110, 230, and 450 Series Steering Control Units
9
17 Install retaining ring in housing (figures 19 and 20). After installing
ring, pry around ring circumference with screwdriver to properly seat
ring in groove.
18 Clamp housing in vise, as shown in Figure 21. Clamp lightly on
edges of mounting area; do not overtighten jaws.
Note: Check to insure that spool and sleeve are flush or slightly below
14 hole surface of housing.
Attention: Clean upper surface of housing by wiping with palm of
clean hand. Clean each of the flat surfaces of meter section parts in a
similar way just before reassembly. Do not use cloth or paper to clean
surfaces.
19 Install 72,6 mm [2.86 in.] ID seal in housing (figure 22).
20 Install anti-cavitation valves and manual steering check valve (if
used) in holes, as shown in figure 22.
21 Install spacer plate. Align bolt holes in spacer plate with tapped
holes in housing.
22 Rotate spool and sleeve assembly until pin is parallel with port
face (figure 23). Install drive, making sure drive is engaged with pin.
To assure proper alignment, mark drive as shown in figure 25,
reference B. When marking drive, note relationship of slotted end of
drive to splined end of drive.
25 mm [1 inch] Max.
Pin
Drive
Pin Parallel
with Port Face
Port Face
Standard Torque Low Torque
*
Teflon Seal
Bushing
with
Identification
Groove
Screwdriver
Dust Seal
Seal
Seal Gland
Bushing
Quad Ring
Seal
Retaining
Ring
3 Piece
Seal
*
Low Input Torque Seal Package — One Piece Teflon
Seal use on -002 Unit and is Replacement Seal for 3
Piece Seal on Older Low Input Torque Units.
1 Piece
Seal
Cross Section of Old and New Seal
ReassemblyFigure 20
Figure 21
Figure 22
Figure 23
Spring
Early Units
*
Built
with these Parts
Retainer Plug
O-ring Groove this
Side -002 Unit —
Old Spacer Plate
has No O-ring
Groove
Seal
Ball
*
Anti-Cavitation Valves
for Cylinder Ports
Ball 6,35 mm
[.250 in.] OD
Ball (2)
4,762 mm
[.1875 in.] OD
Roll Pin (1)
34,92 mm
[1.375 in.] L
Roll Pin (2)
40,00 mm
[1.575 in.] L
Manual Steering
Check Valve
(when applicable)