S 032-005
(1)
Disconnect the remote sense tube from the valve at the primary metering section.
(a)
Put a cap on the remote sense tube.
(2)
Remove the valve screws from the airplane skin.
(3)
Remove the relief valve.
(4)
Remove the gasket from the valve.
S 032-006
S 022-007
S 032-008
TASK 21-32-01-402-009
3. Install the Positive Pressure Relief Valve (Fig. 201)__________________________________________
A. Consumable Materials
(1) C00259 - Primer BMS 10-11, Type I
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MAINTENANCE MANUAL
POSITIVE PRESSURE RELIEF VALVES
Positive Pressure Relief Valve Maintenance Practices
Figure 201 (Sheet 1)
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757
MAINTENANCE MANUAL
BOLT (8 PLACES) GASKET
INTEGRAL SENSE LINE
SEE D
PRIMARY
METERING
SECTION
SEE C
FILTER
FILTER COVER
POSITIVE PRESSURE RELIEF VALVE
B
SEAL
REDUCER
SENSE LINE AIRPLANEELBOW SKIN
GASKET
POSITIVE PRESSURE RELIEF VALVE
INTEGRAL SENSE LINE
PRIMARY METERING SECTION D
C
Positive Pressure Relief Valve Maintenance Practices Figure 201 (Sheet 2)
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MAINTENANCE MANUAL
(2)
B00316 - Solvent - Aliphatic Naphtha, TT-N-95
(3)
C00584 - Primer BMS 10-79, Type II
(4)
A00247 - Sealant Chromate Type BMS 5-95
(5)
C00033 - Enamel BMS 10-60, Type II, Grey Gloss, Boeing Color 707
(6)
G00507 - Lintfree Cloth, commercially available
B.
References
(1)
AMM 06-46-00/201, Entry, Service and Cargo Doors, Access Doors and Panels
(2)
AMM 25-50-02/401, Sidewall Lining
C.
Access
(1)
Location Zone
153 Aft cargo compartment (Left)
D.
Install the relief valve.
S 162-010
(1)
Use the solvent to remove the old sealant from the airplane skin. Do not use too much solvent.
S 162-011
(2)
Use a lintfree cloth to make the airplane skin clean and dry.
S 392-037
(3)
Apply the sealant to the smooth side of the gasket.
S 422-012
(4)
Put a new gasket and the relief valve into position against the airplane skin.
(a)
Make sure the holes in the valve and the gasket align with the holes in the airplane skin.
S 432-013
CAUTION:_______DO NOT GET ANY SEALANT INTO THE INTEGRAL SENSE TUBE. IF ANY SEALANT GETS INTO THE INTEGRAL SENSE TUBE, IT COULD CAUSE THE POSITIVE PRESSURE RELIEF VALVE TO FAIL.
(5)
Install the screws into the airplane skin.
(a)
Apply sealant to each screw before you install it.
(b)
Tighten each screw to 35 pound-inches
S 822-014
(6) If the end of the integral sense tube is more than .02 inches past the airplane skin, then do the steps that follow:
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