(c)
Put the support rods in the clips on the inner side of the APU access doors.
(d)
Make sure the insulation covers correctly attach to the APU compartment firewall.
(e)
Close the APU access doors.
(f)
Close the latches on the APU access doors.
S 868-039
(15)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6 Main Power Supply Pannel
1) 6K18 APU ALTN CONT
(b)
P83 Panel, E8 AFT Equipment Center
1) APU PRIMARY CONT
S 868-040
(16) Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 panel.
TASK 49-14-00-358-036
3. External Jacket or Cable Braid Repair_____________________________________
A. General
(1)
This procedure gives a repair for a cables with damage to the braided shield or the insulation jacket. If the cable is damaged more than the limits that follow, you cannot use this procedure.
(a)
The insulation jacket shows the braided shield no more than 50% around the cable.
(b)
The insulation jacket shows the braided shield no more than 2 inches (51 mm) along the cable.
(c)
Less than 80% of the metal strands on the braided shield are damaged at one location.
B.
Consumable Materials
(1)
G00057 Tape, Anti Chafing - Scotch 63
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C.
D.
E.
A
747-400
MAINTENANCE MANUAL
(2)
G00058 Tape, Anti Chafing - Scotch 65 (optional to Scotch 63)
(3)
G00152 Tape, Insulating - Scotch 4202
(4)
Tape, Lacing - P&WC P/N 3112698-01References
(1)
WDM 49-11-16, 49-11-17, 49-11-18
(2)
SSM 49-11-01Access
(1)
Location Zone 317 APU Compartment-Forward of the Air Inlet Plenum on the APU engine, LH
318 APU Compartment-Forward of the Air Inlet Plenum on the APU engine, RH.
(2)
Access Panel 317AL APU Access Door 318AR APU Access Door
Procedure
S 868-056
(1)
Make sure the APU control switch on the P5 panel is OFF and attach a DO-NOT-OPERATE tag.
S 868-057
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Main Power Supply Panel
1) 6K18 APU ALTN CONT
(b)
P83 Panel, E8 Aft Equipment Center
1) APU PRIMARY CONT
S 018-058
(3)
Open the APU access doors:
(a)
Open the latches on the APU access doors.
(b)
Open the APU access doors.
(c)
Engage the support rods for the APU access doors.
S 358-037
WARNING:_______DO NOT USE HEAT GUNS, SOLDERING GUNS OR SOLDERING IRONS. THIS EQUIPMENT CAN CAUSE AN EXPLOSION. AN EXPLOSION CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
CAUTION:_______DO NOT HIT THE INLET PLENUM WITH YOUR HANDS OR TOOLS. THIS CAN CAUSE DAMAGE TO THE INLET PLENUM. IF YOU CAUSE DAMAGE TO THE INLET PLENUM, IT WILL BE NECESSARY TO REPLACE IT.
(4)
Repair the APU wire harness.
S 018-035
(5)
Remove the lacing tape and the harness clamps from the wire harness to get sufficient access to the damaged cable.
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A
747-400 MAINTENANCE MANUAL
S 148-034
(6) Clean the cable 3 inches (76 mm) on each side of the damage.
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