FAN INLET (RINGS) (Continued)

TM 5-4120-359-14

b. Removal

(1) Using screwdriver, remove three each screws and flat washers.

(2) Remove the outer fan inlet ring.

(3) Using allen wrench, loosen the two setscrews in the extension shaft.

(4) Slip the fan and extension shaft out of the blower housing.

(5) Using screwdriver and open end wrench, remove the sight screws and lock nuts from the blower housing.

(6) Remove the blower housing and the remaining fan inlet from the mounting plate.

(7) Using screwdriver, remove the three each screws and flat washer.

(8) Remove the fan inlet from the blower housing.

(9) Go back to step one, and remove the remaining two rings from the other blower housing.

Installation

CAUTION

Sheet metal screws are used to mount fan inlet rings. Take care that mounting

screw holes are not stripped.

(1) Using screwdriver, install the inside fan inlet ring on the blower housing with three screws and flat washes.

(2) Using screwdriver and open end wrench, install the blower housing to the base flange with eight each screws

and lock nuts.

(3) Slip the fan and extension shaft on to the motor shaft.

(4) Aline the flat portion of the motor shaft with the setscrews on the extension shaft.

(5) Using allen wrench, tighten the two setscrews.

(6) Spin the fan by hand to be sure there is no interference. If fan rubs, see paragraph 4-23 for fan alinement.

(7) Using screwdriver, install the outside fan inlet ring on the blower housing with three screws and flat washers.

(8) If the inlet rings were removed from the other fan, go back to step (1) and reassemble the other fan.

Follow-on Procedure: Install fan and motor assembly. (See paragraph 4-21.)

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