Check And Clean Injector; Check Gas Damper; Tightening And Retightening Torque Of Nuts And Bolts - Hitachi ZAXIS 120-6 class Operator's Manual

Check and Clean Injector

--- as required
See your authorized dealer.

Check Gas Damper

--- as required
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CAUTION: The gas damper has been charged with
high-pressure nitrogen gas. Inappropriate handling
may cause explosion, possibly resulting in serious
injury or death.
Gas dampers are used in the overhead window of the cab.
Contact your authorized dealer immediately in any of the
following situations.
 The cover or window can not be opened with normal
operating force.
 The cover or window can not maintain its open position.
 Oil or gas leak is found.
Tightening and Retightening Torque of Nuts and
Bolts
--- every 250 hours (first time after 50 hours)
Tighten or retighten nuts and bolts used on this machine in
accordance with the torque values shown in the following
table. Check daily for missing or loose nuts and bolts before
and after operation. If any loose or missing nuts and/or bolts
are found, retighten or supply replacement parts. Check
tightness after the first 50 hours then every 250 hours. The
nuts and bolts other than those shown in the table below shall
be tightened in accordance with the torque values shown in
the table on page 7-137.
MAINTENANCE
7-130