Hitachi ZAXIS 130-6N Operator's Manual page 372

Loosen the Track
d
CAUTION:
 The pressure inside the cylinder of the track adjuster
is high. Do not loosen valve (1) quickly or loosen it
too much as valve (1) may fly out or high-pressure
grease in the adjusting cylinder may spout out.
Slowly loosen valve (1) while keeping body parts and
face away from valve (1). Never loosen grease fitting
(2).
 To prevent accidents, care should be taken to ensure
that hands, feet, and any body parts do not become
entangled when working around the tracks.
IMPORTANT: When gravel or mud is packed between
sprockets and track links, remove it before loosening.
1. To loosen the track, slowly turn valve (1)
counterclockwise using long socket 24; grease will
escape from the grease outlet.
2. Between 1 to 1.5 turns of valve (1) is sufficient to loosen
the track. When valve (1) comes in contact with stop
plate (3), do not loosen valve (1) further.
3. If grease does not drain smoothly, slowly rotate the
raised track.
4. When proper track sag is obtained, turn valve (1)
clockwise to the original condition.
Tightening Torque: 90 N·m (9 kgf·m, 66 lbf·ft)
Do not remove valve stop plate (3). Do not loosen bolt (4)
while adjusting the track sag.
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CAUTION: Consult your authorized dealer if grease is
not sufficiently drained.
MAINTENANCE
3
1
2
Grease Outlet
7-106
3
4
MDAA-07-013
MDAA-07-014
MDAA-07-057