Manitowoc Grove GMK 5250L Maintenance Manual

Maintenance work on the superstructure
8.6 Hydraulic system
09.03.2018
Maintenance manual 3 302 744 en 8 - 37
GMK5250L
8.6.7 Pressure accumulator – checking the gas pressure
The superstructure is equipped with pressure
accumulators.
The filling pressure at 20 °C (68°F) is:
• Have the filling pressure checked and if
necessary corrected by
Manitowoc Crane
Care
or an authorised GROVE dealer.
8.6.8 Taking oil samples
The oil sample from the superstructure hydraulic system is taken in a way
similar to that for the carrier hydraulic system.
Information for taking samples with the hose and for the laboratory analy-
sis;
à Taking oil samples, p. 7 - 106.
Prerequisites – The engine must be switched off and secured against unauthorised use;
à p. 2 - 3.
Select the
sampling location
To determine the usability of the oil, you must take a sample from the
hydraulic system. To do that you must connect the hose with the connecting
piece to a gauge port.
s
M 12
G
Risk of accidents due to incorrect inspection.
The gas pressure test must be carried out only by an authorised official
inspector of pressure tanks or under his/her supervision or instructions.
1 Pressure accumulator 20 bar (290 psi)
2 Pressure accumulator 180 bar (2,610 psi)
M 12

Manitowoc Grove GMK 5250L Specifications

General

Brand	Manitowoc
Model	Grove GMK 5250L
Category	Construction Equipment
Language	English