Pressure Accumulator - Checking The Gas Pressure; Taking Oil Samples - Manitowoc Grove GMK 5200-1 Maintenance Manual

8.6.7
G
8.6.8
Prerequisites
Select the
sampling location
Maintenance manual
GMK5200-1
Pressure accumulator – checking the gas pressure
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.

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-
à
Taking oil samples , p. 7 - 106.
sis;
– The engine must be switched off and secured against unauthorised use;
à
p. 2 - 3.
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.
The superstructure is equipped with pressure
accumulators.
The filling pressure at 20 °C (68°F) is:
1 Pressure accumulator 20 bar (290 psi)
2 Pressure accumulator 180 bar (2,610 psi)
•
Have the filling pressure checked and if
necessary corrected by
or an authorised GROVE dealer.
Care
3 302 746 en
Maintenance work on the superstructure
8.6 Hydraulic system
Manitowoc Crane
M 12
M 12
s
8 - 37