Bulk Cargo Compartment Insulation Installation
Figure 401 (Sheet 3)
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747-400
MAINTENANCE MANUAL
CLIP
G
CLIP SHARP POINT OF STUD IN AREAS OF POTENTIAL PERSONNEL SAFETY HAZARD
Bulk Cargo Compartment Insulation Installation
Figure 401 (Sheet 4)
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D. Remove the Insulation Blankets
S 034-006
(1)
Remove the clips from the stud fasteners which attach the insulation blanket to the structure.
S 034-007
(2)
Remove the stud fasteners without clips which attach the insulation blanket to the structure.
S 034-024
(3)
Discard the clips and stud fasteners if they are damaged.
S 024-008
(4)
Remove the insulation blanket.
S 034-025
(5)
Discard the velcro tape and the double-back tape if it is loose or damaged.
S 034-026
(6)
Discard the dacron cord used in the floor of the compartment if it is broken.
TASK 25-55-03-404-009
3. Bulk Cargo Compartment Insulation Installation (Fig. 401)
______________________________________________
A. Consumable Materials
(1)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
(2)
G00000 Dacron Cord - MIL-T-43435B Type II, Finish C, Size 3
(3)
G00348 Tape - Permacel No. P-621 2.00-inch wide
(4)
G00347 Tape - Permacel No. P-55, double back 1.0-inch wide
(5)
G00290 Tape - Permacel No. P-32, 1/2-inch wide
(6)
G00000 Tape - Velcro, BMS 8-285, Type II, 1.0 inch wide
(7)
G00009 Compound - Corrosion Preventive BMS 3-23
B. References
(1)
25-55-01/401, Bulk Compartment Cargo Restraint and Divider Nets
(2)
25-55-02/401, Bulk Compartment Ceiling and Sidewall Linings
(3)
51-24-13/701, Water Displacing Corrosion Preventive Compound
(4)
52-36-00/001, Bulk Cargo Door
C. Access
(1) Location Zones
145 Bulk Cargo Compartment, Left
146 Bulk Cargo Compartment, Right
147 Area Below Bulk Cargo Compartment, Left
148 Area Below Bulk Cargo Compartment, Right
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747-400 MAINTENANCE MANUAL
D. Procedure
S 014-039
CAUTION: LET THE SOLVENTS FROM THE CORROSION-INHIBITING COMPOUND (CIC)
_______ FULLY EVAPORATE. IF CIC GETS ON THE INSULATION BLANKETS BEFORE THE SOLVENTS EVAPORATE, THE INSULATION BLANKET WILL BECOME LESS FLAME-RESISTANT. APPLY CIC (BMS 3-23, BMS 3-26, BMS 3-29, OR EQUIVALENT) ONLY TO METALLIC AIRPLANE COMPONENTS.
(1) If Corrosion-inhibiting Compounds (CIC) contamination of insulation blankets occurs, adhere to the following steps:
(a)
Replace the insulation blanket if CIC contamination occurs along a seam.
(b)
For all areas except along seams, remove the CIC with Biogenic SE377C, Aliphatic Naphtha, Citra-Safe, or equivalent.
NOTE: If the CIC cannot be removed, replace the blanket.
____
S 434-041
(2) In order to prevent Corrosion-inhibiting compounds (CIC) contamination of insulaton blankets, obey the following steps prior to blanket installation:
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