MOTOR REMOVAL & INSTALLATION
TOOL LIST
Socket (7/16”)
Deep socket (9/16”)
open end wrench (13/16”)
Socket and driver (7/32”)
open end wrench (3/4”)
loctite #545 or pipe seal
Duct tape for sealing motor ports
3 Pieces of wood blocking cut to 12”
CAUTION:
this unit is ul/cul listed for use in hazardous locations. the grounding system links all
metal components together. if you fail to properly reattach grounding stud rings, washers,
star washers and bolts, static electric build-up can result. the ul/cul listing for this unit
will also be null and void.
MOTOR REMOVAL PROCEDURES
Step one:
remove Grills and Duct rings from the front and rear of the unit. use a
1/4” ratchet and a 7/32” socket to remove bolts, washers and star
washers. Store these components in a safe place. they will be needed for
the reassembly of the unit.
Step two:
Position unit so that the back of the motor is facing you. Disconnect air
hoses from the motor by pushing in on the ferrule lock ring while pulling
on hoses.
Step three: use a 13/16” open end wrench to spin off brass hex fittings from the air
motor. Note: a 3/4” open end wrench may also be needed to spin off
air connection ferrules of the 90º elbow because of limited space.
Step four: lay unit down with the fan blade facing up. remove the nylon nut that holds blade on shaft with
a 9/16” open end wrench and remove the 3/8” flat washer. you may need to wedge the fan blade
to prevent rotation during this procedure.
Step five:
flip unit so that blade is facing workbench. create a 3 legged brace with pieces of wood cut
approximately 12” in length. Pound gently on the center of the cross beam to release the fan blade
hub from the shaft.
Note:
even pressure is required on at least two points, at the same time, to release the fan hub without
causing damage to the blade assembly or motor shaft.
CAUTION:
Striking the back of the fan hub directly with a hard or sharp object (e.g., hammer or
screwdriver) may damage components.
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