Hitachi RPI-0.8FSG1 Service Manual page 247

(4) Remove the casing "1" by pushing the catch part
at four positions towards the inner side.
(5) Loosen the screw for the coupling by
a hexagon wrench.
(6) Remove the fan motor by sliding it backwards after removing the fixing band.
Pay attention not to drop it.
NOTE:
Pay attention to the position of the runner shaft when replacing the fan motor.
In case that the resistance is big when rotating the motor shaft by hand after replacing, remove the bearing
once according to the item 2.9.5 "Removing Bearing", adjust the positions of the runner shaft and the motor
shaft on the straight and assemble the runner shaft again.
TURN OFF all power source switches.
Catch
Coupling
Hexagonal Wrench
Motor Fixing Band
Screw
Tool Phillips Screwdriver
"1"
Casing
Tool Hexagon Wrench
Loosen
Tool Phillips Screwdriver
SERVICING
(2.9 Ceiling Type)
2-107