BMW Service Bulletin Archive

rear-drive-oil-leaks-33-001-77-1021r-877

Serv j ce-i nf orma tion BMWM OTORRAGDM BH Motorcycle R50/5 – R100RS Munich,August 77 Service Technic R-VK-10 wb/ur Group: Rear Axle 33 001 77(1021R) For U.S.A. and Canada only Subject: Rear Drive Oil Leaks Dear Dealer, It an oil leak on the rear drive โ– ust be repaired, use the following guidelines: General Never install a replacement seal without a BMW- special tool, this seal is a delicate design, if re-shaped, by incorrect tools, could be damaged before its intended use. Inspect and remove any obstructions in the path of the seal before installation of the seal. ยทCoat the seal, O.D. and I.D., with light grease, slightly !or easier installation. 1.) Sealing toward the swinging arm The seal, Part No. 33 12 1 230 356 must be installed with a special tool, No. 33 1 750. The threaded ring and threads in the housing must be perfectly cleaned, free o! oil and grease. Coat the threaded portion of the ring with Hylomar S032, or other proven sealant before installation. Do not coat spacer ring, Part No~ 33 12 1 230 353 or shim, ~rtlfo. 33 12 1 230 525 with gasket cement. Reason: The rubber seal ring, Part No. 33 12 1 233 302, will seal this assembly, preventing any rear drive fluid to leak into the drive shaft tunnel. -2- ( Kenntnis genomrnen – Pris connaissance – Noted – Tornado nota – Preso conoscenza Ablage – Archives – File – Arch1vo 1 Betrieb~leitung Direct1011 I KDยทAnnahme : Receot1on cheritele ,–,., -โ€ข ””>r’ -.~โ€ขยท – ~ Gewahrl. -Sachb. nspecteur garanhe i Teiledienst โ€ข 1 Betnebsie1tung I ~=~ยท~~’.~1~c~-~ ~~~:~ ::ch_~~s ?.1:~~I~~.:. r, โ€ข -Wer1

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