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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
(b) Remove the nuts and the washers that attach the shutoff valve to the upper shroud.
NOTE: The bolts are attached to the upper shroud.
____
(c) Remove the shutoff valve from the upper shroud through the horizontal web opening.
TASK 49-51-21-404-006
3. Cooling Air Shutoff Valve Installation (Fig. 401)
______________________________________
A. Consumable Materials
(1)
A00027 Sealant - BAC5010, Type 60
(2)
D00013 Grease - MIL-G-23827
(3)
G00001 Agent - Parting
B. References
(1) AMM 49-51-21/501, Cooling Air Shutoff Valve
C. Access
(1)
Location Zones
101 Control Cabin, LH
205 Electronic Compartment
701 Tail Compartment
703 APU Compartment
(2)
Access Panels
1201 Electronic Equipment Access Door
3701 Stabilizer Compartment Access Door
D. Procedure
S 864-016
(1) Make sure the switch and the circuit breaker are set correctly:
(a)
Make sure the APU master switch, on the P5 forward overhead panel, is in the OFF position with a DO-NOT-OPERATE tag attached.
(b)
Make sure this circuit breaker is open with a DO-NOT-CLOSE tag attached: 1) E3-3 Electrical Shelf, APU Control Unit
S 864-017
(2) Make sure the electrical connectors are disconnected:
(a)
Make sure the electrical connector is disconnected from the stabilizer trim electric actuator.
(b)
Make sure the electrical connector is disconnected from the autopilot stabilizer trim servo.
S 424-007
(3) Install the shutoff valve:
(a) Apply a thin layer of the grease to the shaft on the shutoff valve.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(b) Apply the parting agent to the mating surface of the shutoff valve.
(c) (d) Apply the sealant to the mating surface between the shutoff valve and the cutout of the duct assembly.Install the valve through the horizontal web opening and align the bracket holes with the bolts in the upper shroud. 1) Make sure the shutoff valve tightly fits over the air inlet duct.
(e) Install the nuts and the washers that attach the shutoff valve to the bracket.
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