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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
BOWTHRUSTER/FIRE PUMP CONTROL SYSTEM - CONT
STEP 3. Check for defective four-way transfer valve.
Replace four-way transfer valve, para 2-126.
STEP 4. Defective control station.
Replace control station, para 2-116.
141. RPM's do not decrease when control lever in fire pump control position.
STEP 1. Check for defective governor actuator (throttle actuator).
Replace governor actuator, para. 2-123.
STEP 2. Check for defective bow thruster engine.
Refer to Bowthruster Engine Manual, TM 55-1905-223-24-S.
GEAR MATE CONTROL SYSTEM
NOTE
Refer to Figure 2-1 and Table 2-3 for normal
indications.
142. Control lever in Neutral Stand-By. Air pressure at ports, 1, 2, 3, 4, 5, and 6
of three-way valves. Red pins at bottom of valves down or extended.
STEP 1. Check for defective directional control rotary valve.
Repair/replace directional control rotary valve, para. 2-117.
143. Control lever in Ahead Throttle (Initial). No air pressure at port #1 of
three-way valve. Red pin on valve #1 down or extended.
STEP 1. Check for defective exhaust valve.
Replace exhaust valve, para. 2-119.
STEP 2. Check for defective shuttle valve.
Replace shuttle valve, para. 2-119.
144. Control lever in Ahead Throttle (Initial). Air pressure at port #2 of three-
way valve. Red pin on valve #1 down or extended.
STEP 1. Check for defective directional control rotary valve.
Repair/replace directional control rotary valve, para. 2-117.
2-145
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