F. Procedure (Fig. 401)
S 144-021
(1)
Clean the surfaces for an electrical bond at the location of each bonding jumper (AMM 20-10-22/701).
S 434-022
(2)
Remove the caps from the hydraulic lines and the ports of the hydraulic pump (28).
S 644-023
(3)
Apply hydraulic lubricant or hydraulic fluid to the packings (5, 9, 12) and to the threads of the union (4) and the reducers (8, 11).
S 434-024
(4)
Install the union (4), the reducers (8, 11) and the packings (5, 9, 12) in the ports of the hydraulic pump (28).
S 034-025
(5)
ON AIRPLANES WITH VICKERS PUMPS;
do these steps:
(a) Look at the plug which is in the seep port of the hydraulic pump (28) to identify the type of the plug. There are two types of plugs; a solid plug or a plug with vents.
NOTE: The solid plug, P/N 73866, does not have vent holes.
____ You can identify the plug with vents by the two holes in the flat surfaces of the hexagonal area.
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29-11-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
CAUTION: YOU MUST REMOVE THE SOLID PLUG, P/N 73866, FROM THE SEEP
_______ PORT OF THE PUMP. IF YOU DO NOT REMOVE THIS PLUG, THE PUMP CAN BECOME TOO HOT.
(b) If a solid plug, P/N 73866, is in the seep port of the hydraulic pump (28), remove the plug and the O-ring from the hydraulic pump (28).
NOTE: If the plug has vent holes, you must not remove it
____
from the hydraulic pump (28).
S 434-054
(6) If necessary, install the vibration isolators (18) on the mounting plate (21).
NOTE: All four vibration isolators must be the same part number.
____
S 434-028
(7)
Install the washers (23) and the bolts (22) to attach the vibration isolators (18) to the mounting plate (21).
S 434-055
(8)
Install hydraulic pump (28) on the vibration isolators (18).
S 614-029
(9)
Fill the hydraulic pump (28) with hydraulic fluid.
S 434-030
(10)
Install the supply hose (6) on the hydraulic pump (28).
S 424-031
(11)
Put the hydraulic pump (28) in its position.
NOTE:____The weight of the hydraulic pump (28) is 45 pounds. Make sure you hold the hydraulic pump (28) sufficiently while you install the fasteners.
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