Hitachi ZX27U-2 Operator's Manual page 177

Installing Rubber Crawler
1. Lower the bucket and blade to raise both tracks off
ground. Place blocks under machine frame to support
the machine.
2. Slowly turn valve (1) counterclockwise to allow
grease to escape from the grease outlet.
3. Engage the rubber track with the sprocket and posi-
tion the other end of the rubber track on the front idler.
4. While rotating the sprocket in reverse, apply hori-
zontal force to the rubber track to seat it on the idler.
5. Insert a steel pipe into gaps among lower rollers,
track frame and rubber track and rotate the rubber
track slowly to correctly seat the rubber track on the
idler.
6. Confirm that the rubber track is correctly engaged
with the sprocket and idler.
7. Adjust track sag. (See page 7-54.)
8. After checking that the rubber track is correctly en-
gaged with the sprocket and idler and the track sag is
correctly adjusted, lower the machine to the ground.
MAINTENANCE
2
Direction of Rotation
7-57
1
Direction of Rotation
Steel Pipes
Steel Pipe
Grease Outlet
M1LA-07-036
M503-07-062
M503-07-063