A
ANTI-ICING PRESSURE REGULATING VALVE (PRV)
FWD
A
OVERRIDE DEVICE
NORMAL OVERRIDE OVERRIDE DEVICE VALVE LOCKED
DEVICE STOWED VALVE LOCKED CLOSED PARTIALLY OPEN
A-A A-A A-A 689535
Inlet Cowl Anti-icing Pressure Valve - Manual Override Setting
Figure 201 (Sheet 1)
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MAINTENANCE MANUAL
1. OVERRIDE ASSEMBLY B 2. BOLT (6 LOCATIONS)
6. LOCKNUT
SEE B 4. POSITION 5. THREAD SHAFT INDICATOR PLATE 3. GASKETS
7. VALVE POSITION INDICATOR ASSEMBLY
8. ELECTRICAL CONNECTOR
VALVE CLOSED
C
VALVE PART OPEN
B
D
VALVE CLOSED
E
VALVE PART OPEN
ANTI-ICING PRESSURE REGULATING VALVE (PRV)
FWD
F
B
SEE D
SEE F
SEE D
SEE C
SEE E
SEE C
OVERRIDE DEVICE NORMAL OVERRIDE OVERRIDE DEVICE VALVE LOCKED DEVICE STOWED VALVE LOCKED CLOSED PARTIALLY OPEN B-B B-B B-B C3309A
Inlet Cowl Anti-icing Pressure Valve - Manual Override Setting
Figure 201 (Sheet 2)
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MAINTENANCE MANUAL
D. ON ENGINES WITHOUT SB 30-9534; Procedure
S 862-028
(1)
Open the circuit breakers on the overhead panel P11 to isolate the anti-icing PRV, and attach a DO-NOT-CLOSE tags.
S 012-006
(2)
Open the left fan cowl panel (AMM 71-11-04/401). Obey the
precautions that apply to Kevlar wrapping.
S 032-010
(3)
Remove the bolts (2) that hold the override assembly (1) to the valve body.
S 022-011
(4)
Remove the override assembly (1), the gaskets (3), and the position indicator plate (4) from the valve body.
S 432-018
(5)
Put the gasket (3) and the override assembly (1) on the valve body. Make sure the tongue is engaged with the groove in the valve head. Move the valve head manually, if necessary, to engage the tongue (Fig. 201, Detail A).
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本文链接地址：757 AMM 飞机维护手册 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(78)
