F.
Install the Filter Element
S 644-029
(1)
Apply hydraulic lubricant or hydraulic fluid to the new O-rings, the backup rings, and the threads of the filter element case.
S 434-030
(2)
Install the new O-rings and the backup rings on the filter element case.
S 434-031
(3)
If it is necessary, install the O-rings and the backup rings in the filter element.
S 424-032
(4)
Install the filter element and the filter element case on the filter module.
S 434-033
(5)
Tighten the filter element case to 20-25 pound-feet.
S 434-034
(6)
Safety the filter element case with a lockwire.
G.
Install the Pressure Switches
S 644-035
(1)
Apply hydraulic lubricant or hydraulic fluid to the new O-ring and the threads of the pressure switch.
(2)
Install the new O-ring on the pressure switch.
S 434-036
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757 MAINTENANCE MANUAL
S 434-037
(3)
Remove the cap from the opening on the filter module.
S 424-038
(4)
Install the pressure switch on the filter module.
S 434-039
(5)
Tighten the pressure switch to 12-14 pound-feet.
S 434-040
(6)
Safety the pressure switch with a lockwire.
S 434-041
(7)
Connect the electrical connector to the pressure switch.
H. Install the Check Valve or the Differential Pressure Indicator
S 644-042
(1)
Apply hydraulic system lubricant or hydraulic fluid to the O-rings, the backup rings, and the threads on the component.
S 434-043
(2)
Install the new O-rings on the differential pressure indicator.
S 434-044
(3)
Install the new O-rings and the backup rings on the check valve.
S 434-045
(4)
Remove the cap from the opening on the filter module.
S 424-046
(5)
Install the check valve or the differential pressure indicator on the filter module.
(6)
Tighten the check valve to 45-50 pound-feet.
(7)
Tighten the differential pressure indicator to 15-20 pound-feet.
S 434-047
S 434-048
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A
757 MAINTENANCE MANUAL
I. Put the Airplane Back to Its Usual Condition
S 864-049
(1)
Push the indicator button, on the differential pressure indicator, until it aligns with the adjacent surface.
S 864-050
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11:
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