2-11. MAIN FAN - MAINTENANCE INSTRUCTIONS (Cont).
Disassemble main fan.
1. Remove six screws (1) and washers (2).
2. Remove impeller cover (3) from fan housing (4).
Remove impeller nut (5) and washer (6).
Remove impeller (8).
Remove woodruff key (7).
Remove shim (9).
Remove four screws (10), bearing retainer
plate (11 ), and bushing (12).
When removing the motor cover (15) from
the fan housing (4), use care not to pull the
stator electrical wires from ground.
. Remove six screws (13) and washers (14).
Carefully remove motor cover (15) from fan hous-
ing (4). Slide the motor cover (15) back onto the
Use care not to lose loading spring
washer (16), as it will fall free when the motor
cover is removed from the fan housing.