2-10 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Spoke Tightness Inspection
Check that all the spokes [A] are tightened evenly.
Standard spoke tightening torque is shown below. Over- or under-
tightening may cause breakage.
Check the rim runout.
If any spoke breaks, it should be replaced immediately. A
missing spoke places an additional load on the other spokes,
which will eventually cause other spokes to break.
Rim Runout Inspection
Place the jack under the frame so that the front/rear wheel off the
Special Tool -
Inspect the rim for small cracks, dents, bending, or warping.
If there is any damage to the rim, it must be replaced.
Set a dial gauge against the side of the rim, and rotate the rim to
measure axial runout [A]. The difference between the highest and
lowest dial readings is the amount of runout.
Set a dial gauge to the outer circumference of the rim, and rotate the
rim to measure radial runout [B]. The difference between the highest
and lowest dial readings is the amount of runout.
If rim runout exceeds the service limit, check the hub bearing ﬁrst.
Replace them if they are damaged. If the problem is not to the
bearings, correct the rim warp (runout). A certain amount of rim
warp can be corrected by recentering the rim. Loosen some spokes
and tighten others within the standard torque to change the position
of different parts of the rim. If the rim is badly bent, however, it should
Rim Runout (with tire installed)
0.5 mm or less
0.8 mm or less
m, 10 in