Assembly Procedure
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. All disassembly and all assembly procedures must be performed on a clean work surface and in a clean hydraulic area. Keep cleaned parts covered and protected at all times.
Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure.
Note: Apply a light film of hydraulic oil to all components before assembly.
- Install five hydraulic fittings (29) .
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| Illustration 1 | g00768708 |
- Install O-ring seal (26), bushing (27), dust seal (28), and retaining ring (25) .
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| Illustration 2 | g00768656 |
(25) Retaining ring (26) O-ring seal (27) Bushing (28) Dust seal | |
- Install seal (21), spacer (22), needle bearing (23), and spacer (24) .
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| Illustration 3 | g00768646 |
(21) Seal (22) Spacer (23) Needle bearing (24) Spacer | |
- Install centering springs (15) into spool (13) .
Note: The steering metering pump uses six centering springs.
Note: The centering spring notches must face away from the splined end of the spool.
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| Illustration 4 | g00768628 |
- Install spool (13) into sleeve (14) .
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| Illustration 5 | g00768619 |
- Insert pin (12) through spool and sleeve assembly (11). The pin should be flush with both sides of the sleeve.
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| Illustration 6 | g00768615 |
- Insert spool and sleeve assembly (11) into the housing. Insert the spool and sleeve assembly until the spool and sleeve assembly are flush with the end of the housing.
Note: Do not insert the spool and sleeve assembly beyond this point. The pin may become stuck in the discharge groove.
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| Illustration 7 | g00768594 |
- Check for free rotation of the spool and sleeve assembly by turning the assembly with fingertip force at the splined end.
- Rotate the spool and sleeve assembly until the pin is parallel with port face (30) .
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| Illustration 8 | g00768970 |
(8) Drive (12) Pin (30) Port face | |
- Install drive (8).
- Install two balls (19) and two roll pins (20) .
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| Illustration 9 | g00769135 |
(6) Spacer plate (10) O-ring seal (17) Ball (18) Roll pin (19) Ball (20) Roll pin | |
- Install ball (17) and roll pin (18) .
- Install the tapped plug in order to retain the check valve for manual steering.
- Install O-ring seal (10) and spacer plate (6) .
Note: Align bolt holes in the spacer plate with the tapped holes in the housing.
- Install O-ring seal (5), and star (7) in gerotor housing (4) .
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| Illustration 10 | g00768980 |
(4) Housing (5) O-ring seal (7) Star | |
- Make a mark (B) on drive (8) parallel to pin (12) .
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| Illustration 11 | g00769023 |
(4) Housing (7) Star (8) Drive (12) Pin | |
- Align star valleys (A) with marked drive (B), pin (C), and port face (D) .
Note: Proper alignment of the star is critical in order to ensure proper operation of the steering metering pump. The star valleys must align with the pin. Align bolt holes without disengaging the gerotor from the drive.
- Install drive spacer (9) into the star.
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| Illustration 12 | g00769062 |
(2) End cap (3) O-ring seal (9) Drive spacer | |
- Install O-ring seal (3) .
- Install end cap (2) .
- Install seven bolts (1) into end cap (2) .
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| Illustration 13 | g00768563 |
- Tighten bolts to 17 N·m (150 lb in). Use the final tightening sequence that is represented in Illustration 14 in order to tighten the bolts to 27.5 ± 2.5 N·m (243 ± 22 lb in).
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| Illustration 14 | g00769070 |
End By: Install the steering metering pump. Refer to Disassembly and Assembly, "Steering Metering Pump - Install" in this manual.