(c)
Examine the filter elements for pieces of the filter screen from orifice plug in the checkout module.
(d)
If you find pieces of the filter screen, replace the checkout module.
S 134-068
(2)
Clean the filter elements with an ultrasonic cleaner which contains solvent.
S 964-069
(3)
If you cannot remove the contamination or if the filter elements has damage, replace the filter elements.
S 644-070
(4)
Apply hydraulic lubricant or hydraulic fluid to the O-rings, the backup retainers, and the threads of the filter caps.
S 434-071
(5)
Install a new O-ring on the filter cap.
S 434-072
(6)
Use the assembly bullet as follows to install the O-ring and the backup retainers on the filter elements (Fig. 401).
(a)
Use the assembly bullet BLS-34533 on the pressure filter element.
(b)
Use the assembly bullet BLS-34529 on the case drain filter element.
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757 MAINTENANCE MANUAL
S 434-073
(7) Use the sizing die as follows to compress the backup retainers into the groove of the filter elements (Fig. 402).
(a)
Use the sizing die DAS-34534 on the pressure filter element.
(b)
Use the sizing die DAS-34530 on the case drain filter element.
S 424-074
(8)
Install the filter elements in the checkout module.
S 434-075
(9)
Install the filter caps on the checkout module.
S 434-076
(10)
Tighten the filter cap for the pressure filter to 30-35 pound-feet.
S 434-077
(11)
Tighten the filter cap for the case drain filter to 15-20
pound-feet.
S 434-078
(12)
Safety the filter caps with a lockwire.
G. Put the Airplane Back to its Usual Condition
S 864-079
(1)
Pressurize the center hydraulic system and the reservoir
(AMM 29-11-00/201).
S 734-080
(2)
Do the system test procedure for the hydraulic pump and drive system of the ram air turbine (AMM 29-21-00/501).
S 214-081
(3)
Make sure there are no leaks at the pressure switch on the checkout module.
S 114-082
CAUTION: QUICKLY CLEAN THE AREA AROUND THE CHECKOUT MODULE OF ALL
_______ HYDRAULIC FLUID. HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE AIRPLANE EQUIPMENT.
(4) Clean all hydraulic fluid from the area (AMM 12-25-01/301).
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S 094-083
WARNING: USE THE PROCEDURE IN AMM 32-00-15 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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