Hello, Back in August '09 there was some discussion on the list about fixing a sticky voltage regulator. Most vr's are sealed with no user repair or adjustment intended. However, the seal (usually just paint or caulk in the middle of the cover) is easily scraped away and the cover unscrewed from the regulator body.
The Bosch two-unit regulator (voltage/current relay and cut-out relay) it is a maze of relays, contacts, coils and connections. However, using a 1968 Glenn VW manual I have tackled these vr's with limited success and resurrected several $2 swap-meet ones to be worthy as road trip spares. The Glenn manual is the only manual that I have found so far that describes the operation of the regulator, offers some tests to conduct and offers some suggestions and which contacts and stops to move in which direction to accomplish adjusting various functions of the regulator. Most other manuals just say "replace". The only drawback is that is the Glenn manual describes the 6 volt regular but that is essentially the same as the 12 volt regulator. The Glenn VW repair manual was published up to about 1969 or so and was the predecessor of the later and maybe better presented (but less complete regarding voltage regulators) Chilton Manual. These manuals come up on ebay quite often and are easily obtained for a decent price. <<<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300377521780&ssPageName=ADME:B:EF:US:1123>>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300377521780&ssPageName=ADME:B:EF:US:1123 For testing the electrics on my bug and the various cut-ins and cut-outs of the regulator & generator setup I can recommend this device, the Heathkit CM-1050 Auto Analyzer. Nothing fancy or sophisticated, easy to use and easy to fix if it should develop a problem. They come up on ebay fairly regular and a decent one can be had very reasonable. Be sure to get one with both the Operating Manual and the Assembly Manual and complete with all the various attachments and leads. <<<http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=110469859830&ssPageName=ADME:B:EF:MOTORS:1123>>> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=110469859830&ssPageName=ADME:B:EF:MOTORS:1123 Good luck and hope this helps. Bob '59 Bug _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141665/direct/01/ _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
