♦
Never break off too large pieces. Adjust the
breaking distance (A) so that the inserted tool does
not fasten.
Breaking
♦
Never use the machine as a lever, the material
should be broken by impact energy.
♦
If the tool fastens, never try to lift it by pulling on
the top of the fuel tank.
♦
Check that the handle bar can move freely (up
and down) without binding.
♦
Let the machine do the work. Never press too
hard. The vibration absorbing handle should never
be forced all the way to the bottom.
♦
The feed force should be adjusted so that the
handle is pressed 'half way down'. This position
provides the best vibration damping and the best
breaking force.
♦
Avoid working in extremely hard material such as
granite and reinforcing iron, since such materials
can cause strong vibrations.
♦
Avoid idling; operation without a inserted tool and
operation with the machine lifted.
♦
Release the throttle lever when the machine is
lifted.
Breaking at high altitude
To get the best result when breaking at high altitude,
do the following:
♦
Check that the air filter is in good condition.
♦
If necessary, lean the fuel mix by turning the main
nozzle (A) clockwise.
♦
When finished with operating at high altitude, turn
back the main nozzle (A) to the default position.
Tie tamping
Cobra TT and Cobra TT-AWD are designed for tie
tamping.
Tie tamping is used for local maintenance of railway
tracks in an area up to 30 square meters. Tie tamping
stabilizes the ballast under the sleepers.
To get the best result when tie tamping, do the
following:
♦
Two operators must operate on each side of the
sleeper. Operating on opposite sides will compress
the ballast down and up, and fill all gaps and
create stability.
♦
Lean the machine when operating. Do not operate
in a straight angle, it will compress the ballast too
deeply and reduce the stability.
♦
Operate for 2-3 seconds at one point before
moving to another operating point. Operating too
long time at one point will press the ballast too
deeply.
♦
Release the throttle lever when the machine is
lifted.
When taking a break
♦
Stop the machine during breaks.
♦
During all breaks you must put the machine away
so that there is no risk for unintentional start.
Maintenance
Regular maintenance is a basic requirement for the
continued safe and efficient use of the machine.
Follow the maintenance instructions carefully.
17© 2010 Atlas Copco Construction Tools AB | No. 9800 0995 93 | 2010-01-12
Original instructions
Safety and operating instructionsCOBRA PRO, TT, TT-AWD
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