Group 20, Drive Axle
SM 765, Nov ’06 Adjustment • 20-6-1
Preloading and adjustment of hub
taper roller bearing
Required tool for assembly
− Lock nut assembly adaptor
− Torque wrench, 20kgf.m setting
− (-) Screwdriver
− Rubber hammer
How to measure the space
Measurement when the space isn't assembled
• Use measuring master to measure the space.
• Press-fit the outer ring of bearing to the housing.
• Assemble the taper roller bearing to carrier shaft,
set the preload adjustment nut up to 2000kgf.m and
measure and record with dial gauge.
Measurement when the space is assembled
• Assemble the spacer based on the above method
and apply the preload.
• Re-measure the assembly product with dial gauge.
• When compare the measured value with gauge, if
the space is plus value based on the gap, insert
spacer with small width and if it is minus value,
insert the space with big width. Apply different
spacer based on the measured value.
Adjustment order of preloading
• Place the bearing cup into final housing and press-
fit it to the housing with assembled jig.
• Locate the measuring spacer as shown in the
above figure.
(Refer to the figure 14 for measurement of space)
• Place the taper roller bearing as shown in the fig-
ure 15.
• Press-fit the bearing with press and pressurizing
jig.
• Hit it with plastic hammer and rotate the wheel
adaptor two or three times.
Set the torque value by tightening the preloading
adjustment nut.
(Torque wrench, torque setting: 20kgf.m)
Lock nut
Measuring master
Lock nut
Oil Seal
Taper roller
bearing
Spacer
Carrier ass'y
Section 6
Adjustment
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