As a customer in a truck repair shop, you are permitted to the return of the spare parts that your truck mechanics have replaced. Yet, in order for you to be legally entitled to this right, you should sign a contract before the actual repair process takes place.
On the other hand, if you have no contract in which it is stated that your truck mechanics is obligated to return the spare parts to you, then he is in the position to take your spare parts and to never return it back in your hands. So, before you leave your truck in a repair shop be alerted to sign a contract including this point.
On the positive side, if you have signed a contract about a return of spare parts, then the shop should keep all replaced parts, and to provide those parts to you when picking up the truck from the shop.
6. Truck Mechanics Tend To Generalize Common Problems
Trucking companies should be always alerted to dishonest truck mechanics who want to generalize common truck problems. Simply, truck driver mechanics tend to a fallacy of defective induction.