7 STEERING
2270P70130
2270P70140
2270P70150
B2410 • B271 0 •
B291
0 WSM, 12271
Clearance between Valve Housing and Sleeve
1.
Measure the valve housing I.D. with a cylinder gauge and the
sleeve O.D. with
an
outside micrometer, and calculate this
clearance.
2.
If
the clearance exceeds the allowable limit, replace the valve
housing or sleeve assembly.
• IMPORTANT
• Check to see if the slipper seals of sleeve do not have
excessive wear.
Factory spec.
0.17 to 0.28 mm
Clearance between
0.0067 to 0.0110 in.
valve housing and
0.40 mm
sleeve
Allowable limit
0.0157 in.
12270870170
Axial Play of Rack (Piston) Assembly
1.
Secure the rack (piston) assembly in a vise.
2.
Set a dial indicator with its finger on the worm shaft of the rack
(piston) assembly.
3.
Move the worm shaft axially and measure the play.
4.
If
the play exceeds the allowable limit, replace the rack (piston)
assembly.
Factory spec.
oto 0.02 mm
Axial play
of
rack (piston)
oto 0.00079 in.
assembly
Allowable limit
0.04 mm
0.00157 in.
12270870180
Backlash between Sector Gear Shaft and Rack (Piston)
1.
Attach the pitman arm having no play.
2.
Set a dial indicator with its finger on the pitman arm
3.
Move the pitman arm lightly, and measure the deflection.
4.
If
the measurement
is
not within the factory specification, adjust
the backlash with the adjusting screw.
Backlash between sector
Less than 0.30 mm
gear shaft and rack Factory spec.
0.0118 in.
(piston)
12270870190
7-S12
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