Page 4 - 28Hydraulic System
Sand Pro 2040Z
Flush Hydraulic System
IMPORTANT: Flush the hydraulic system any time
there is a severe component failure or if the system
is contaminated (oil appears milky, black or con-
tains metal particles).
IMPORTANT: If a failure occurs in the traction cir-
cuit, traction circuit component disassembly and
thorough cleaning may be require d to remove con-
taminates f rom the traction circuit. Because the
traction circuit is a closed loop, any contamination
will remain in the circuit and can cause additional
component damage unless it is removed.
NOTE: Left and right transmissions are not connected
to each other on the Sand Pro 2040Z. If a transmission
issue arises with one of the transmissions that requires
flushing, both transmissions do not have to be flushed.
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for at least four (4)
hours.
2. Park machine on a level surface, lower rear attach-
ment, stop engine, apply parking brake and remove key
from ignition switch.
WARNING
Before disconnecting or performing any wo rk on
the hydraulic system, all pressure in t he system
must be relieved. See Relieving Hydraulic Sys -
tem Pressure in the General Information section
of this Chapter.
IMPORTANT: Make sure to thoroughly clean around
all hydraulic connections that will be disassembled.
3. Drain hydraulic reservoirs and transmissions.
4. Drain hydraulic syst em. Drain all hoses and compo-
nents while the system is warm.
5. Change and replace all hydraulic oil filters (control
manifold, LH transmission and RH transmission).
IMPORTANT: Follow a ll local codes and regulations
when recycling or disposing hydraulic fluid and oil
filters.
6. Inspect and clean hydraulic oil reservoirs (see Hy-
draulic Reservoirs in this section).
7. Reconnect all hydraulic hoses and components that
were disconnected to drain hydraulic system.
NOTE: Use only hydraulic fluids specified in Operator’s
Manual. Other fluids may cause system damage.
IMPORTANT: DO NOT overfill the hydraulic reser-
voirs.
8. Fill hydraulic reservoirs with new hydraulic fluid.
9. Disconnect and ground engine spark plug wires to
prevent the engine from starting. Make sure that motion
control handles and lift control switch are in the neutral
position.
10.Turn ignition key switch to START and engage start-
er for ten (10) seconds to prime the hydraulic system.
Wait sixty (60) seconds to allow the starter motor to cool
and then repeat this step again.
11. Connect spark plug wires to spark p lugs.
12.Start engine and let it run at low idle (1550 RPM) for
a minimum of two (2) minutes. Increase engine speed
to high idle (2850 RPM) for a minimum of one (1) minute
under no load.
13.Raise and lower rear attachment several times.
14.Shut off engine and check for hydraulic oil leaks.
Check oil level in hydraulic reservoirs and add correct
amount of oil if necessary.
15.Operate the machine for two (2) hours under normal
operating conditions.
16.Check condition of hydraulic oil. If the new fluid
shows any signs of contamination, repeat steps 1
through 15 again until oil is clean.
17.Assume normal operation and follow recommended
maintenance intervals.
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