(1)
Location Zone
731 Main Landing Gear (Left)
741 Main Landing Gear (Right)
D.
Prepare for Removal
S 494-002
(1)
Make sure the downlocks for the nose and main landing gear are installed (AMM 32-00-20/201).
S 864-003
(2)
Remove the pressure from the left hydraulic system and the hydraulic reservoir (AMM 29-11-00/201).
E.
Procedure to Remove the Main Gear Downlock Actuator
(1)
Disconnect the hydraulic lines from the actuator clevis pin.
(2)
Put a plug in the hydraulic lines and the actuator fittings.
S 034-006
(3)
Remove the bolt (1) to disconnect the rod end of the actuator from the upper downlock link (Fig. 401, View A-A).
S 034-004
S 434-005
32-32-02
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757 MAINTENANCE MANUAL
ACTUATOR DOWNLOCK ASEE
B
DOWNLOCK ASSEMBLY C
SHOCK STRUT PIN C 8. CLEVIS B
INBD A FWD
A DOWNLOCK ACTUATOR A
1. BOLT
DOWNLOCK UPPER LINK ACTUATOR 2. DOWNLOCK
7. PIN 3. WASHER 4. NUT
A-A
Main Gear Downlock Actuator Installation
Figure 401 (Sheet 1)
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MAINTENANCE MANUAL
ANTIROTATION
ASSEMBLY
B-B
10. PACKING (2 LOCATIONS) 12. REDUCER
11. UNION
C-C
Main Gear Downlock Actuator Installation
Figure 401 (Sheet 2)
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S 034-025
(4)
Remove the pin (9), nut (5), and washer (6) from the clevis pin (8) at the head end of the actuator (Fig. 401, View B-B).
S 034-022
(5)
Remove the bolts to disconnect the antirotation bracket from the downlock spindle (View B-B).
S 034-007
(6)
Remove the actuator clevis pin assembly (8) to disconnect the head end of the actuator from the downlock spindle (Fig. 401, View B-B).
S 024-008
(7)
Remove the downlock actuator (2).
S 034-009
(8)
If the downlock actuator that will be installed does not have hydraulic fittings installed in its ports, do the steps that follow:
(a)
Remove the union (11) and the reducer (12) from the actuator which was removed from the airplane.
(b)
Identify the union (11) and reducer (12) with a label to make sure they are installed in the correct location on the new actuator.
(c)
Discard the packing (10).
TASK 32-32-02-404-010
3. Install the Main Gear Downlock Actuator (Fig. 401)_______________________________________
A. References
(1)
AMM 12-12-01/301, Hydraulic Systems
(2)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
B.
Consumable Materials
(1)
D00153 Hydraulic Fluid - Fire resistant,
BMS 3-11
(2)
D00633 Grease - BMS3-33 (Preferred)
(3)
D00013 Grease - MIL-G-23827 (Alternative)
(4)
D00054 Lubricant, Hydraulic Systems - MCS-352
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C. Parts
~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT |FIG | ITEM | ................................................................................ | 401 | 1 | Bolt | 32-32-02 | 01 | 50 | | | 2 | Downlock Actuator | | | 65, 67| | | 3 | Washer | | | 55 | | | 4 | Nut | | | 60 | | | 5 | Nut | | | 20 | | | 6 | Washer | | | 15 | | | 7 | Pin | | | 45 | | | 8 | Clevis Pin Assembly | | | 90 | | | 9 | Pin | | | 10 | | | 10 | Packing | | | 80 | | | 11 | Union | | | 70 | | | 12 | Reducer | | | 75 | 2......…........…...................................…...........…....….........1
D. Access
(1)
Location Zone
731 Main Landing Gear (Left)
741 Main Landing Gear (Right)
E.
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