Here's how: Make sure you pull the power plug from the back of the dehydrator before you do anything else. Then remove the dehydrator from the radar. Now mark and disconnect the air hoses, take the two desiccant containers out of the cabinet. Next remove the two wiring damp loops that secure the motor wiring to the air intake filer bracket Remove the motor and compressor assem- bly from the cabinet. You won't have to dis- connect the wires if you're careful. There're four mounting bolts that hold motor and compressor assembly to bottom of cabinet. Remove them. t's easier if you take out the front ones first. Shift compressor end of assembly to one side and lift up. Easy does it. Set the assembly on something flat. Now take a look at the back of the gear box. You'll find three screws in the back arranged like a triangle. The top screw head's smaller than the two lower ones. The top screw's the oil level screw. Take the lock wire off that goes through the screw head and remove the screw. The oil level should be up to this screw hole. I TVP