AFI 11-2C-130v3 - BITS

178 AFI11-2C-130V3 23 APRIL 2012
12.10.3.7.1. Pull the BSU #2 Power, three phase, Main AC Bus circuit breaker
located on the copilot‘s upper circuit breaker panel.
12.10.3.7.2. Pull the BSU #2 Power, three phase, ESS AC Bus circuit breaker located
on the pilot‘s side circuit breaker panel.
12.10.3.7.3. Pull the BSU #2 ESS DC control power circuit breaker located on the
copilot‘s lower circuit breaker panel. CAUTION: When performing jumping of
BSU connectors J1 to J4 ensure proper phase connections are made (i.e., Phase A
connected to Phase A). Crossing phases can cause damage to equipment
12.10.3.7.4. Remove J1 and J4 cannon plugs from the #2 BSU (See Figure 12.15).
12.10.3.7.5. Install jumper wire on the cannon plugs from the #2 BSU (See Figure
12.15).
12.10.3.7.6. Reset circuit breakers.
12.10.3.7.7. Verify that the Main AC Avionics Bus is powered.
12.10.3.8. *GTC Stalls and Fails to Accelerate to ―On Speed‖
12.10.3.8.1. Hold fingers over the acceleration limiter holes (see Figure 12.3) while
an assistant starts GTC. Place and remove fingers over the holes several times during
the start cycle until the start cycle sustains itself.
12.10.3.9. GTC Fails to Rotate (No start light)
12.10.3.9.1. Check the following prior to proceeding with the Hostile Environment
Repair Procedure: GTC control circuit breaker, GTC fire handle, Isolated DC bus
powered, and check GTC doors to ensure they are fully open.
12.10.3.9.2. For a failed door actuator, (doors open and close but do not fully open),
disconnect the GTC door actuator, at attachment point on inside of upper door. Prop
doors open (use broom handle, fuel dip stick, etc.). Disconnect door actuator cannon
plug and install jumper wire from pin ―D‖ to pin ―E‖ and attempt restart.
12.10.3.9.2.1. When finished with the GTC, attach door actuator to upper door,
remove jumper wire, and install cannon plug back on actuator. Use door switch
to close door.
12.10.3.9.3. For failed door actuator (doors not open or not opened enough to allow
disconnecting of actuator), remove four (4) screws in upper door. This will release
the door actuator attaching bracket on which the door bypass switch is located. Prop
doors open and attempt start. NOTE: Ensure bypass switch is fully extended.
12.10.3.9.3.1. When finished with GTC, close and secure the doors using two of
the four bypass switch mounting bracket screws.
12.10.3.9.4. If the limit switch is suspected faulty, at upper forward area of the
intake, disconnect the two wires to the door bypass switch and connect the two input
leads together. This will bypass the limit switches.
12.10.3.9.5. Start GTC.
12.10.3.10. GTC Fails to Rotate (Start Light On)