Check Accumulator And Track Adjuster Cylinder Circuit; Check Side Frame Area - Hitachi EX 3600-6 Operator's Manual

Check Accumulator and Track Adjuster Cyl-
inder Circuit --- every year
WARNING: Accumulator (1) in the track adjuster
cylinder circuit is charged with high-pressure ni-
trogen. Be sure to release pressure before ser-
vicing the hose between accumulator and track
adjuster cylinder circuit, following the procedure
shown below.
1. Loosen lock nut (4) of valve (2) located under
accumulator (1).
2. Confirm that handle (5) is sufficiently tight-
ened by turning it clockwise. Remove plug (3).
3. Slowly turn handle (5) counterclockwise to
open valve; pressurized oil escapes gradually.
IMPORTANT: Low pressure in the track adjuster cyl-
inder circuit will cause damage to the
track adjuster and travel device. Be sure
to check the accumulator and adjuster
cylinder circuit regularly to maintain
correct circuit pressure. Consult your
authorized dealer when checking accu-
mulator.
Check Side Frame Area --- daily
Soil or rocks stuck in the side frame area will disturb
smooth rotation of the undercarriage components such
as the lower rollers, upper rollers, sprockets or front
idlers.
Remove soil and rocks from the area every day. In addi-
tion, clean the area at least once a week.
Be sure to thoroughly clean the area in cold seasons to
prevent excessive wear of upper rollers due to freezing.
MAINTENANCE
7-130
1
M146-01-025
1
M146-07-081
M117-07-075