If the optional rear heater-A/C is fitted, the rear blower motor can be serviced without needing to remove the whole unit from the car. You should begin by disconnecting the battery negative cable, then remove the heater-A/C unit's rear cover and both vertical and horizontal ducts before removing the upper housing. After that, unscrew the three bolts on the blower motor mount and pull the assembly out. You must remove the retainer clip connected to the hub before taking out the wheel from the shaft of the blower motor. When mounting the blower, fit the hub flat on the blower motor shaft and be sure the ears on the retainer clip are correctly aligned, then clip the retainer onto the hub. Place the seal and isolator onto the blower motor plate and then line the blower motor and isolator up with the mountain bosses on the upper housing, pressing each isolator down. Replace the blower motor mounting plate with the three screws tightened to 2.2 Nm (20 in. lbs.) before you position the upper housing, horizontal duct, vertical duct and heater-A/C cover securely. When you finish, link the negative battery cable back to its proper receiver.