20.
BOLT
22. FITTING 21. WASHER ASSEMBLY (4 LOCATIONS)
1. COVER
23.
BOLT
24.
WASHER
2
FWD 25. NUT
A-A
2
2. ATTACH BOLT (3 LOCATIONS) 1. COVER
18. COVER ATTACH BOLT3. INPUT ROD
(8 LOCATIONS) SEE B
4. STEERING METERING VALVE (2 LOCATIONS)
16A. SUPPORT 17. VALVE FITTING SEE CBRACKET
16. SUPPORT BRACKET 5. RETAINER NUT 16B. SUPPORT
1
(2 LOCATIONS)BRACKET
6.
FERRULE (QTY 2)
7.
O-RING
15. SHOCK (2 LOCATIONS)STRUT
8.
BACKUP RINGS (2 LOCATIONS)
9.
UPPER TRUNNION LOCKNUT
14. STEERINGFWD (2 LOCATIONS)COLLAR
10. STEERING CYLINDER
12. BRACKET ATTACH BOLT 11. LOWER TRUNNION LOCKNUTFWD(4 LOCATIONS)
12.
BRACKET ATTACH BOLT (3 LOCATIONS)
13.
UPPER SUPPORT PLATE 1
ON AIRPLANES INCORPORATING SB 32-1211
A
2
ON AIRPLANES INCORPORATING SB 32-1289
Steering Metering Valve Installation
Figure 401 (Sheet 1)
H57330
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A
737-300/400/500MAINTENANCE MANUAL
S 034-039
(2) Loosen the bracket assembly (31):
NOTE: This task will provide clearance to the steering metering
____
valve during the removal and installation.
(a)
Remove two AFT bolt (30) for the bracket assembly (31).
(b)
LOOSEN ONLY the FWD bolt (30) of the bracket assembly (31).
(c)
Move the aft end of the bracket assembly (31) to the left side.
S 024-040
(3)
Remove the steering metering valve (4):
(a)
Use a plastic or wooden spatula to remove a bead of sealant from the retainer nut (5) and the upper trunnion locknut (9).
(b)
Remove the lockwire from the retainer nut (5).
(c)
Use retainer nut wrench to loosen the retainer nut (5).
(d)
Remove the attach bolt (2) that holds the steering metering valve (4) to the upper support plate (13).
CAUTION: DO NOT REMOVE THE SWIVELS FROM THE STEERING METERING
_______ VALVE. IF THE SWIVELS ARE REMOVED FROM THE STEERING METERING VALVE, DAMAGE TO THE MATING SURFACES OF THE SWIVEL AND THE STEERING METERING VALVE CAN OCCUR.
CAUTION: MAKE SURE THE STEERING METERING VALVE IS REMOVED
_______ CAREFULLY. ALL CONTAMINATION, SUCH AS DIRT AND SAND, CAN GO THROUGH THE HYDRAULIC PASSAGES WHEN YOU REMOVE THE STEERING METERING VALVE.
(e)
Lift the steering metering valve (4) until its separated from the trunnions of the steering cylinder (10), and the upper support plate (13). 1) Continue this step until the steering metering valve (4)
passes between cables NWSA and NWSB.
(f)
Remove the steering metering valve (4) from the airplane.
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A
737-300/400/500MAINTENANCE MANUAL
26.
SWIVEL
27.
BOLT PORTS 2 AND 4 28. WASHER HYDRAULIC LINES (3 LOCATIONS)
32. STEERING DEPRESSURIZATION VALVE
NWSB
PORTS 1 AND 3
HYDRAULIC LINES
29. BRACKET ASSEMBLY
NWSA
RIG PIN 4
LOCATION
30.
BOLT (3 LOCATIONS)
31.
BRACKET
STEERING ASSEMBLY
METERING
VALVE CRANK
FWD
B
33. SWIVEL JAMNUT (4 LOCATIONS) (4 LOCATIONS)LOCKWIRE FWD
34. SWIVEL BOLT
C
Steering Metering Valve Installation
Figure 401 (Sheet 2)
H53785
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