Boeing 737-600 - Subject 30-11-31 - WING ANTI-ICE TELESCOPING DUCT; Pageblock 30-11-31;401 - WING ANTI-ICE TELESCOPING DUCT - REMOVAL;INSTALLATION; Task 30-11-31-000-801 - Wing Anti-Ice Telescoping Duct Seal Removal; Subtask 30-11-31-860-001

WING ANTI-ICE TELESCOPING DUCT - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) Wing Anti-Ice Telescoping Duct Seals Removal
(2) Wing Anti-Ice Telescoping Duct Seals Installation
(3) Wing Anti-Ice Telescoping Duct Removal
(4) Wing Anti-Ice Telescoping Duct Installation.
B. The telescoping ducts connect the wing TAI manifold in the wing leading edge to each of the slat
spray tubes. Each telescoping duct assembly has an inner and an outer duct. The inner duct
attaches to the wing manifold and the outer duct attaches to the slat spray duct. There are seals
between the inner and outer ducts and seals where the inner duct swivel in the fixed leading edge.
The installation of all the telescoping ducts and seals are similar.
C. For this procedure, the leading edge slats are installed in the extended position. To replace the seals
with the slat removed, some steps of this procedure are not necessary.
TASK 30-11-31-000-801
2. Wing Anti-Ice Telescoping Duct Seal Removal
(Figure 401)
A. General
(1) This task gives instructions to remove the Wing Anti-Ice Telescoping Duct Seal.
B. References
Reference Title
27-81-00-480-801 Leading Edge Flap and Slat Locks Installation (P/B 201)
57-41-02-000-801 Leading Edge Access Panel Removal (P/B 201)
C. 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
D. 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
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
E. Prepare for the Removal
SUBTASK 30-11-31-860-001
(1) Extend the Leading Edge Slat.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-31
Page 401
D633A101-ILF Oct 15/2018
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