(2)
Make sure that the Green, Blue or Yellow hydraulic system (as applicable) is depressurized and put it in the maintenance configuration (Ref. TASK 29-00-00-864-001).
(3)
Put the warning notices in position to tell persons not to pressurize the Green, Blue or Yellow hydraulic system (as applicable):
-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the applicable hydraulic system.
(4)
Depressurize the reservoir of the Green, Blue or Yellow hydraulic system (as applicable) (Ref. TASK 29-14-00-614-001).
(5)
Put a container below the related check valve to collect hydraulic fluid.
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Subtask 29-00-00-410-067
B. Get access to the related check valve.
4. Procedure
_________ Subtask 29-00-00-020-050
A. Removal of the Check Valves
(1)
Check Valve Inline Assembly
(a)
Loosen the unions connected to the in- and output of the check valve.
(b)
Remove the check valve.
(2)
Check Valve Inline/Block Assembly
(a)
Remove the union connected to the check valve.
(b)
Remove the check valve from the related manifold.
(c)
Remove and discard the O-ring.
(3)
Check Valve Block Assembly
(a) Remove the check valve from the related manifold.
(b)
Remove and discard the O-ring and the back-up rings. Subtask 29-00-00-860-080
B.
Preparation for Installation
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Apply HYDRAULIC FLUIDS (Material No. 02-003) to the new O-rings and to the new back up rings.
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Subtask 29-00-00-420-050
C. Installation of the Check Valves
(1)
Check Valve Inline Assembly
(a) Position the check valves between the hydraulic lines and TORQUE the unions (Refer to Table I).
(2)
Check Valve Inline/Block Assembly
(a)
Install the check valve with a new O-ring into the manifold and TORQUE it (Refer to Table II).
(b)
Install the union to the check valve and TORQUE it (Refer to table II).
NOTE : Hold the check valve with a spanner to make sure that you
____ do not apply the higher torque to the manifold.
(3) Check Valve Block Assembly
(a)
Make sure that the back-up rings and the O-ring are in the correct position.
(b)
Install the check valve into the manifold and TORQUE it (Refer to table III).
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Subtask 29-00-00-910-053
D. Torque Values of the Check Valves (Inline Assembly) Table I _____________________________________________________________________________ THREAD SIZE | TORQUE VALUE | FIN
| m.daN (lbf. in.) _____________________________________________________________________________ INLET | OUTLET | INLET | OUTLET |
_____________________________________________________________________________
.4375-20UNJF-3A | .5000-20UNJF-3A | 1.526 - 1.639 | 1.978 - 2.204 | 1131GM
| |(135.00-145.00)|(175.00-195.00)|
| | | | 1524GM
| | | | 1704GM
| | | | 2040GM
| | | | 2131GM
| | | | 2467GM
| | | | 3131GM
| | | | 3188GM
_____________________________________________________________________________
.5625-18UNJF-3A | .7500-16UNJF-3A | 2.430 - 2.769 | 5.311 - 5.763 | 1020GM
| |(215.00-245.00)|(470.00-510.00)|
| | | | 1170GM
| | | | 1277GM
| | | | 1410GM
| | | | 1411GM
| | | | 2041GM
| | | | 2170GM
| | | | 2405GM
| | | | 2410GM
| | | | 2411GM
| | | | 3017GM
| | | | 3020GM
| | | | 3056GM
| | | | 3083GM
| | | | 3170GM
| | | | 3618GM
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