When I started 30 years ago our engineers did minor maintenance on our engines. Now the guy we have favorite words are, "get it towed to the dealer" I understand things have changed since then but are there engineers that still change the oil and stuff?
Not in our department, although 90% of all repairs and preventive maintenance are done in house the work is completed by our maintenance officer and/or his assistant. Our chief officers will pitch in and help when our maintenance officer it tied up with his regular job. Other than that we don’t people who think they are mechanics working on the trucks.
We do alot of small stuff in house we have different people that are familiar with different areas of the equipment. Like I work on any light or siren issues with any of our equipment and even some stuff for our PD. We have some guys that drive semi trucks and are more familiar with the maintenance of larger trucks. But we also have a contract with the city garage in our nieghboring town to fix anything that we cant do ourselves which is really only major repairs.
We only do minor repairs in house, anything else is done off-site by someone certified as an emergency vehicle technician,this is strictly a liability issue.If we service brakes, for example, in house and there is a failure causing damage or harm, the liability is ours to bear.
Like most of you we do minor things in-house. Oil, filters, batteries, alternators, packing, lights, broken brackets, etc. Major engine work always goes out, and we never touch the brakes. We also have some truck drivers who know maintenance, and a number of farmers, and a few industrial maintenance guys so it makes for a nice mix to have the right information.