diode-board-12-012-88-2323-988

Service-InformationM otorcycle BMWNA Service Department : . ; ~ ., . . . l Diode Board – Complaint: Affected Models: ·cause: Remedy: 1. Diode boarc • solder melting. 2. Low bcttery – charge rate. 3. Generator light glow~ng at apprcxirnately half intensity, P,11 Prxer models from 1981 with electrostatic dip black coatir~ en ~1~ing chain cover. Increased resistanct at diode board ground points du~ to corrosior. of ground wire bolts, the deteriorc!ticr. of ground wires, e~ecPrb~ted by the insulating eff~cts of paint at ~ir~f beard mounting points on the ti~ir.g chain cover. Renovt diode board and scrape away pairt fr0~ all four diode boarcj mounts on timing cover. On models with • ·ru’Jbcr r-:ct:rtPd diode boards, grourid wires shcu1c be replaced if any signs cf ccrrosior. or over•heating are detected. Connections .on ground wires shc~1 ~ ~e soldered to ensure proper connection as well es scraping tl1t pa ~r,t frol” tre cover around the bolt he,1d to ensure 9rour~ wire terminal contact with the tiffiins cover. Clean threads er srcund wire bolts as Wt=11a s two other adjacent bolts to ensure that the tirrir:s cover has a secure, resis+.r1nre-free connection to the block. SOLDER /~ Very truly yours, BM\,JO F NORTHA MERICAIN, C. &~~ Frank Stevens ~~- Richard Dampf National Service Manager National Technical Manager ( .~. :.- ·.’”-·~ l,J