SK597-AT4
Hydraulic system
Truck
SPIERINGS MOBILE CRANES USER MANUAL V 1.2
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8.1.4.
Refreshing oil
Refresh the hydraulic oil:
1. Open the
filler cap A
);
2. Place an oil tray under the drainage points;
3. Unscrew the
drainage plugs
C
and let the oil leak from all compartments of the hydraulic tank;
4. Mount the
drainage plugs
C
with new sealing rings;
5. Refill the hydraulic tank with new hydraulic oil (see
and
§ 14.4. Specifications hydraulic system truck
6. Mount
filler cap A
on the hydraulic tank.
8.2.
Hydraulic pumps
Three hydraulic pumps are driven by the truck engine. The steering pump (mounted in the lower left
corner against the engine block) provides the mechanically steered front axles with hydraulic oil.
The other pump is mounted on the flywheel housing and provides the rear axle, the suspension
system and the outrigger system with hydraulic oil.
The last pump provides the cooler with hydraulic oil.
8.3.
Filters
There are three filters present in the hydraulic system, which need to be replaced according to
§ 5.3.6. Maintenance schedule hydraulic system truck
The following sections describe the filters mentioned below:
•
Hydraulic fine filter;
•
Hydraulic coarse filter;
•
Hydraulic fine filter at rear axle steering.
CONDITIONS
•
The truck must be standing horizontally;
•
The oil temperature must be below 40 °C;
•
All axles must be fully retracted;
•
The outriggers and outrigger beams must be fully retracted;
•
The axle blocking may not be enabled.
•
