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C-130 Hercules News
Posts posted by pjvr99
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at sea level, a 0/low time compressor will make 80 to 85psi at normal ground idle. This increases
as throttle is advanced towards take off an TIT increases. The highest I have ever seen was 130psi.
This was a 0 time engine where the CDP fell in "high" zone of the compressor graph. Compressor
performance is based on OAT and pressure altitude.
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You will need to do a complete overtorque inspection of the QEC kit and truss mounts, and
also complete overtemp inspection and borescope the turbine, IGV and combustion liners
before attempting to start that engine again
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1 hour ago, Rzouga said:
I will try to do that next time, but what is the yellow box check, do you mean TD test set??
yes
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Cool. Ok start is perfect. LSGI looks like like a low time, very strong engine, but
thats where things get hazy. NGI should be 580 to 600.
After lights out TIT should be 740 to 780. It does look look like the FCU may have
shifted rich, but you may also have a TD system cutting back too much fuel. Before
messing with FCU, remove and inspect all thermocouples - replace as required. Make
sure engine rigging is spot-on. Carry out yellow box check.
CIT bellows can be adjusted on flight line (if lead seal is still present on FCU) - 1 flat
decrease (clockwise) is +- 25°C. This will affect the fuel flow across the entire
schedule, so it may be necessary to reset NULL orifice.
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Excel file I made some time ago, performance accurate to about 0.2% most of the time.
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23 hours ago, Lkuest said:
Only thing I would add to pjvr99's response is consider resealing the low pitch stop too. I'd almost bet money the squeal check would fail.
yes, forgot about lps
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bad valve housing, or internal leak from dome seals, pitchlock regulator, or
prop retaining nut seals
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Also need LSGI and NGI TIT please
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what is NULL start TIT? what is TIT before correction light out? what
is rich/lean? where is NULL orifice set?
I need exact numbers .....
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no requirement for throttles to line up below cross-over: ONLY above
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Static leak. 1st thing to do is remove RGB fwd mag plug and ADH bottom
mag plug. Leave them open for 2hrs or so, then see which one is still
dripping. If ADH, start by replacing P/S filter. After that replace main oil
pump.
Lockheed Service News V18 N3 gives an excellent description of the
problem and trouble shooting
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ye i dont think system is de-activated. even though we dont have it on our birds, many QEC kits
have the wiring and c/plug. It's a standard check for us in test cell if a new engine will not rotate
when starter button is pressed to then turn on nacelle pre-heat. If it then rotates, we know the shop
got the starter and pre-heat c/plugs swapped around
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Yes, because it is flooding through the delivery nozzles and tubes as though the engine were running
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Main oil pump: pressure regulator poppet valve has cracked
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not sure why mech is ok, but it sounds like internal leak, maybe dome seals, pitchlock regulator
seals, prop retaining nut seals.
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Anyone know where I can get a copy of overhaul/repair manual
for fuel flow transmitter PNo: 8TJ64GBW2
Thanx
PJ
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Question for the test cell guys: when
checking light house breather pressure,
did you ever get negative (below 0"Hg)
readings? T56-56 says should be 0 to
11"Hg .....
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Dino, it sounds like you have a collapsing flexible line. Looks ok on the ground, but once oil is flowing through the inner wall is collapsing .
Other possibility is the follower in the tank may be damaged. I have had this a couple times
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Dino, it sounds like you have a collapsing flexible line. Looks ok on the ground, but once oil is flowing through the inner wall is collapsing .
Other possibility is the follower in the tank may be damaged. I have had this a couple times
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12 hours ago, Spectre623 said:
It don't appear to be an A model as it has fuel dump masts on the wing tips. I can only see one drain mast on the bottom of the engines also as the A model has two drain masts.
it is a C130B, redesignated C130BZ after glass cockpit, APU and
other upgrades and mods.
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Correct. Info at this time is they were starting up. 3 & 4 were running. When 2 was
rotated, the nose gear retracted
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Seems like it. we'll wait for the BoI to figure it out ...
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A/c 405 had a little oops at AFB Waterkloof this afternoon ....
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Back to work yesterday, all is still well in the land of sand. People obeying
the curfew, and while the infection rate may be troubling, situation is
under control. Government doing a sterling job of getting a handle on
the virus, getting free medical treatment for all, online distance learning
for schools, partial salaries guarenteed for companies that had to close.
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Fastest Engine Change
in C-130 Historical
Posted
Dont know about Gander ...... The SAAF back in the 80's did one in about 4hrs including
the engine run.