Unit Components Front View of UnitOpen Engine Compartment ComponentsOpen 1. Engine Oil Dipstick (on side of engine) 6. Alternator 2. Engine 7. Dehydrator (Filter-Drier) 3. Coolant Expansion Tank 8. Compressor 4. Coolant Overflow Bottle 9. Base Controller On/Off Switch 5. Electric Motor S-2 Remote Evaporator – Front ViewOpen S-3 Remote Evaporator – Front ViewOpen Parent topic: Unit Description