AC–81 AIR CONDITIONING SYSTEM – AIR CONDITIONING UNIT 10. REMOVE HEATER TO REGISTER NO. 3 DUCT Remove the 3 screws and the heater to register No. 3 duct. N08536 11. REMOVE A/C UNIT (a) Disconnect connectors from the unit. (b) Remove the 6 bolts and the A/C unit. N09037 INSTALLATION HINT: Pull the drain hose of the A/C unit forward until the yellow paint on the hose is visible in the engine compartment. Insert the drain hose into the engine compartment hose until the matchmarks are aligned. N11017