Komatsu PC210-8 Shop Manual page 1037

50 Disassembly and assembly
2. Hub assembly
1) Assemble hub assembly in the following
procedure.
1] Use push tool to press fit ball bear-
ings (29) and (28) into hub (30).
2] Set floating seal (27) to the tool J5.
a Install floating seal with the O-
ring and O-ring contact surface
de-greased and dried completely.
3] Install floating seal (27) to hub (30).
a After the floating seal installation,
check that the inclination of the
seal is 1 mm or less.
a After floating seal installation,
check the sliding surfaces for any
foreign material and then apply a
thin coat of power train oil (TO30)
on it.
PC210, 230, 240-8
2) Use an eyebolt [2] to set hub assembly
(26) to travel motor.
a When hub assembly is difficult to
install, install it by lightly tapping the
bearing inner race with push tool.
3. Locked
1) Use tool J6 to press the inner race of the
ball bearing.
Specified pressing force:
q
2) Rotate hub assembly (26) 2 – 3 times with
the bearing pressed.
3) With this condition, measure size (a) from
the top surface of travel motor to the top
surface of the bearing inner race.
a When measurement is complete,
remove tool J6.
4) Measure the thickness (b) of the lock (25)
as a unit.
5) Calculate the screwing depth (c) using the
measurements (a) and (b).
c = a – b – (0 – 0.1)
q
UEN00661-00
8.8 – 12.7 kN {0.9 – 1.3 ton}
15