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BMW Driveshaft to transmission output flange fitting, all Airhead modelsBMW Driveshaft to transmission output flange fitting, all Airhead models:The correct part number for bolts for all models is: 26 11 1 242 297 NOTE: Do NOT use a lock washer, even if yours came with one. Use only the bolts above. A drop of blue Loctite on each is a good idea. You need 4 bolts, and these should ALWAYS be replaced with new ones. Never reuse a bolt. These are designed to stretch a specific amount at the correct torque, and cannot be re-used (except in an emergency of course, but that's your decision!) The correct tightening torque is WITH the BMW special adapter according to Haynes BMW Twins 1970-1988: "NOTE: On all models the torque setting is specified to take into account the leverage which results from the use of the special crowsfoot type spanner BMW Tool 00.2.560; do NOT attempt to approximate it using any other means (such as applying a measured pull at the end of a spanner of known length). Use ONLY the BMW tool to tighten the bolts; if necessary take the machine to a BMW dealer..." Torque settings according to "Haynes BMW Twins 1970-1988 Owners Workshop Manual":
Torque Settings according to Clymer's: Chapter 10, table 1 it gives specs only as torque and the text says to do it with a criss cross pattern. Doesn't mention the adapter. Values shown are:
BMW tool 00.2.560 - adapter for torque wrench to torque bolts holding drive shaft to transmission output flange Specifications:Center to center is 44 mm . It's just a 10mm 12 point box wrench cut off and jammed into a 3/8 " drive adapter. Note that the torque wrench fits in from the BOTTOM of the wrench in the right hand photo. Click on the pics to get BIGGER view.
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