623F Wheel Tractor-Scraper Machine Systems Caterpillar

Steering Control Valve - Assemble

Usage:

623F 5EW

Assembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	1P-1859	Retaining Ring Pliers	1
B	154-9731	Thread Lock Compound	-

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

Clean all parts and inspect all parts. If any parts are worn or damaged, use new parts for replacement. Lubricate the O-ring seals with the lubricant that is being sealed.

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Illustration 1	g01035512

Apply Tooling (B) to plug (55). Install the O-ring seal and plug (55) to valve (51) .

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Illustration 2	g01035511

Install O-ring seal (53) to spacer (54). Install spacer (54) to steering control valve (1). Install O-ring seals (52) to valve (51). Install valve (51) to steering control valve (1) .

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Illustration 3	g01035509

Position the O-ring seals and cover (49) onto steering control valve (1). Install bolts (50) that secure cover (49) to steering control valve (1) .

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Illustration 4	g01035508

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install stem (48), spring (47), and shims (46) into cover (49). Install the O-ring seal and plug (45) into cover (49) .

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Illustration 5	g01035506

Install the O-ring seals and plugs (44) to spool valve (37) .

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Illustration 6	g01035505

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install shims (41), retainer (38), washer (42), spring (39), and retainer (43) onto spool valve (37). Install the washer and bolt (40) onto spool valve (37) .

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Illustration 7	g01035503

Install spool valve (37) into steering control valve (1). Install valve (36) into steering control valve (1). Install valve (33), shims (34), and springs (35) into steering control valve (1) .

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Illustration 8	g01035502

Install O-ring seals (32) onto cover (22). Install O-ring seal (31) onto valve (30). Install valve (30) into cover (22) .

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Illustration 9	g01035501

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Position cover (22) onto steering control valve (1). Install bolts (29) that secure cover (22) to steering control valve (1) .

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Illustration 10	g01035499

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Illustration 11	g01035500

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install poppet (23), spring (24), and spacer (25) into cover (22). Install O-ring seal (26) onto retainer assembly (27). Install retainer assembly (27) into cover (22). Install nut (28). Tighten nut (28) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).

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Illustration 12	g01035498

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install O-ring seals (20) and O-ring seal (15) onto check valve (12). Install the O-ring seal and stem (16) into check valve (12). Install O-ring seal (21) and plug (17) into check valve (12). Install check ball (19), spring (14) and spacer (18) into check valve (12). Use Tooling (A) to install retaining ring (13) into check valve (12) .

Repeat Step 12 for check valve (11) .

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Illustration 13	g01035496

Install check valves (11) and (12) into check and relief valve (5) .

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Illustration 14	g01035494

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Improper assembly of parts that are spring loaded can cause bodily injury.

To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install the O-ring seals and plug (6) into check and relief valve (5). Install the O-ring seals, the rings, and valves (10) into check and relief valve (5). Install check balls (9), springs (8), the O-ring seals, and plugs (7) into check and relief valve (5) .

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Illustration 15	g01160560

Position the O-ring seals and check and relief valve (5) onto steering control valve (1). Install check and relief valve (5) to steering control valve (1) .