This timing chain tensioner assembly tool is used to place the correct tension on the timing chain before performing the cam alignment procedure (using the valve locking tool TOA27790)

Please note, this tool is not the genuine BMW tool and operation of this tool is slightly different to the BMW tool. Please read the notes below and watch the video regarding operation.

Important to note - when using this tool, hand tighten it on the chain slider. DO NOT use a wrench/spanner on it! This tool does not have a spring unlike the OEM tool. This spring is designed to limit the amount of torque on the chain guide so that you do not tighten in until it cracks. This is why with this tool it is important to hand tighten it, and you will be able to feel when the guide is pushing the chain which is when you then stop tightening it and continue with the engine work. 

For the right hand side, on R1200 models leave a 10mm gap between the brass part and the engine, since it does not protrude all the way in like on the left hand side. This can be measured using verniers as per the picture below, or by using the sleeve (83302339885) from BMW:

For R1250 models, a gap of 15mm is used instead.

Please see the operation video on the R1200LC engine below:

The information provided is for guidance only. While every effort is made to provide the correct information, errors may occur.

We do not take responsibility if a mistake is made. Entrust the job to someone who is qualified.