Huansong UTV 700 2009, Руководство по обслуживанию

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GENERAL INFORMATION
1-29
to the inner bearing race (Figure 44).
2. When installing a bearing as described in Step 1, some type of driver is required. Never strike the
bearing directly with a hammer or it will damage the bearing. When installing a bearing, use a
piece of pipe or a driver with a diameter that matches the bearing inner race. Figure 45 Shows
the correct way to use a driver and hammer to install a bearing.
3. Step 1 describes how to install a bearing in a
case half or over a shaft However, when installing
a bearing over a shaft and into the housing at the
same time, a tight fit is required for both outer and
inner bearing races. In this situation, install a
spacer underneath the driver tool so that pressure
is applied evenly across both races. See Figure
46. If the outer race is not supported as shown,
the balls will push against the outer bearing race
and damage it
Interference fit
1. Follow this procedure when installing a bearing
over a shaft. When a tight fit is required, the
bearing inside diameter is smaller than the shaft.
In this case. Driving the bearing on the shaft using
normal methods may cause bearing damage.
Instead, heat the bearing before installation. Note
the following:
a. Secure the shaft so it is ready for bearing
installation.
b. Clean all residues from the bearing surface
of the shaft. Remove burrs with a file or
sandpaper.
c. Fill a suitable pot or beaker with clean
mineral oil. Place a thermometer rated
above 120
℃
(248°F) in the oil. Support the
thermometer so it does not rest on the
bottom or side of the pot.
d. Remove the bearing from its wrapper and
secure it with a piece of heavy wire bent to
hold it in the pot. Hang the bearing in the
pot so it does not touch the bottom or sides
of the pot.
e. Turn the heat on and monitor the thermometer. When the oil temperature rises to
approximately 120
℃
(248°F), remove the bearing from the pot and quickly install it. If
necessary, place a socket on the inner bearing race and tap the bearing into place. As the
bearing chills, it will tighten on the shaft, so install it quickly. Make sure the bearing is
installed completely.