Manitowoc GROVE GMK7450 - Pressure Accumulator - Checking the Gas Pressure; Taking Oil Samples

Maintenance work on the superstructure
8.10 Hydraulic system
8 - 76 3 302 577 en Maintenance manual
GMK7450
16.08.2018
8.10.7 Pressure accumulator – checking the gas pressure
A pressure accumulator is built into the super-
structure.
The filling pressure at 20 °C (68 °F) is:
• Have the filling pressure checked and if nec-
essary corrected by
Manitowoc Crane Care or
an authorised GROVE dealer.
8.10.8 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 on taking samples with the hose and on the laboratory analysis;
à Taking oil samples, P. 7 - 92.
Prerequisites – The engine must not be running and must be secured against unauthor-
ised use;
à P. 2 - 3.
Select the sam-
pling location
To determine the usability of the oil, you must take a sample from the
hydraulic system. To do tha
t you must connect the hose with the connecting
piece to a gauge port.
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 t
anks or under his/her supervision or instructions.
1Pressure
accumula
tor
180 ba
r (2610 psi)
M 12