This Bosch service kit is designed to protect bearings L1 and L3 on the BDU4xx drive unit. It includes 1x bearing ring 1.270.020.157 and 1x circlip 1.270.016.112 for L1, and 1x bearing ring 1.270.020.156 and 1x circlip 1.270.016.114 for L3. Also, it comes with 1x 20 g tube of grease and 1x lifting - tool to ensure smooth installation and long - lasting performance.

Using this Bosch service kit is easy. First, make sure the drive unit is turned off and cooled down. Use the lifting - tool to access the bearings L1 and L3. Install the bearing rings and circlips as indicated for each bearing. Then, apply the 20 g tube of grease evenly to reduce friction. When using this kit, always wear protective gloves to avoid any injuries. Keep the kit in a dry place away from direct sunlight. After installation, check the bearings regularly to ensure they are functioning properly. If you notice any unusual noises or vibrations, stop using the equipment immediately and inspect the bearings again.