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 TM 55-1905-223-24-18-2
Table 3-2. Troubleshooting-CONT
MALF UNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DRYER - CONT
STEP 3. Check limit thermostat.
Replace thermostat (para. 3-103).
STEP 4. Check for air leak at front or rear cylinder seal.
Replace cylinder seal (para. 3-104).
44. Heating element does not shut off.
STEP 1. Check thermostat switch with multimeter.
Replace switch (para. 3-107).
45. Motor runs but cylinder does not turn.
STEP 1. Check motor drive pulley.
Tighten setscrew.
STEP 2. Check cylinder belt.
Replace belt para. 3-107).
STEP 3. Check idler lever spring.
Connect or replace spring (para. 2-93).
46. Heating element does not heat.
STEP 1. Check heating element.
Replace heating element if defective (para. 3-106).
STEP 2. Check limit thermostat.
Replace thermostat if defective (para. 3-103).
STEP 3. Check exhaust fan for proper installation.
Correct as required (para. 3-107).
STEP 4. Check drive motor.
Replace motor if defective (para. 3-107).
GYRO INTERFACE ASSEMBLY
47. Erratic autopilot operation or course repeater dial on autopilot moves erratically or gives spurious
nulls.
STEP 1. Listen for noisy synchro transmitter.
Replace gyro interface unit (para. 3-115).
3-34
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