rocker-arm-upgrade-11-032-86-2208-586

…. ··••a•··-···••·•••-••”•·•·•’ • •· .. ···••••··•·•••··••• ,.-~–..-..’,·•~·••••: … •·,,,.-..~·•1·:•,.•·•”” •••••~•r.-n.t•·•,·,-.·,•• •••···•••• 1•··•”•-“·· …. ~ , … ,.,, ••• •·• ,.,._ •• , ••••• , … ,..,., ··-•!-• •··• ,, •·•·· ( L Service-InformationM otorcycle • Group: 11 BMW of· NA. . .. ‘Engine·. . _ Service Department.’ ; . ,. . . : . . . . .; May 1986 ·11: 032 86 .. •. (2208) For USA Only . _.. -..~. -;· ~ •;: , …,. ;.· ;:~.~~. “: j -·. ·,._ ‘ ‘ “‘ 1 Installation of 1985-Model R80 Rocker Arm Assemblies on Older Boxers Change: Features: ~—..a Starting with the 1985 model, all Boxer engines have modi£ ied rocker arms as a means of reducing noise and ensuring accurate adjustment of rocker arm endplay. This modification can be done on all Boxer engines from model year 1976 to the present. 11 33 l 337 720 = 0.2 mm 719 = 0.25 mm 718 = 0.3 mm 21 = 0.35 mm 33 1 337 713 = rocker intake 33 1 337 715 = rocker exhaust 11 12 1 337 867 = rocker mount 11 12 l 337 868 = washer The new rocker arm pivots reduce mechanical noise. Rocker arm endplay is adjusted to 0.05 + 0.02 mm by shim washers. In addition, a pressed-in a damping effect on the noise arm striking the pivot mount. plastic inser;_ has caused by th~ rocker As shown in the drawing, silicon rubber inserts prevent the cooling fins from vibrating and causing noise. No+-.e: 11 12 1 337 818 You can order the necessary parts through normal parts channels. A complete conversion kit can be ordered from our Parts Department under Part No. 11 33 9 057 699. Pre-1985 model heads will need support bushings, Part No. 11 12 1 261 405, if the new rocker arm assemblies are used. Very truly yours, BMW OF NORTH AMERICA, INC. Richard Dampf~ National Technical Manager Motorcycle Group RD:ch/033 ( (