TUBE AS 1157590 - Caterpillar

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Remove O-ring seal (5) .
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(6) Spacer plate (7) Star (8) Drive (9) Drive spacer
Remove drive spacer (9), drive (8), star (7), and spacer plate (6) from the housing.
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Remove O-ring seal (10) .
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Remove spool and sleeve assembly (11) .Note: Do not bind the spool and sleeve assembly in the housing. Rotate the spool and sleeve assembly slowly in order to remove the assembly from the housing.Note: During removal, the pin may slide outward from the spool and sleeve assembly which will lock these parts in the housing. If this occurs, center the pin and continue to remove the spool and sleeve assembly.
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Remove pin (12) from the spool and sleeve assembly (11) .
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Remove spool (13) from the control end of sleeve (14) .
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Remove centering springs (15) from spool (13) .Note: The steering metering unit uses six centering springs.
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Tapped plug (16) retains the manual steering check valve.
Remove tapped plug (16) .
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Manual steering check valve
Remove roll pin (18) and ball (17) .
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Anticavitation valves
Remove two roll pins (20) and two balls (19) from the bolt holes by tipping the housing.
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(21) Seal (22) Spacer (23) Needle bearing (24) Spacer
Remove spacer (24), needle bearing (23), spacer (22), and seal (21) .
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Pry retaining ring (25) from the housing.
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(25) Retaining ring (26) O-ring seal (27) Bushing (28) Dust seal
Remove dust seal (28), bushing (27), and O-ring seal (26) .
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Remove five hydraulic fittings (29) in order to complete disassembly of the steering metering unit.