Bert, There is a screw in the middle of the regulator cover that is usually under some sealing putty. Scrape away the putty and unscrew. Nothing mysterious other than needing some pretty sophisticated generator/regulator testing gear to test and adjust as described to some detail in most serious repair manuals. I would definitely check and verify the generator output before ever attempting to adjust the regulator.
The regulator is actually 3 parts: a) cut-out relay, b) voltage and c) current relay. A Yahoo/Google search [voltage regulator, vintage voltage regulator, 2 brush generator, vintage automobile charging system] etc will find lots of sites on-line that deal more with 1950-60's vintage cars and tractors that have plenty of great reading on how all three relays interplay with each other and their specific functions. If you are real handy you may actually learn how to adjust one. Me, I just find them at swap meets for $10 or less and they last 10-15 years. I always keep a spare in the car as no parts shop out on the back roads has a regulator for our cars. About every 5 years or so I air blow mine clean. I use 600 grit wet sand paper and rubbing alcohol to just lightly clean the contacts. A strip cut from brown paper grocery bag is good for final polishing the contact points. Good luck and hope this helps. Bob '59 Bug > From: [email protected] > To: [email protected] > Date: Fri, 28 Aug 2009 12:08:44 -0500 > Subject: [vintagvw] Sticking voltage regulator > > Volks, > > My 1970 Type 1 has an external voltage regulator (beneath rear seat on > left). When I drive, the "low charge" red light often flickers, then comes > on steady; when that happens, I can pull over, turn around (my rear seat > bench is still out), and tap the voltage regulator with a small wooden > stick. It then works fine for awhile. > > QUESTION: Is it possible to open the Bosch VR case and possibly clean up > the contacts with a little fine emery paper? Or if the contact points are > fried, are they separately replaceable? The VR is original so of course I'd > like to keep it if it's fixable. I haven't removed it yet -- I'll await the > advice of the sages. > > Thanks, > > Bert Knupp in Music City > > |__n__ > (_____)º > (Ô\_|_/Ô) > ü ° ° ü > Polizeikäfer '70 > > > __________ Information from ESET Smart Security, version of virus signature > database 4377 (20090828) __________ > > The message was checked by ESET Smart Security. > > http://www.eset.com > > > > _______________________________________________ > vintagvw site list > [email protected] > http://lists.sjsu.edu/mailman/listinfo/vintagvw _________________________________________________________________ Get back to school stuff for them and cashback for you. http://www.bing.com/cashback?form=MSHYCB&publ=WLHMTAG&crea=TEXT_MSHYCB_BackToSchool_Cashback_BTSCashback_1x1 _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
