STEERING
4203780 First Edition 7-17
7
NOTE
In the following assembly steps, it is important to align the
components for proper operation of the steering valve.
Use the scribed line for reference when assembling the
valve sections.
1. Install a new bearing (42), retaining ring (39), and
bearing cover seal (43) in the upper cover and jacket
assembly (40). Crimp the tube end in two places, 90°
apart.
2. Place the upper cover and jacket assembly (40) and
special bolts (41) in the service fixture.
3. Install the retaining ring (36) on the input shaft (38),
and install into upper cover and jacket assembly (40).
4. Install the upper cover plate (34) and gasket (35).
5. Assemble the seal spacer (33) and face seal (32).
6. Grease the upper cover plate (34), and install the
assembled seal, backup ring, and seal spacer.
NOTE
If the metering package was disassembled, proceed with
step 7. If the metering package was not disassembled or
a new one is being installed, proceed with step 19.
Figure 7-24
7. Place the drive plate (53) on a flat, lint-free surface.
8. Place the stator (52) on the drive plate (53) and
insert the rotor (51) into the stator.
9. Apply a small amount of grease to the drive link
spacer (50) and install in the rotor (51).
10. Place the commutator (48) on top of the rotor (51)
with the aligning pin holes facing up. Place a few
drops of oil in each recess of the commutator (48).
NOTE
Make sure the alignment pins (49) are pressed below the
surface of the commutator (48).
11. Align the five pin holes in the commutator (48) with
the holes in the rotor (51), and install the five
alignment pins (49).
12. Install the commutator ring (47) and commutator
cover (46), flat surface down with ring screw
recesses, stator screw slots, and cover screw holes
aligned. Install the 11 socket-head cap screws (45).
NOTE
Do not tighten the cap screws.
13. Place the metering ring (19) on a hard, flat surface.
14. Place the assembled metering package in the center
of the metering ring (19) with the commutator cover
down.
15. Place a 0.007 in. (0.18 mm) shim stock, 0.5 in.
(13 mm) wide by 1.5 in. (38 mm) long, in three
places, equal distance apart, between the metering
ring and metering package.
Figure 7-25: Metering Package Torque Sequence
16. Tighten the cap screws (45) twice in sequence to
11—13 lb-in. (1.2—1.5 N·m).
17. Remove the metering package and shims. Place the
drive link (14) large tang into the rotor. Turn the
metering package by hand to make sure there is no
binding.
NOTE
The metering package should rotate inside the stator. If
binding occurs, disassemble the metering package,
correct the cause, and repeat the assembly process.
18. Place the metering ring (19) on top of the upper
cover plate (34) with the alignment pin holes up.
45
46
47
48
49
50
51
52
TN1882
53
TN1438
To Next Page
Loading...
