V FT H
6
A. Install Balls In This Hole While Slowly
Rotating Worm Counterclockwise
B Worm Flange
210. Screw
211. Clamp
212. Ball Guides
213. Balls
Figure 12—Installing the Balls into the Rack Piston
15. Stub shaft (251) from valve body (250) (figure 10).
• Hold the assembly and lightly tap the stub
shaft against the bench until the shaft cap is
free from the valve body.
• Pull the shaft assembly until the shaft cap
clears the valve body by about 6 mm (174-
inch).
• Valve spool (252) and seals (230) and (231)
(figure 11).
16. Screws (210), clamp (211) and ball guide (212).
• Balls (213).
CLEANING AND INSPECTION
p j f l Clean
• All parts with solvent and blow dry.
y | Inspect (Figure 1)
1. Pitman shaft and side cover.
— Bushing.
— Bushing surfaces in the side cover (225) for
scoring. Replace the side cover assembly if
necessary.
— Sealing and bearing surfaces of the pitman
shaft (221) for roughness, nicks, or other dam
age. Replace the pitman shaft assembly if nec
essary.
— Pitman shaft (221) for excessive wear or scor
ing. Check the sector gear teeth for wear.
Replace the pitman shaft assembly if neces
sary.
210
214 Rack pjston
B6517
POWER STEERING 3B3-5
— Adjuster screw (222) threads for wear. The
adjuster screw must be free to turn with no
end play.
2. Rack piston.
— Worm (248) and rack piston (214) grooves and
all balls (213) for scoring. BOTH MUST BE
REPLACED as a matched assembly.
— Seal (216) and ring (217) for wear.
— Ball return guide halves (212) for cracks and
damage.
— Bearing (247) and races (246) for scoring and
excessive wear.
— Rack piston (214) teeth and external ground
surfaces for scoring or excessive wear. If
either condition exists, replace the rack piston
(214) and worm (248).
3. Adjuster plug.
— Spacer (235) for wear or cracks.
— Races (236, 238) for wear or scoring.
— Adjuster plug (240) threads for wear.
— Bearing (237) for wear or scoring.
— Needle bearing (241) for wear, pitting or scor
ing. Replace if necessary.
4. Valve and stub shaft.
— Seals (231) and rings (232).
— Shaft pin for wear or cracks. If excessively
worn or broken, replace the complete valve
and shaft assembly.
— Ground surface of the stub shaft (251). If a
crocus cloth cannot clean the nicks or burrs,
replace the entire valve assembly.
— Outside diameter of the valve spool and inside
diameter of the valve body (250). If a crocus
cloth cannot clean the nicks or burrs, replace
the entire shaft and valve assembly.
— The small notch in the skirt of the valve for
wear. If worn replace the complete valve
assembly.
— Valve spool inside the valve body (250). The
valve spool, when lubricated with steering flu
id, must rotate freely without binding. If binding
occurs, replace the complete valve and shaft
assembly.
ASSEMBLY
B
install or Connect (Figures 1, 4, and 10
through 14)
Tools Required:
J 4245 Snap Ring Pliers
J 6217 Valve Connector
J 21552 Ball Retainer
J 22407 Bearing Installer
J 8092 Bearing Driver
J 7079 Bearing Remover and Installer
J 8524-1 Driver
J 7624 Bearing Preload Spanner Wrench
1. Balls (213), alternately by color, in the rack piston
(214) (figure 12). Use J 21552 in the rack piston.
• Lubricate the 24 balls with power steering flu
id.
2. Balls (213), alternating by color, in the ball guide
(212) (figure 13).