Installation Instructions

7 STEERING
SERVICING
B193P041
B193P042
B1700·B21 00·B2400 WSM, 11772
Clearance Between Steering Gear Box and Ball Nut
1. Measure the steering gear box cylinder I.D. with a cylinder
gauge.
2. Measure the ball nut a.D. with an outside micrometer, and
calculate this clearance.
3. If the clearance exceeds the allowable limit, replace the
steering gear box or ball nut assembly.
Factory spec.
0.035
to 0.079 mm
Clearance
between 0.001 to 0.00311 in.
steering gear box and
ball
nut
Allowable limit
0.15mm
0.0059 in.
Gear box bore I.D.
Factory spec.
56.005
to 56.030 mm
2.2049
to 2.20591 in.
Ball
nuta.D.
Factory spec.
55.951 to 55.970 mm
2.2080
to 2.20354 in.
Clearance Between Valve Housing and Sleeve
1. Measure the valve housing I.D. with a cylinder gauge and the
sleeve a.D. with an outside micrometer, and calculate this
clearance.
2.
Ifthe clearance exceeds the allowable limit, replace the valve
housing
or sleeve assembly.
II1II IMPORTANT
• Check to see if the slipper seals of sleeve do dot have
excessive wear.
Factory spec.
0.17
to 0.28 mm
Clearance between
0.0067
to 0.0110 in.
valve housing and
sleeve
Allowable limit
0.40 mm
0.0157 in.
Sleeve
a.D. Factory spec.
35.77 to 35.83 mm
1.4083
to 1.4106 in.
Valve housing I.D. Factory spec.
36.00
to 36.05 mm
1.4173to 1.4193 in.
Axial Play of Ball Nut Assembly
1. Secure the ball nut assembly in a vise.
2. Set a dial indicator
with its finger on the worm shaft of the
ball nut assembly.
3. Move the worm shaft axially and measure the play.
4. If the play exceeds the allowable limit, replace the ball nut
assembly.
Factory spec.
OtoO.02mm
Axial play
of ball nut
o to 0.00079 in.
assembly
0.04mm
Allowable limit
0.00157 in.
E7-S8