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 TM 55-1905-223-24-18-1
Troubleshooting - CONT
Table 2-2.
Malfunction
Test or Inspection
Corrective Action
THROTTLE INTERLOCK - CONT
176. No air pressure at (AIR) port of throttle interlock.
STEP 1. Check for defective shuttle valve.
Replace shuttle valve, para. 2-119.
STEP 2. Check for defective three-way valve.
Repair/Replace three-way valve, para. 2-119.
STEP 3. Check for defective directional control rotary valve.
Repair/Replace directional control rotary valve, para. 2-117.
Refer to Malfunction 75, STEPS 2 thru 8).
STEP 4.
177. No air pressure at (VENT) port of throttle interlock.
STEP 1. C h e c k for defective throttle interlock.
Repair/Replace throttle interlock, para. 2-119.
178. No air at throttle actuator.
STEP 1. Check that reduction gear is engaged.
Refer to TM 55-1905-223-10.
STEP 2. C h e c k for defective throttle interlock.
Repair/replace throttle interlock, para. 2-119.
STEP 3. Check for defective shuttle valve.
Replace shuttle valve, para. 2-119.
STEP 4. Check for defective three-way valve.
Repair/replace three-way valve, para. 2-119.
GEAR ACTUATOR
NOTE
Refer to Figure 2-1 and Table 2-3 for normal
indications.
Air pressure at Ahead port of gear
179. Control lever in Neutral Stand-By.
actuator.
STEP 1. Check for defective directional control rotary valve.
Repair/Replace directional control rotary valve, para. 2-117.
2-151
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