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Service kit Park Tool LRT-1 Grey 1 pc
Precisely machined to fit Bosch® Gen 2 e-bike motors, this 8-notch tool removes and installs the lockring that secures the front chainring after the crank arm has been removed. The Park Tool LRT-1 service kit includes this tool designed for compatibility with specific Bosch® motor models and for use with a torque wrench via a 3/8" square drive.
The LRT-1 tool is made from 4140 heat-treated steel with a plated finish for durability and corrosion resistance. Its exact 8-notch profile and 50 mm outside diameter ensure a secure fit on compatible Bosch® lockrings. The 3/8" square drive allows direct use with torque wrenches, providing accurate tightening and removal.
After removing the crank arm, engage the LRT-1 tool with the lockring so the eight notches align. Attach a 3/8" torque wrench to the tool and apply the required torque to loosen or tighten the lockring according to the motor manufacturer's specification. Ensure the tool is fully seated before applying force to avoid slippage or damage.
Use with the specified Bosch® motor models and follow Bosch® service torque specifications. Inspect the tool for wear before use and keep it clean and lightly oiled to prevent corrosion. Do not use excessive force or improper adapters that could damage the lockring or tool.
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