REPLACEMENT - TM-55-1905-223-24-70080

TM 55-1905-223-24-7

k. Hand turn drive pulley (12), working outer and inner V-belts (10) from drive pulley (12).

l. Remove four hexagon nuts (13), lockwashers (14), flat washers (15), and machine bolts (16) securing ac motor

(2) to pump/motor base (17).

m. Lift ac motor (2) out of unit.

n. Using standard puller, remove drive pulley bushing (11) and drive pulley (12) from ac motor (2) shaft.

REPLACEMENT

a. Install drive pulley (12, FIGURE 2-13) and pulley bushing (11) on ac motor shaft.

b. On replacement ac motor remove access cover from terminal box (1) by removing four screws (3).

c. Place replacement ac motor (2) inside RO desalinator unit aligning motor mounting holes with mounting holes on

pump/motor base (17).

d. Install four machine bolts (16), flat washers (15), lockwashers (14) and hexagon nuts (13) and secure ac motor (2)

to pump/motor base (17).

e. Hand turn drive pulley (12) and work inner and outer V-belts (10) into grooves of drive pulley (12).

f. Turn tension adjustment (7) on adjustable base (6) that pump rests on until V-belts (10) have tension.

g. Secure four hexagon nuts (5) on adjustable base (6).

h. At midpoint between motor drive pulley (12) and pump pulley, press downward on one V-belt (10) to allow 1/2 inch

deflection between pulleys.

(1) If V-belt deflects less than 1/2 inch, proceed to step (i).

(2) If V-belt deflects more than 1/2 inch, proceed to step (i).

(3) If V-belt deflection is 1/2 inch, proceed to step (m).

i. Loosen four hexagon nuts (5) on adjustable base (6) that pump (4) rests on.

j. Turn tension adjustment (7) clockwise to tighten V-belt tension or counterclockwise to lesson tension.

k. Check V-belt tension again [step (h)].

l. Adjust tension [steps (i), (j) and (k)] as necessary.

m. Route power cable for ac motor through outlet conduit (9) and outlet conduit elbow (8) into ac motor terminal box

(1).

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