Eaton Electrical Char-Lynn 450, Char-Lynn 230, Char-Lynn 110 User Manual
®
Char-Lynn
Power Steering
Repair Information
No. 7-309
August, 1999
110, 230 and 450 Series
Steering Control Units
001 002
110, 230, and 450 Series Steering Control Units
Cast
End
Cap
1
O-ring Groove
2
3
O-ring Groove
4
7
3
5
Special Tools Available
600057-000 Spring Installation Tool
5422-000 12 Point Drive Socket ( 5/16 in.) — -001
64489-000 6 Point (E10) Torx Drive Socket ( 5/16 in.) — -002
Note: Current -002 uses a Hex Head bolt – 1/2 inch across flats
Low Input Torque
Spring (4)/Spacer (2)
Package
Standard Input Torque
Spring (6)
Package
6
31
Cap Screws 12 Pt. Drive No. 5389-XXX, Spacer Plate 7970, and End
Cap, 8438 are -001 Parts. If any one of these parts needs replacing, order
Kit listed in chart (below) by displacement. Kit parts will update your
steering control unit to -002 design level.
Note: When installing kit parts, gerotor outer ring will have to be turned
so the o-ring groove faces the end cap (gerotor star—if the spline is full
length ring and star can be turned together, but if star has a
partial spline turn ring only, this partial splined star must
remain unturned). Replacement spacer plate will have a
o-ring groove, position this groove toward gerotor.
23
9
3
30
12
11
11
11
22
9
10
See Note Below (lower right)
8
U
13
14
13
Previous Manual
Steering Check Valve
V
W
X
Y
17
15
18
19
16
Z
Ref.
Description
No.
1 Cap Screw, Hex Head
2 Cap, End
3 Seal, 72,6 mm [2.86 in.] ID
4 Gerotor
5 Spacer
6 Plate, Spacer
7 Drive
8 Housing
9 Sleeve, Control/Spool, Control
Pin, Centering
10
2
Note: All housing valves are factory adjusted on
assembled units to a code designation and are
not to be changed. This housing (with specified
valve pressure settings), the mating spool, and
the sleeve are not practical replacement parts.
Ref.
Description
No.
11 Spring, Centering
12 Spring, Spacer
13 Bearing Race
14 Bearing, Needle Thrust
15 Seal, 47,2 mm [1.86 in.] ID
16 Seal, 24,9 mm [.98 in.] ID
17 Seal, Quad Ring, 26,7 mm [1.05 in.] ID
18 Bushing, Seal Gland
19 Ring, Retaining
22 Ball, 6,35 mm [.250 in.] OD
Ref.
Description
No.
23 Pin, Roll, 34,92 mm [1.375 in.] Length
30 Ball, Check
31 Pin, Roll, 40,00 mm [1.575 in.] Length
*
U
Retainer, Check Ball
V
Ball, Check
Seal — 7,6 mm [.30 in.] ID
W
Seat, Check Ball
X
Seal — 9,2 mm [.36 in.] ID
Y
Screw, Set
Z
110, 230, and 450 Series Steering Control Units
Tools required for disassembly and reassembly.
— Screwdriver (102-152 mm [4 in. - 6 in.] long, x 3 mm [118 in.]
wide flat blade).
— 6 Point (E10) Drive part No. 64489-000* or 1/2 inch socket for
current hex head cap screws.
— Breaker bar wrench.
— Torque wrench (30 Nm [275 lb-in] capacity).
— Plastic hammer or rubber hammer.
— 1/4 inch Hex key.
— #10-24 machine screw, 38 mm [1-1/2 in.] long.
— Needle nose pliers.
The following tool is not necessary for disassembly and reassembly,
but is extremely helpful.
Spring installation tool 600057
*
Tools available—by special order—through our service department.
*
3
110, 230, and 450 Series Steering Control Units
Disassembly
Cleanliness is extremely important when repairing a steering
control unit. Work in a clean area. Before disconnecting lines,
clean port area of unit thoroughly. Use a wire brush to remove
foreign material and debris from around exterior joints of the unit.
Although not all drawings show the unit in a vise, we recommend that
you keep the unit in a vise during disassembly. Follow the clamping
procedures explained throughout the manual.
Gerotor (Meter) End
25 mm
[1 inch]
Max.
-002 Steering
Control Unit
with 6 Point
(E10) Drive Screws
or Current Hex
Head Screws
Figure 1
2 Remove 5/6 in. cap screws and sealing washers, if used.
3 Remove end cap.
4 Remove seal.
Seal Groove
this Side
-002 Unit.
See Note
Meter (Gerotor)
Seal
Inside Front
Cover (Page 2)
Spacer
Figure 3
5 Remove meter. Be careful not to drop star.
6 Remove seal.
7 Remove drive spacer. Spacer is not used on some models. Refer
to Parts Information No. 6-321 to determine if spacer is used on your
particular model.
1 Clamp unit in vise, meter end up. Clamp lightly on edges of port
face sides (see figure 1). Use protective material on vise jaws.
Housing distortion could result if jaws are overtightened.
Seal washers are not used with 6 point (E10) drive
screws or current hex head screws and -002 end cap
(-002 end cap does NOT have the o-ring groove)
Cap Screw
Seal
Figure 2
4
Drive
Spacer Plate
Seal
Figure 4
8 Remove drive.
9 Remove spacer plate.
10 Remove seal from housing.
11 Remove housing from vise.
O-ring Groove
this Side -002
Unit — Old
Spacer Plate
has No O-ring
Groove
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