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This guide is for mechanics and DIY enthusiasts working on specific BMW models who need to replace the front rear differential mounting bush. Its key benefit is providing a specialized tool for efficient and precise bush removal and installation, preventing damage to the differential housing. A caveat is that it is model-specific and requires adherence to OEM instructions for safe operation.
| Model Part Number | 8860 |
|---|---|
| Brand | Laser |
The tool is designed for the front rear differential mounting bush on BMW 7 Series (2008-2015), 6 Series (2011-2018), and 5 Series (2009-2017 and 2010-2017 models).
No, this tool (8860) is specifically for the *front* rear differential mounting bush. For the *rear* bush on these models, you need Laser Part No. 8857.
You must use clean molybdenum disulphide grease for lubricating the force screw. This ensures smooth operation and prevents damage to the screw threads.
No, absolutely not. This tool is designed for controlled, gradual pressure application via its screw mechanism. Do not use impact tools.
It means the tool is designed to perform the same function and fit in the same way as the equivalent tool specified by BMW (OEM), ensuring professional-grade performance.
After use, clean the tool, especially the threads of the force screw. Wipe away old grease and debris, and re-apply a light coat of clean molybdenum disulphide grease before storing it in a dry place.
First, ensure the force screw is adequately lubricated with the correct grease. Check for any debris that might be obstructing movement. Also, confirm that the bush itself is not excessively seized in its mounting. Do not force the tool excessively if you encounter high resistance without diagnosing the cause.
Ensure the correct bush location and vehicle model are being serviced. Verify the tool is seated squarely against the bush and the differential housing without obstruction.
Confirm the force screw has been properly lubricated with clean molybdenum disulphide grease. Check for any debris or cross-threading. Ensure the bush is not seized or damaged in a way that causes excessive binding.
Check that the tool is centered on the bush. Ensure the mounting surface on the differential housing is clean and undamaged. Re-lubricate the force screw if necessary.
This usually indicates improper tool positioning or excessive force applied incorrectly. Ensure the tool is only making contact with the designated bush and seat areas as per OEM instructions. Never force the tool if resistance is unusually high without identifying the cause.
Compatibility: This tool is specifically designed for the front rear differential mounting bush on the following BMW models:
It is equivalent to OEM part number 33 0 020. For the *rear* differential bush on these models, use Laser Part No. 8857. For earlier E-chassis BMW bushes, consult Laser Part No. 8406.
Setup & Use:
Care:
