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Operating Manual Crawler Excavator TC37
Working operation 6
Changing procedure without quick-attach system
(clamshell grab attached directly)
• Connect the grab to the dipperstick using the
suspension pin and secure.
• Connect the swivel motor to the couplings (34/1
additional control circuit) and the "Open/Close"
function to the couplings (34/2 bucket cylinder).
Machine damage
due to the bucket cylinder piston rod not
having fully retracted.
• Ensure that the bucket cylinder piston rod
is fully retracted and close the ball valve
(34/3).
Attention
• After the clamshell grab has been
removed, re-open the ball valve (34/3).
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