First, prepare a new spring with the same specifications as the original spring. Use a tool to remove the shock absorber from the JJRC C8803 RCV, taking care to save the removed parts.
Then, remove the old spring from the shock and install the new spring. When installing, make sure the spring is in place and securely fastened.
Finally, install the shock absorber with the new spring installed back into the JJRC C8803 Remote Control Vehicle and check if the shock absorber is in normal working condition.