FAN AS-REVERSE 2W2172 - Caterpillar

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Remove plug (27), O-ring seal (26), spring (25) and ball (24).
Remove plug (31), O-ring seal (30), spring (29) and ball (28).
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Remove pressure reducing valve (32) and adapter (35).
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Remove O-ring seals (33) and backup rings (34) from pressure reducing valve (32).
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Remove O-ring seal (36) from adapter (35).
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Remove cylinder crossover relief valve (37), cylinder load shuttle valve (40) and secondary pump relief valve (43).
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Remove O-ring seals (38) and backup rings (39) from cylinder crossover relief valve (37).
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Remove O-ring seals (41) and backup rings (42) from cylinder load shuttle valve (40).
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Remove O-ring seals (44) and backup rings (45) from secondary pump relief valve (43).
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Remove diverter valve (46) and adapter (49).
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Remove O-ring seals (47) and backup rings (48) from diverter valve (46).
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Remove O-ring seal (50) from adapter (49).
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Remove valve spool assembly (52) and plug (51).
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Disassemble valve spool assembly (52) by removing the following components from stem (53): bolt (61), washer (60), retainer (59), spring (58), spring (57), washer (56), retainer (55) and shims (54).
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Use a hex wrench to remove orifice (62), as shown.
Remove the remaining plugs from the steering control valve in order to check the O-ring seals.