TM 5-3895-379-23-2
0222
ASSEMBLY - Continued
NOTE
Apply a thin coat of clean hydraulic oil on control spool and sleeve prior to installation.
8.
Assemble control spool (Figure 13, Item 1) with control sleeve (Figure 13, Item 2). The spool should turn freely
in the sleeve. Put the spring slots in each component in alignment. Some spool and sleeve sets may have
alignment marks on them. In this case, align the marks.
9.
Install centering spring kit (Figure 13, Item 3) to control spool (Figure 13, Item 1). Be sure the springs are
centered. Install pin (Figure 13, Item 4) that holds the spool (Figure 13, Item 1) and sleeve (Figure 13, Item 2)
together and ensure pin is flush on each side of the spool and sleeve after installation.
1, 2
1
2
3
4
4
1
M0678SWR
Figure 13. Steering Control Unit (SCU) Assembly.
NOTE
When spool and sleeve assembly is installed in the control housing, be sure it is not tilted out
of position. The assembly should be pushed gently into place with a slight rotating action,
keeping pin nearly horizontal. The spool and sleeve assembly should be installed until it is
flush with the meter end of the housing (side with fourteen holes in the end). Be sure pin does
not drop into the discharge groove in the center housing. Be sure the spool and sleeve
assembly turns freely in the center housing.
10.
Position center of spool (Figure 14, Item 5) and sleeve (Figure 14, Item 6) assembly in a vertical position. Install
two bearing races (Figure 14, Item 4) and needle thrust bearing (Figure 14, Item 9).
11.
Install two new O-rings (Figure 14, Items 2 and 3) and back-up ring (Figure 14, Item 1) over the spool
(Figure 14, Item 5) and sleeve (Figure 14, Item 6) with a twisting motion.
12.
Position steering control housing (Figure 14, Item 8) in a vertical position with the steering column facing down.
Install spool (Figure 14, Item 5) and sleeve (Figure 14, Item 6) as an assembly into control housing.
13.
Install new seal (Figure 14, Item 7) in control housing (Figure 14, Item 8).
03/15/2011Rel(1.8)root(maintwp)wpno(M00160)
