York HIDS006B21S Service Manual page 81

(9) Remove two lower M6 screws securing the motor base. Then loosen the upper two M6 screws.
(10) Remove four M4 screws securing the ring of the fan casing at the rear side of the fan motor. Then
remove the motor base, the ring, and the fan runner at the same time.
Motor Base
(11) Loosen the screw securing the fan runner onto the fan motor using the adjustable wrench and pull out
the fan runner.
ATTENTION:
The total weight of the motor base, the fan motor, the ring and the fan runner is approximately
33 lbs. (15kg). Perform the above work carefully.
SM-18001-rev.1
TURN OFF all POWER supply switches.
Motor Base
M4 Screws
Fan Runner Securing Screw
Tool Phillips Screwdriver
M6 Screws
Fan Runner
Tool Phillips Screwdriver, Adjustable Wrench
MAINTENANCE
(Ducted High Static Type)
Ring
Fan Motor
4-7