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6) Connect the nut for the strain relief clamp on the backshell and tighten the nut by hand. 7) Tighten the strain-relief clamp assembly to the backshell with a TG-70 or BT-BS-611 strap wrench, or equivalent.
NOTE: The rubber strap on the strap wrench will not
____ hold the backshell if you apply too much force.
8) Align the harness with each half of the strain-relief
clamp.
a) Make sure the harness is straight.
9) Tighten the strain-relief clamp screws equally to engage
the harness in the clamp correctly.
10) Continue to tighten the screws until the clamp bar surfaces touch. a) The harness must not move in the clamp. b) If the harness is not tight in the clamp, repeat the
step to add the red rubber tape around the harness assembly. c) If the clamp bar surfaces do not touch, remove some of the red rubber tape. 11) Torque the screws to 20 pound-inches (2.26 newton-meters).
(b) For the connectors with the stainless steel backshells, do as follows: 1) Align the harness in each half of the strain-relief clamp.
a) Make sure the harness is straight.
2) Make sure the two braided shield groups go between the red rubber tape and the strain-relief clamp halves. a) Do this for each side of the clamp halves.
3) Tighten the strain-relief clamp screws equally to engage
the harness in the clamp correctly.
a) Make sure the braided shields are straight.
4) Continue to tighten the screws until the clamp bars touch. a) The harness must not move in the clamp. b) If the harness is not tight in the clamp, repeat the
step to add the red rubber tape around the harness assembly. c) If the clamp bar surfaces do not touch, remove some of
the red rubber tape. 5) Torque the screws to 20 pound-inches (2.26 newton-meters). 6) Fold the two groups of the braided shield over the
strain-relief clamps and into the rear groove of the backshell. 7) To hold the braided shield, install the hose clamp on the rear backshell groove over the braided shields. 8) Tighten and torque the hose clamp screws to 20 pound-inches
(2.26 newton-meters).
9) If necessary, cut the front side of the braided shield to the front of the clamp.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 768-143-N00
(15)
Do the adjustment/test procedure for the cable you repaired (AMM 71-50-00/501).
S 438-144-N00
(16)
Install the lacing tape to the repaired wire harness, as necessary.
S 438-145-N00
(17)
Install all the clamps that you removed.
H.
Put the Airplane Back to its Usual Condition
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WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Close the thrust reversers (AMM 78-31-00/201).
S 418-147-N00
(2)
Close the core cowl panels (AMM 71-11-06/201).
S 418-148-N00
(3)
Close the fan cowl panels (AMM 71-11-04/201).
S 448-149-N00
(4)
Do the activation procedure for the thrust reversers
(AMM 78-31-00/201).
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ENGINE VENTS AND DRAINS - DESCRIPTION AND OPERATION
___________________________________________________
1. General (Fig. 1)
_______
A. The engine drains collect and let the drain fluids fall overboard. The
drain distribution has a front and rear drain system.
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本文链接地址：747-400 AMM 飞机维护手册 动力装置 POWER PLANT 2(115)
