Joined: April 05, 2010
Posts: 2685
Location: Canada
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| Posted: Fri Oct 04, 2013 8:40 am Post subject: |
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| Snort wrote: |
| Flying cars and jetpacks I can live without, but when are we going to get our 6V electronic voltage regulators? |
 Yes. I have heard some good things about the 12 volt electronic voltage regulators. Having that in 6 volt would be a nice option.
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1960 beetle
1970 beetle convertible |
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3foldfolly
Samba Member
Joined: March 08, 2009
Posts: 894
Location: Edwardsville, Il
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| Posted: Sat Oct 05, 2013 7:37 am Post subject: |
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| I would still hard wire a direct ground circuit from the generator housing ground screw to an engine case bolt to make certain you have an adequate ground. |
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Da TOW'D
Samba Member
Joined: December 25, 2005
Posts: 1321
Location: Bella Coma Canada
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| Posted: Sat Oct 05, 2013 9:41 am Post subject: |
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it seems to me that the generator would have to be grounded from its mounting to the fan housing
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'57 type 1 Blackberry
'58 SC Ruf
'62 type 3 Notch
'92 Eurovan Willy DD
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57BLITZ
Samba Member
Joined: June 12, 2012
Posts: 2385
Location: DEEK - U.S.A.
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| Posted: Sat Oct 05, 2013 12:08 pm Post subject: |
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| seefest wrote: |
| 57BLITZ wrote: |
As an aside . . . do we need to mention the ground strap that goes from your transaxle to the chassis???? If it is not in good order, it can cause all sorts of fun things for you to troubleshoot!!! |
He mentions the engine runs,that tells me the starter works,chassis ground strap is OK!! |
VERY poor assumption!
The clutch cable will usually be a sufficient ground . . . sometimes . . . intermintantly . . . for a while . . . kinda, sorta!
It can, however, fool you into thinking that the chassis ground strap does not need a cleaning of the connections and tightening of the bolts to assure a good ground!  |
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seefest
Samba Member
Joined: November 21, 2010
Posts: 20
Location: Arizona
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| Posted: Sat Oct 05, 2013 4:12 pm Post subject: |
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| 57BLITZ wrote: |
| seefest wrote: |
| 57BLITZ wrote: |
As an aside . . . do we need to mention the ground strap that goes from your transaxle to the chassis???? If it is not in good order, it can cause all sorts of fun things for you to troubleshoot!!! |
He mentions the engine runs,that tells me the starter works,chassis ground strap is OK!! |
VERY poor assumption!
The clutch cable will usually be a sufficient ground . . . sometimes . . . intermintantly . . . for a while . . . kinda, sorta!
It can, however, fool you into thinking that the chassis ground strap does not need a cleaning of the connections and tightening of the bolts to assure a good ground! |
There will always be a pessimist in the crowd,  he did what I said to do and it fixed it!  |
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txoval
Samba Member
Joined: January 23, 2004
Posts: 3552
Location: The Woodlands, TX
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| Posted: Sun Oct 13, 2013 12:06 pm Post subject: |
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Bought new regulator...problem fixed.
PS - NAPA sells new 6V Voltage regulators for VW's, identical in style to the Bosch units
PN: VR500 |
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Snort
Samba Member
Joined: April 02, 2005
Posts: 1957
Location: Seattle, WA
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| Posted: Mon Oct 14, 2013 8:06 am Post subject: |
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| Does your new voltage regulator have a screw terminal for the generator light wire or is it a spade connector? |
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txoval
Samba Member
Joined: January 23, 2004
Posts: 3552
Location: The Woodlands, TX
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| Posted: Mon Oct 14, 2013 9:09 am Post subject: |
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The smaller wire (for the indicator light) is a spade
Large (power wire) is screw type |
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