If you choose to carry out fixes for your Orion APL50QL then it will always be a great idea to own a Workshop Manual to keep just for personal reference just in case you need to know techniques to strip off a certain part much like the Wheel Bearing and install it again perfectly.
Orion APL50QL Workshop Manuals provide you with distinct diagnostic details with regards to your car so if something is broken it helps you understand what the problem is and how to fix it. You will be able to analyse if this can be achieved on your own or in case the job is just too big you can still make a reservation for your APL50QL right into a local repair garage.
Orion APL50QL manual