BMW Poly-V Belt – R 1100 Models

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Filed Under (BMW) by admin on 16-11-2010

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Information: In an effort to reduce service volume, a maintenance-free ribbed Poly-V belt was adopted on all R1100 models from engine number 38946130 onwards (09/94 production onwards). This belt does not need to be retentioned (even at the 600 mile service). The old belt required replacement every 24,000 miles. The new style belt is to be replaced every 36,000 miles. Use the same torque procedure as the old belt. Replacement of an old style belt with the new maintenance free belt requires the use of the new parts below: Parts Kit: 12 31 1 342 086 (kit consists of the following) In addition to the Poly-V belt, the following parts were also changed: 1. Top pulley new: steel old: Aluminum 2. Bottom pulley new no spot welds: old: steel w/three spot welds on front 3. Belt new: Ribbed, printing on belt (1342059 Fa. Dayco) or (1341779 Fa. Conti) Slight squeaking may be heard for a short time after a cold start when temperature is below 50°F. The belt should reach it’s correct operating tension soon after the start up. The belt only needs retentioned if the slight squeaking does not stop after warm up.

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