_
 a If you find no signs of corrosion:

_
 -Install the check valve (2029GM).
 b If you find signs of corrosion:

_ -Replace the check valve (2029GM).
 (g)
 Remove the thrust reverser check valves (3010KM1), (3010KM2) (Ref. TASK 29-11-35-000-001) and (Ref. TASK 29-13-35-000-001).

 (h)
 Examine the thrust reverser check valves (3010KM1), (3010KM2) for signs of corrosion.

 1 If you find no signs of corrosion:
_ a Install the thrust reverser check valves (3010KM1) and
_
 (3010KM2) (Ref. TASK 29-13-35-400-001).

 2 If you find signs of corrosion:
_ a Replace the thrust reverser check valves (3010KM1) and
_
 (3010KM2) (Ref. TASK 29-13-35-400-001).

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R **ON A/C 151-199, 301-399, 401-499,

 Subtask 12-32-29-281-054-A
 E. Repercussion of the Chemical Analysis
 (1) If the water contamination is from 0.8% to 1.3%:
 (a) Clean the hydraulic fluid of the applicable hydraulic system with the HYDRAULIC PURIFIER (HSPA181-380J) (Ref. TASK 12-36-29-615-001), (Ref. TASK 12-36-29-615-002), (Ref. TASK 12-36-29-615-003), - or reclaim the hydraulic fluid of the applicable hydraulic
 system with the hydraulic ground power cart
 (Ref. TASK 12-36-29-600-004),
 (Ref. TASK 12-36-29-600-005),
 (Ref. TASK 12-36-29-600-006),

 - or change the hydraulic fluid of the applicable hydraulic system (Ref. TASK 12-36-29-600-001), (Ref. TASK 12-36-29-600-002), (Ref. TASK 12-36-29-600-003).
 (b) Remove the LP/HP filter elements of the applicable hydraulic system and examine them for corroded particles (Ref. TASK 29-11-44-610-001) (Ref. TASK 29-11-45-610-001) (Ref. TASK 29-12-44-610-001) (Ref. TASK 29-12-45-610-001) (Ref. TASK 29-13-44-610-001) (Ref. TASK 29-13-45-610-001).
 1 If you find no corroded particles:
_ a Install the applicable LP/HP filter elements.
_
 2 If you find corroded particles:
_ a Install new HP/LP filter elements.
_
 b Continue with the procedures given in step (2) (b) and
_ subsequent and step (3) (b) and subsequent.
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 (2) If the water contamination is more than 1.3% and less than 2.5%:

 (a)
 Do the procedure given under step (1) and also:

 (b)
 Do the check of the internal leakage of the applicable hydraulic system (Ref. TASK 29-00-00-280-001) (Ref. TASK 29-00-00-280-002) (Ref. TASK 29-00-00-280-003).

 (c)
 Do the operational test of the wing tip brake and the pressure off brake (Ref. TASK 27-51-00-710-003) (Ref. TASK 27-81-00-710-002).

 (d)
 Remove the LP filter element of the applicable hydraulic system and examine them for corroded particles (Ref. TASK 29-11-44-610-001) (Ref. TASK 29-12-44-610-001) (Ref. TASK 29-13-44-610-001)

 1 If you find no corroded particles:
_ a Install the applicable LP filter element.
_
 2 If you find corroded particles:
_ a Install a new LP filter element.
_
 (e)
 Remove the bobbins of the HP manifold of the applicable hydraulic system (Ref. TASK 29-11-14-400-001) (Ref. TASK 29-12-14-400-001) (Ref. TASK 29-13-14-400-001) (Ref. TASK 20-23-21-911-001).

 (f)
 Examine the bobbins for signs of corrosion.

 1 If you find no signs of corrosion:
_ a Install the bobbins.
_
 2 If you find signs of corrosion:
_ a Replace the bobbins and the applicable component.
_
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 (g) If you have found corroded particles or signs of corrosion: 1 Continue with the procedures given in step (3) (b) and
_
 subsequent.

 (3) If the water contamination is more than 2.5%:
 (a)
 Do the procedures given in step (1) and step (2) (b) and
 subsequent and also:

 (b)
 Do the functional test of the ram air turbine
 (Ref. TASK 29-22-00-720-003).

 (c)
 Do the operational test of the damping measurement of the aileron (Ref. TASK 27-96-00-710-007).

 (d)
 Do the operational test of the damping measurement of the
 elevator
 (Ref. TASK 27-96-00-710-008).

 (e)
 Do the operational test of the rudder hydraulic actuation
 (Ref. TASK 27-24-00-710-001).

 (f)
 Remove the thrust reverser check valves (3010KM1), (3010KM2) (Ref. TASK 29-11-35-000-001) and (Ref. TASK 29-13-35-000-001).
　
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