STEERING CONTROL VALVE REPAIR - continued

TM 10-3930-673-34

12-5. STEERING CONTROL VALVE REPAIR (CONT)

d. Assembly.

NOTE

Wipe all sealing surfaces on pump

clean and dry. Apply film of clean

hydraulic oil to all seals, except

quad ring seal as installed.

(1)

Assemble steering control valve

parts (1 through 28).

(a)

Install retainer (28), check ball (27),

seal (26), seat (25), seal (24), and

setscrew (23) in valve housing (4).

(b)

Install centering springs (21) in

sleeve (20).

(c)

Assemble spool (19) and sleeve (20)

TR00589

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.

(d)

Install centering pin (18) through spool (19) and sleeve (20) assembly until it is flush at both

sides of sleeve (20).

CAUTION

Use care when installing centering pin, spool, and sleeve to prevent shifting of parts.

Failure to follow this precaution may cause damage to equipment.

(e)

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

valve housing.

(f)

Check for free rotation of centering pin (18), spool (19), and sleeve (20) by turning with light

fingertip force at spline end.

12-12