(g)
Release the GND PROX/HYD GEN switch.
(h)
Install the relay K177 and the relay K199 in the P36 panel.
(i)
Install the relay K203 and the relay K263 in the P37 panel.
(j)
Close the P36 and the P37 panels.
S 845-019
(7) Put the Airplane back to its Usual Condition
(a)
Remove electrical power if it is not necessary (AMM 24-22-00).
(b)
Remove the door locks from the landing gear doors and close the doors (AMM 32-00-15).
(c)
Put the airplane back to the ground mode (AMM 32-09-02).
(d)
Do the activation procedure for the spoilers if you did the deactivation procedure (AMM 27-61-00).
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A
757 MAINTENANCE MANUAL
HYDRAULIC MOTOR GENERATOR REMOVAL/INSTALLATION
______________________________________________
1. General
_______
A. This procedure has two tasks. The first task removes the hydraulic motor generator (HMG) from the airplane. The second task installs the HMG on the airplane.
TASK 24-25-01-004-001
2. Remove the Hydraulic Motor Generator (Fig. 401)
____________________________________
A. References
(1)
12-25-01/301, Exterior Cleaning
(2)
29-11-00/201, Main Hydraulic Systems
(3)
32-00-15/201, Main Gear Door Locks
B. Equipment
(1) Main Gear Door Locks (Ref 32-00-15)
C. Access
(1)
Location Zones
143 Main Landing Gear Wheel Well (LH Side)
211 Control Cabin - Sect 41 (LH Side)
212 Control Cabin - Sect 41 (RH Side)
(2)
Access Panel
732 Main Landing Gear Body Door (LH Side)
D. Prepare for Removal
S 014-002
WARNING: REFER TO AMM 32-00-15/201 FOR LOCK INSTALLATION PROCEDURE.
_______ RAPID ACTION OF DOORS MAY INJURE PERSONS OR DAMAGE EQUIPMENT IF LOCKS ARE NOT INSTALLED CORRECTLY.
(1)
Open the left wheel well door and install the door lock (AMM 32-00-15/201).
S 614-003
(2)
Remove the pressure from the hydraulic systems and left reservoir (Ref 29-11-00).
S 864-004
(3)
Open this circuit breaker on the main power distribution panel P6 and attach DO-NOT-CLOSE tag:
(a) 6C3, HYD GEN CONT
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A
757
MAINTENANCE MANUAL
LEFT WHEEL WELL
SEE A HYDRAULIC MOTOR GENERATOR
ELECTRICAL
CONNECTOR,
SEE BHYDRAULICP2ELECTRICAL
RETURN
CONNECTOR, HYDRAULIC LINE
P1 PRESSURE
LINE
HYDRAULIC CASE LINE
FWD
HYDRAULIC
LEFT WHEEL WELL
HYDRAULIC SERVO
MOTOR VALVE
A
INBOARD
WHEEL WELL
ELECTRICAL
BULKHEAD
CONNECTOR J3
MOUNTING BOLT
GENERATOR WASHER NUT (2 LOCATIONS)
LOCATOR SUPPORT PIN
FWD
HYDRAULIC MOTOR GENERATOR
B
Hydraulic Motor Generator Installation
Figure 401
A07482
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757 MAINTENANCE MANUAL
E. Procedure
S 024-005
(1) Remove the HMG as follows:
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