F. Location Zones
Zone Area
520 Subzone - Left Wing: Leading Edge, Fwd of Front Spar, Outboard of Strut and
Nacelle Gap Cover Area
620 Subzone - Right Wing: Leading Edge, Forward of Front Spar, Outboard of Nacelle
Strut
G. Access Panels
Number Name/Location
521DB Lower Leading Edge Access Panel - Slat Station 71.38
521KB Lower Leading Edge Access Panel - Slat Station 188.12
521RB Lower Leading Edge Access Panel - Slat Station 307.75
522CB Slat No. 4 - Cove Skin
523CB Slat No. 3 - Cove Skin
524CB Slat No. 2 - Cove Skin
621DB Lower Leading Edge Access Panel - Slat Station 71.38
621JB Lower Leading Edge Access Panel - Slat Station 188.14
621QB Lower Leading Edge Access Panel - Slat Station 307.75
622CB Slat No. 5 - Cove Skin
623CB Slat No. 6 - Cove Skin
624CB Slat No. 7 - Cove Skin
H. Inner Telescoping Duct Installation
SUBTASK 30-11-31-420-009
(1) Install the o-ring [11], o-rings [12], or o-ring [13], as necessary, on the swivel joint of the inner
telescoping duct [1].
NOTE: You can use silicone compound, D00254, on the o-rings to make installation easier.
(2) Do this to install the inner telescoping duct [1]:
(a) Put the bearing [10] and bearing [14] on the ends of the inner telescoping duct [1].
(b) Put the inner telescoping duct [1] into position.
(c) Install the bolts [16] and washers [15].
NOTE: Do not tighten the bolts [16] until after the supply duct [6] is installed.
(3) Do this to install the supply duct [6]:
(a) Clean the mating surfaces of the supply duct [6] tab and the support assembly (SWPM
20-20-00).
1) Use a cotton wiper, G00034, made moist with alcohol, B00130.
2) Immediately dry the surfaces with a new cotton wiper.
(b) Apply a bead of sealant, A50231, along the top edge of the support assembly and the
bearings.
(c) Put the supply duct [6] into position.
(d) Install the bolts [17], bolts [18] and washers [15].
(e) Tighten the bolts [16], bolts [17] and bolts [18].
(f) Do a bonding check from the supply duct [6] tab to the support assembly.
1) Use an intrinsically safe approved bonding meter, COM-1550, to measure a
maximum of 0.00070 ohms (0.70 milliohms).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-31
Page 469
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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