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®
No. 7-309
Char-Lynn August, 1999
Power Steering
Repair Information
110, 230 and 450 Series
001 002
Steering Control Units
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110, 230, and 450 Series Steering Control Units 1 O-ring Groove Low Input Torque 12 2 Previous Manual Spring (4)/Spacer (2) Steering Check Valve Package 3 U V W O-ring Groove X 4 Y Standard Input Torque Z 11 Spring (6) 11 7 3 Package 11 6 23 22 9 3 9 8 5 13 14 13 17 15 18 19 31 16 30 10 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 See Note Below (lower right) Note: Curren
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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 necessar
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110, 230, and 450 Series Steering Control Units Disassembly 2 Remove 5/6 in. cap screws and sealing washers, if used. Cleanliness is extremely important when repairing a steering control unit. Work in a clean area. Before disconnecting lines, 3 Remove end cap. clean port area of unit thoroughly. Use a wire brush to remove 4 Remove seal. foreign material and debris from around exterior joints of the unit. Seal Groove Although not all drawings show the unit in a vise, we recommend that t
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110, 230, and 450 Series Steering Control Units Disassembly Low Input Old 3 Piece Teflon Seal Torque Ball Steering Manual Steering Check Valve (when applicable) Control Dust Seal Units Roll Pin Spring Early Units Built * Spacers (2) with these Parts Ball Retainer Plug Spring Ball Springs (4) Roll Pin Replacement Anti-Cavitation Valves * Teflon Seal (1 Piece) for Cylinder Ports Figure 5 Special Seal Gland Marked with Groove for Identification 12 Carefully remove anti-cavitation valves and manu
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110, 230, and 450 Series Steering Control Units Disassembly Low Input Torque Spring/Spacer Package Standard Input Torque Bearing Race Needle Thrust Bearing Seal Figure 9 17 Remove two bearing races and needle thrust bearing and seal from Figure 11 spool and sleeve assembly. 19 Push pin from spool and sleeve assembly. 20 Push spool partially from control end of sleeve, then carefully remove centering springs from spool by hand (Figure 11). Low input torque unit uses four centering springs and tw
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110, 230, and 450 Series Steering Control Units Disassembly/Reassembly 23 Screw a #10-24 machine screw into end of check ball seat. Then lift seat out of housing by pulling on screw with pliers. Spring Slot 24 Remove two seals from check valve seat. Assemble Input Shaft 25 Tip housing to remove check ball and check ball retainer. End First Input Shaft End 26 Do not remove any valves other than manual steering check valve assembly and anti-cavitation valve assembly. All other valves are fact
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110, 230, and 450 Series Steering Control Units Disassembly 12 Place housing on clean lint free colth. Install 47,2 mm [1.86 in.] ID seal in housing (figure 18). spring slots of spool and sleeve. Position centering springs on bench so that extended edge is down and arched center section is together (figure 15). Next, with spring notches facing sleeve, insert one end of entire spring set into spring installation tool. 8 Compress extended end of centering spring set and push into spool and sle
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110, 230, and 450 Series Steering Control Units Reassembly Roll Pin (2) Early Units Built * 40,00 mm with these Parts [1.575 in.] L Standard Torque Low Torque * O-ring Groove this Spring Screwdriver Teflon Seal Side -002 Unit — Retainer Plug Old Spacer Plate Dust Seal Ball has No O-ring Retaining Groove Ring Manual Steering Check Valve Seal Gland (when applicable) Bushing Roll Pin (1) Quad Ring 34,92 mm Seal Ball (2) [1.375 in.] L Seal 4,762 mm Seal [.1875 in.] OD Ball 6,35 mm [.250 in.] OD
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110, 230, and 450 Series Steering Control Units Reassembly Seal washers are not used with 6 point (E10) or hex head screws and -002 end cap (-002 end cap does not have a o-ring groove). Seal Seal Groove this End Cap Side -002 Unit. See Note inside Front Cover Cap Screw (page 2) Seal Actual Item No. 5 Displacement Spacer 3 cm /r 3 Figure 24 [in /r] Length mm [in.] 45 [ 2.8] None 60 [ 3.6] None 23 Lubricate and install 72,6 mm [2.86 in.] ID seal in spacer plate or 75 [ 4.5] None gerotor (
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110, 230, and 450 Series Steering Control Units Resassembly 6 4 ® Char-Lynn Eaton Corp. Hydraulics Div. Eden Prairie, MN 55344 1 2 000-0000-000 00/00/00 000-0000-000 7 3 5 Figure 27 28 Install 7 dry cap screws (and seal washers if applicable – see figure 26) in end cap. Pretighten screws to 17 Nm [150 lb-in], then torque screws to 25-30 Nm [225-275 lb-in] in sequence shown in figure 27. 11
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110, 230, and 450 Series Steering Control Units ® Date Code How to Order Replacement Parts Char-Lynn 00 00 Product number Each Order Must Include the Following: Week of Last 1. Product Number 4. Part Number Eaton Corp. Hydraulics Div. Year 01 Number(s) Eden Prairie, MN 55344 Thru 52 of Year 2. Date Code 5. Quantity of Parts Product Number 3. Part Name 000 0000 000 For additional literature contact Eaton Corp. Hydraulics Product Line Product Engineering Division 15151 Highway 5 Eden Prairie,
