Manitowoc GROVE GMK6400 User Manual

Maintenance work on the superstructure
8.3 Hoists
8 - 12 3 302 756 en Maintenance manual
GMK6400
16.11.2018
8.3.2 General inspection
• Pay attention to any unusual running noises from the hoists.
• Check the hoists and the connections for leaks. In the event of leaking
consumables;
à Checking the oil level, p. 8 - 11.
• Check that pipes and hoses are tightly connected and undamaged.
If any damage is found, report it to Manitowoc Crane Care or an authorised
GROVE dealer or your repair crew.
8.3.3 Checking the hoist brake
Check that the hoist brake is working correctly on the main hoist and the
auxiliary hoist.
Main hoist • Attach the hook block to the hoist rope, reeved once.
• Lift a load of about 12.7 t (28,000 lbs) to about 30 cm (1.0 ft) above the
ground.
• Measure the distance to the ground when the load is hanging completely
still.
• Switch the engine off.
If the load has not lowered after about 2 minutes, the brake is currently in
working order.
If the load lowers, notify Manitowoc Crane Care or an authorised GROVE
dealer.
Auxiliary hoist • Carry out the check on the auxiliary hoist in exactly the same way as with
the main hoist, but use a load of about 10.6 t (23,370 lbs).
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Manitowoc GROVE GMK6400 Specifications

General

Brand	Manitowoc
Model	GROVE GMK6400
Category	Construction Equipment
Language	English