12-5. STEERING CONTROL VALVE REPAIR (CONT)
Wipe all sealing surfaces on pump
clean and dry. Apply film of clean
hydraulic oil to all seals, except
quad ring seal as installed.
Assemble steering control valve
parts (1 through 28).
Install retainer (28), check ball (27),
seal (26), seat (25), seal (24), and
setscrew (23) in valve housing (4).
Install centering springs (21) in
Assemble spool (19) and sleeve (20)
so that spring slots line up at same
end. Rotate spool when sliding parts
together. Spool should rotate
smoothly in sleeve with fingertip force applied at spline end.
Install centering pin (18) through spool (19) and sleeve (20) assembly until it is flush at both
sides of sleeve (20).
Use care when installing centering pin, spool, and sleeve to prevent shifting of parts.
Failure to follow this precaution may cause damage to equipment.
Position centering pin (18), spool (19), and sleeve (20) as an assembly so that spline end of
spool enters valve housing (4) end opposite steering column side. Push centering pin, spool,
and sleeve assembly into valve housing until flush at gerotor housing end. Do not pull
assembly beyond this point to prevent centering pin from dropping into discharge groove of
Check for free rotation of centering pin (18), spool (19), and sleeve (20) by turning with light
fingertip force at spline end.