737-300/400/500
MAINTENANCE MANUAL
SEE A
1.
NYLON WASHER
2.
FITTING
3.
COUNTERSUNK WASHER
4.
BOLT
24. FITTING 5. HYDRAULIC UP-LINE
23. NYLON WASHER 6. UNION
22. WASHER
7. CLAMP
21. NUT
8. NOSE GEAR ACTUATOR
25. COTTER
PIN
9. ROD END
20. HYDRAULIC
DOWN-LINE
10. BOLT
19. RESTRICTOR
11. WASHER
18. PISTON 12. NYLON WASHER 17. WASHER 13. DRAG BRACE
UPPER LINK16. NUT
FWD
26. COTTER
PIN
15. NYLON WASHER
14. SWIVEL BEARING
A
Nose Gear Actuator Installation
Figure 401
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A
737-300/400/500MAINTENANCE MANUAL
TASK 32-33-11-404-004
2. Nose Gear Actuator Installation_______________________________
A. Consumable Materials
(1)
B00000 Solvent - PD-680 (AMM 20-30-41/201)
(2)
Hydraulic Fluid - BMS 3-11 (AMM 20-30-21/201)
(3)
D00633 Grease - BMS 3-33
(4)
D00013 Grease - MIL-G-23827
B.
Procedure
S 844-005
(1) Clean the bolt shanks and all mating surfaces of the actuator and the parts for the installation of the nose gear actuator (8) with solvent.
NOTE: Apply a thin layer of grease on each part.
____
S 424-007
(2)
Install the new O-rings in the union (6) and restrictor (19).
(a)
Install the union (6) in the actuator top port and restrictor in the bottom port of the actuator.
(b)
Fill the actuator with the hydraulic fluid.
S 614-008
(3)
While you extend the piston (18), fill the restrictor (19) until the piston is fully retracted.
(a)
Put a cap on the union (6) and restrictor (19).
(b)
Set the actuator in the clamp (7) with the rod end (9) down.
(c)
With the restrictor (19) on the right, move the hydraulic lines (5) and (20) into their respective union and restrictor.
NOTE: Do the steps D and E at the same time.
____
(d) Move the rod end (9) into the swivel bearing (14) in the upper link (13) of the drag brace.
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A
737-300/400/500MAINTENANCE MANUAL
(e)
Put the nylon washers (12) and (15) between the rod end (9) and the swivel bearing (14) on each side of the swivel bearing.
(f)
Install the lubricated bolt (10) with the washer (11) below the bolt head with the countersink to the bolt head.
(g)
Install the washer (17) and the nut (16).
(h)
Tighten the nut (16) 1500 to 1800 pound-inches.
NOTE: If you can not install the cotter pin in the specified
____ torque range, change the nuts or add one flat washer below the washer (11). Use the two methods if it is necessary.
(i)
Install the cotter pin (26).
(j)
Move the fitting (2) of the actuator into the fitting (24) on the top of the wheel well.
(k)
Install the nylon washer (1) and (23) between the fitting (2) on the actuator and the fitting (24).
(l)
Install the lubricated bolt (4) with the washer (3) below the bolt head with the countersink to the bolt head.
(m)
Install the washer (22) and the nut (21).
(n)
Tighten the nut 1500 to 1800 pound-inches.
NOTE: If you can not install the cotter pin in the specified
____ torque range, change the nuts or add one flat washer below the washer. Use the two methods if it is necessary.
(o)
Install the cotter pin (25).
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