(2)
Make sure that the GROUND LOCK SLEEVE is installed on each MLG door actuating cylinder.
(3)
Put the adjustable access platform below the applicable wing.
(4)
Open the applicable access panels:
-
for the left wing, open 191BB, 191BT, 521BT, 522AB, 522CB, 522FB, 522JB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB
-
for the right wing, open 192BT, 192FB, 621BT, 622AB, 622CB, 622FB, 622JB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB.
(5)
Put the access platform in the applicable MLG bay.
4. Procedure
_________
(Ref. Fig. 602/TASK 27-84-00-991-001, 603/TASK 27-84-00-991-002)
Subtask 27-84-00-110-050
A. Preparation for Inspection
(1) Clean the component to be inspected with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
Subtask 27-84-00-210-050
R B. Detailed Visual Inspection of the Slat Transmission System
(1) Examine the Power Control Unit (PCU):
(a) Make sure that the PCU is installed correctly.
R (b) Use a flashlight and a mirror and examine the external surfaces of the PCU for:
-cracks
-corrosion
-signs of leakage
-satisfactory surface protection.
(c) Make sure that the Line Replacement Units (LRU) are correctly installed. The LRUs are the:
-
two valve blocks
-
two inlet filters
-six solenoid valves
-
two hydraulic motors
-
two Pressure-Off Brakes
-Feedback Position Pick-off Unit
-Instrumentation Position Pick-off Unit.
Slat System - Component Location
Figure 602/TASK 27-84-00-991-001
1EFF : ALL 1 27-84-00 Page 606
1 1 Feb 01/98
1 1
1CES 1
Steady Bearings and Torque Shafts - Component Location
Figure 603/TASK 27-84-00-991-002
(2) Examine the Torque Shaft Assemblies:
(a) Make sure that the torque shaft assemblies are correctly installed and that the spring clip safeties the pin correctly.
R (b) Use a flashlight and mirror to examine the torque shafts and input joints for:
-distortion
-dents
-cracks
-corrosion
-satisfactory surface protection.
(c)
Make sure that the connections between the torque shafts and input joints are tight.
(d)
Do an inspection of the flange bolts for corrosion protection. If the corrosion protection is unsatisfactory, apply a new layer of STORAGE PRESERVATION (Material No. 15-007).
(3) Examine the Steady Bearing Assemblies:
(a) Make sure that the steady bearing assemblies are correctly installed.
R (b) Use a flashlight and a mirror to examine the steady bearing assemblies for:
-cracks
-corrosion
-satisfactory surface protection.
(4) Examine the Gearbox Assemblies:
NOTE : The gearbox assemblies are units filled with grease and are
____ not hermetically sealed units. It is normal for this grease to have some oil separation. The external surfaces of the gearbox assemblies may be moist with this separated oil as they are not sealed units. However, any separated oil in the unit that touches the grease will be changed back during operation. The oil separation will decrease during in-service operation until the lubricant is in a condition that is stable. This is normal and will not cause damage to the unit.
(a) Make sure that the gearbox assemblies are correctly installed.
R (b) Use a flashlight and a mirror and examine the outer sides of the gearbox assemblies for:
-cracks
-corrosion
-signs of leakage
-satisfactory surface protection.
(5) Examine the actuator assemblies:
NOTE : The actuators are vented units filled with grease. It is
____ normal for this grease to have some oil separation. The external surfaces of the actuator assemblies may be moist with this oil as they are not a hermetically sealed unit. However, any oil separation in the unit that touches the grease will be changed back during in-service operation and the lubricant is in a condition that is stable. This is normal and will not cause damage to the unit.
(a) Make sure that each actuator is correctly installed.
R (b) Use a flashlight and a mirror to examine the external surfaces of the actuators for:
-cracks
-corrosion
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