Hitachi ZX200-5G Workshop Manual page 392

Assembly of Travel Device
IMPORTANT: Before assembling, apply hydraulic oil
onto parts in order to prevent them from seizing.
d
CAUTION: Metal fragments may fly off when
a hammer is used. Wear necessary protection,
such as goggles, helmets, etc in order to prevent
personal injury.
d
CAUTION: Be careful as roller bearing (03) is too
hot.
IMPORTANT: When roller bearing (03) has been
removed, follow the procedure as steps 1, 3, 5, and
12.
1. Warm up the inner race of roller bearing (03) of the
travel motor (00) side to 50 to 70 °C (122 to 158
°F) by using a heater. Install the inner race of roller
bearing (03) of the travel motor (00) side to travel
motor (00). After roller bearing (03) of the travel
motor (00) side cools, install roller bearing (03) of
the travel motor (00) side to travel motor (00).
f
NOTE: Check that the inner race of roller bearing (03)
on the travel motor side is installed completely.
SECTION 4 UNDERCARRIAGE
Group 2 Travel Device
03
00
WDCD-04-02-002
IMPORTANT: Handle floating seal (02) with care.
(Refer to W4-2-5.)
2. Apply grease onto O-ring of one side of floating seal
(02). Install one side of floating seal (02) to travel
motor (00). Apply gear oil onto the whole sliding
surface on floating seal (02).
f
NOTE: If it is difficult to install O-ring of floating seal
(02), push O-ring to the periphery direction by using a
bamboo spatula.
d
CAUTION: Metal fragments may fly off when
a hammer is used. Wear necessary protection,
such as goggles, helmets, etc in order to prevent
personal injury.
IMPORTANT: Do not tap except for the outer race of
roller bearing (03).
3. Install the outer race of roller bearing (03) of the
cover (41) side to drum (04) by using a bar and a
hammer.
f
NOTE: Check that the outer race of roller bearing (03)
on the cover (41) side is installed completely.
W4-2-2-6
03
04
WDCD-04-02-002