Repair Fan, Ventilating (Supply Fan #4) (Bowthruster Room). (F IGURE 2-15)

TM 55-1905-223-24-17

2-25. Repair Fan, Ventilating (Supply Fan #4) (Bowthruster Room). (F IGURE 2-15)

This task covers:

a. Adjustment

b. Removal

c. Repair

d. Replacement

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Circuit breaker switch OFF, power

panel locked and tagged "Out of

Tool kit, electrician's,

Service - Do Not Operate."

Puller, 5120-00-516-3120

See TM 55-1905-223-10 for HVAC

systems operation and equipment

Materials/Parts

location.

Ventilating fan P/N 716800-01

Machine key P/N 100500-01

V-belt P/N 725537-39

WARNING

Make sure electrical power is OFF to avoid personal injury.

ADJUSTMENT

a. Adjust and align fan and motor pulleys.

(1)

Remove bolts (12, two on each side) an remove weather cover (1) for access to belt and motor.

(2)

Visually check pulley alignment before adjusting V-belt. Loosen bolts, nuts and lockwashers (8) to

relieve tension on belt.

(a)

Make sure motor pulley (3) is aligned properly with fan pulley (11).

(b)

To align pulleys, loosen the four bolts, nuts, and washers (6) holding the motor (5) to the base

plate (7) and adjust the motor as required.

(c)

When pulleys are aligned, secure bolts, nuts, and washers (6) firmly.

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