(b)
11D27, HYDRAULIC RAT AUTO PWR
S 285-066
(5) Make sure the RAT moves to the extended position in less than five seconds.
NOTE: The time starts when the circuit breaker is closed and stops
____
when the blade-lock plunger releases the turbine hub.
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MAINTENANCE MANUAL
(6) S 865-067Open these circuit breakers on the P11 panel: (a) 11D26, HYDRAULIC RAT AUTO CONT or HYDRAULIC RAT CONT (b) 11D27, HYDRAULIC RAT AUTO PWR
(7) S 865-068Put the system No. 1 air/ground relays back to the usual condition (Ref 32-09-02).
(8) S 865-069Close these circuit breakers on the P11 panel: (a) 11D26, HYDRAULIC RAT AUTO CONT or HYDRAULIC RAT CONT (b) 11D27, HYDRAULIC RAT AUTO PWR
(9) S 865-140Pressurize the right hydraulic system (AMM 29-11-00/201).
S 865-070
(10)
Hold the ground manual switch in the up (stow) position until the RAT is fully retracted.
S 285-071
(11)
Make sure the RAT moves to the retracted position in 10 | 5 seconds.
NOTE: The time starts when the ground manual switch is moved to the
____ up (stowed) position. The time stops when the RAT UNLOCKED light goes off.
S 215-072
(12)
Make sure the RAT compartment door is fully closed.
S 215-073
(13)
Make sure the RAT stays in the retracted position.
S 215-074
(14)
Make sure the RAT UNLOCKED light on the engine-start/RAT-control panel is off.
S 215-075
(15)
Make sure the RAT UNLOCKED and RAT messages are not shown on EICAS.
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S 865-076
(16) Decrease the pressure on the auxiliary No. 2 pitot system to zero (AMM 34-11-00/201).
F. Put the Airplane Back to Its Usual condition.
S 415-077
(1)
Install the access panel for the ground manual switch in the fairing on the aft bulkhead of the right wheel well.
S 415-078
(2)
Put the reservoir depressurization valves in the right and center systems back to the closed (non-vented) position (AMM 29-11-00/201).
S 415-079
WARNING:_______OBEY THE REMOVAL PROCEDURE FOR THE DOOR LOCKS. FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Remove the door locks and close the landing gear doors
(AMM 32-00-15/201).
S 865-080
(4)
Remove hydraulic power, if it is not necessary (AMM 29-11-00/201).
S 865-081
(5)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).
TASK 29-21-00-735-082
4. System Test - RAT Hydraulic Pump and Drive System (Fig. 501)
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