(b)
Bend the wire end in the direction of the engine.
1) The sharp ends are dangerous, and they can shake in the air.
(10)
Do not put the wires in these locations:
(a)
Where they can go across other wires.
(b)
Where they can cause a blockage of the flow.
B.
Procedure
S 422-031-N00
(1) Do these steps when you install the lockwire (Fig. 205).
(a)
Make sure the unit is tight.
(b)
Make sure the wire holes are in the correct position.
(c)
When there are two or more units, make sure the holes in the units align.
(d)
Do not tighten the unit more than the limit or loosen the unit to get the holes to align correctly. 1) The holes must align when you tighten the units.
(e)
If it is not possible to get the holes to align, install a different unit.
(f)
The maximum distance between the tension points is six inches, unless a distance is specified.
(g)
Do not attach a continuous wire to more than four units unless it is specified.
(h)
If there are more than four units in a series, and a note ("Lockwire Together") is specified, do these steps: 1) Break the sequence into groups of two, three, of four
units. 2) Attach a wire to each unit in the group. 3) Do not attach the series with one continuous length of wire
unless it is specified.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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(i) The maximum length of wire in a sequence is 24 inches (61 cm), unless it is specified.
CAUTION: REMOVE THE BURRS AND SHARP EDGES FROM THE DAMAGED HOLES.
_______
DAMAGE TO THE WIRE CAN OCCUR.
(j)
Put the lockwire through the supplied holes.
(k)
If there is no hole, do these steps: 1) When you attach the wire to an adjacent part, make sure the
wire does not cause a malfunction. 2) If the lockwire holes are damaged, make a different hole.
S 912-029-N00
(2) Lockwire dimensions and specifications:
(a) AS3214-XX is AMS 5689, AISI 321 iron base alloy, annealed wire
(QQ-W-423 is equivalent). ~........................................................... | Part Number | Size | ............................................................. | AS3214-01 | 0.0195 | 0.0015 inch (0.50 | 0.04 mm) | ............................................................. | AS3214-02 | 0.0315 | 0.0015 inch (0.80 | 0.04 mm) | ............................................................. | AS3214-03 | 0.039 | 0.002 inch (1.00 | 0.05 mm) | ............................................................. | AS3214-04 | 0.049 | 0.002 inch (1.25 | 0.05 mm) | 2...............…...........................................1
NOTE: This material is corrosion and heat resistant.
____
S 912-032-N00
(3) A correctly installed lockwire has these properties (Fig. 206):
(a)
Use these examples when you install the lockwire on most of the engine components.
(b)
Attach the lockwire to the bolts and the screws in a sequence (Examples 1 through 4). 1) Make sure the braid twist is in the direction that pulls
the loop down around the head of the part.
(c)
Use the same procedure to install lockwire on the nuts of hoses, electrical couplings, and tube couplings.
(d)
When a lockwire seal is specified, do these steps:
1) Attach the seal to the lockwire with a crimp.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EXAMPLE 1 EXAMPLE 2 EXAMPLE 3 EXAMPLE 4
EXAMPLES 1,2,3, AND 4 APPLY TO ALL TYPES OF BOLTS, FILLISTER HEAD SCREWS, SQUARE HEAD PLUGS, AND OTHER SIMILAR PARTS WHICH ARE LOCKWIRED SO THAT THE LOOSENING TENDENCY OF EITHER PART IS COUNTERACTED BY TIGHTENING OF THE OTHER PART. THE DIRECTION OF TWIST FROM THE SECOND TO THE THIRD UNIT IS COUNTER-CLOCKWISE TO KEEP THE LOOP IN POSITION AGAINST THE HEAD OF THE BOLT. THE LOCKWIRE ENTERING THE HOLE IN THE THIRD UNIT WILL BE THE LOWER LOCKWIRE, AND BY MAKING A COUNTERCLOCKWISE TWIST AFTER IT LEAVES THE HOLE, THE LOOP WILL BE SECURED IN PLACE AROUND THE HEAD OF THAT BOLT.
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