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6 - Maintenance
Accumulator Service
If the yaw damping seems to be insufficient, the accumulators needs to
be recharged or replaced. Ask your HARDI dealer to assist you.
1. Check for any leaks.
2. Check pressure setting for the accumulators in the test sockets,
which are located in the hydraulic block below. Hydraulic hoses for
the accumulators are also connected to this block.
3. Fill nitrogen gas (N
) into the accumulators, until you reach a
2
pressure of 18 bar (factory setting). The gas volume in the
accumulator is approx. 0.5 litres.
4. Fill hydraulic oil, until you reach a pressure of 35 bar (factory
setting) in the accumulators.
€
DANGER! Do not fill the accumulators with other gases, such as
air or pure oxygen. Risk of explosion.
Hydraulic Block for Yaw
Item
Hydraulic hoses for accumulators
Test sockets for accumulators
Yaw cylinders on spray boom
Return oil back to tractor
÷
NOTE! For more details, see the hydraulic diagram in the section
"Technical Specifications" in this book.
Alignment of Rubber Pads on Spray Boom
When the boom is folded, it must be checked that it rests correctly on the rubber pads. The rubber pads protect the boom
parts during folding and transport, so please check them for misalignment. The rubber pads also help to steer the boom
into the transport position.
Steps for adjustment:
1. Fold the boom and check the positions of the rubber pads (A).
They must be touching, when folding is completed.
2. If realigning is needed, loosen the four lock nuts (B) slightly.
Wrench = 17 mm.
3. Move steel bracket with the rubber pad sideways to the wanted
position.
4. Tighten the four lock nuts to lock the position of the rubber pad.
5. Adjust other rubber pads on the boom as needed.
142
Port on hydraulic block
ACC1, ACC2, ACC3
MACC1, MACC2, MACC3, TM
C1, C2, C3
T
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