Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 BMW X1 sDrive28iFACTORY OEM SERVICE PROCEDURE
Synchronization GS6-53DZ
23 23 SYNCHRONIZATION GS6-53DZ - TECHNICAL DATA SPECIFICATIONS
| Distance between synchronizer ring and clutch body | ||
| New condition | ||
| 1st/2nd gear | mm | 2.70... 3.50 |
| 3rd/4th gear | mm | 2.40... 3.10 |
| 5th/6th gear | mm | 1.75... 2.10 |
| Max. wear limit size | mm | |
| Reverse gear | ||
| New condition | mm | 2.70... 3.25 |
| Max. wear limit size | mm |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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