AIR CLEANER BLOWER CIRCUIT. (Cont)

TM 9-2350-238-20-1

To access electrical leads, open aft air cleaner blower door assembly.

Step 3.

Disconnect lead 345 from aft air cleaner centrifugal fan. Place red probe

in lead 345 (terminal end). Ground black probe. Set MASTER and INST

switches ON. If multimeter indicates no voltage, go to step 5. If

multimeter indicates about 24 volts, go to step 4. Set MASTER and INST

switches OFF. Connect lead 345 to aft air cleaner centrifugal fan.

Disconnect lead GND from aft air cleaner centrifugal fan. Check continuity

Step 4.

between lead GND (pin end) and chassis ground. If no continuity exists,

repair ground lead. Refer to page 2-371. If continuity exists, repair or

replace aft air cleaner centrifugal fan. Refer to page 2-446. Connect lead

GND to aft air cleaner centrifugal fan.

2-125