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 TM 9-4120-430-14
0037 00
2.
Using a socket head screw key (Item 13, Table 2, WP 0067 00), loosen two setscrews (1) from shaft extension (2) to
release motor (3) from shaft extension (2). See figure 1.
3.
Separate motor shaft from shaft extension (2) and impeller (4).
4.
Remove four capscrews (5) and flat washers (6) from locking rib nuts of motor mount (7) that secure the motor
mounting plate (8) to motor mount.
CAUTION
Take care to avoid damaging the condenser coil while removing motor and mounting plate from unit.
5.
Lift out the motor (3) and mounting plate (8) and set aside.
6.
Loosen fan housing (11) by removing six countersunk screws (9) from the bottom of unit housing and one
countersunk screw (10) on the side of unit housing.
7.
Remove two capscrews (12), lockwashers (13), and flat washers (14) that attaches the linar-acturator bracket (15) to
the fan housing (11).
8.
Disconnect clamps (18) on service valves (19) by removing screws (16) and flat washers (17).
9.
Remove screw (20), flat washer (21), and clamp (22) that secure the pressure relief valve (23) to the fan housing
(11).
10. Remove screws (24), flat washers (25), and clamps (26) that secure the tubing (27) of the high and low pressure
switches to the fan housing (11).
CAUTION
Handle tubing at service valves, pressure relief valve, high and low pressure switches, and
linear-actuator with special care to avoid kinking or creating leaks at brazed joints.
11. Bend back tubing at service valves, pressure relief valve, high and low pressure switches, and linear-actuator with
extreme care to permit housing to be rotated.
12. Rotate housing (11) and lift carefully from the unit housing.
DISASSEMBLY
1.
Remove four screws (28) and flat washers (29) to remove inlet bell (30) from fan housing scroll (11).
2.
Remove impeller (4) from fan housing (11). (Do not force.)
3.
Using a socket head screw key (Item 13, Table 2, WP 0067 00), loosen two setscrews (31) on impeller (4) to release
shaft extension (2) from impeller (4).
4.
Remove four nuts (31), flat washers (32), and screws (33) that secure the motor (3) to the motor mounting plate (8).
Remove motor from motor mounting plate.
INSPECTION
1.
Inspect inlet bell (30), impeller (4) and fan housing (11) for out-of-round conditions, dents, burrs, and nicks.
2.
Replace defective items.
0037 00-2
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