Manitowoc GROVE GMK4090 Maintenance Manual

Maintenance work on the superstructure
8.3 Hoists
8 - 10 3 302 649 en Maintenance manual
GMK4090
07.12.2017
8.3.2 General inspection
• Pay attention to any unusual noises from the hoists while running.
• Check the hoists and the connections for leaks. In the event of leaking con-
sumables;
à Checking the oil level, p. 8 - 9.
• 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.
• Attach the hook block to the hoist rope, reeved once.
• Lift a load of about 5.1 t (11,250 lbs) to about 30 cm (1.0 ft) above the
ground.
• Measure the distance to the ground when the load is hanging com-
pletely still.
• Switch the engine off.
If the load has not lowered after approx. 2 minutes, the brake is currently in
working order.
If the load lowers, notify Manitowoc Crane Care or an authorised GROVE
dealer.
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Manitowoc GROVE GMK4090 Specifications

General

Brand	Manitowoc
Model	GROVE GMK4090
Category	Construction Equipment
Language	English