Reelmaster 5010 SeriesHydraulic System (Rev. C) Page 4 -- 6
Relieving Hydraulic System Pressure
Beforedisconnectingor performinganywork on thehy-
draulic system, all pressure in the hydraulic system
mustberelieved.Parkmachineonalevelsurface,lower
cutting units fully, stop engine and engage parking
brake.
To relieve hydraulic pressure in traction circuit, move
tractionpedaltobothforwardandreversedirections.To
relieve hydraulic pressure in steering circuit, rotate
steering wheel in both directions.
To relieve hydraulic pressure in lift circuit, start engine
and fully lower the cutting units. Turn key switch to OFF
and remove key from the ignition switch.
System pressure in cutting circuit is relieved when the
cutting units are disengaged.
Traction Circuit Component Failure
The traction circuit on Reelmaster 5010 series ma-
chines is a c losed loop system that includes the piston
(traction) pump and two (2) wheel motors (4 wheel mo-
tors on machines equipped with optional CrossTrax
TM
AWD kit). If a component in the traction circuit should
fail,debrisandcontaminationfromthefailedcomponent
will circulate throughout the traction c ircuit. This con-
tamination can damage other components in the circuit
so it must be removed to prevent additional component
failure.
If a component failure occurs in the traction circuit, it is
recommended that the entire traction circuit be disas-
sembled,drainedandthoroughlycleanedtoensurethat
all contamination is removed from the circuit. If any de-
brisremainsinthetractioncircuitandthemachineisop-
erated, the debris can cause additional component
failure.
An alternative method of removing traction circuit con-
tamination would be to temporarily install a high pres-
surehydraulicoilfilter(seeSpecialTools)intothecircuit.
Thefiltershouldbeusedwhenconnectinghydraulictest
gaugesinordertotesttractioncircuitcomponentsoraf-
ter replacing a failed traction circuit component (e.g.
traction(piston) pumpor wheelmotor). Thefilterwillen-
sure that contaminates are removed from the closed
loopand thus,do notcause additionalcomponent dam-
age.
Oncethefilterhasbeenplacedinthecircuit,operatethe
tractioncircuittoallowoilflowthroughthecircuit.Thefil-
ter will remove contamination from the traction circuit
during circuit operation. The filter can be removed from
the machine after contamination has been removed
from the traction circuit.
IMPORTANT: When operating the traction system with
the high pressure filter installed, make sure that flow is
always directed through the filter before entering a re-
placed component (e.g. do not press the traction pedal
in the reverse direction if the filter is placed for forward
direction flow). If flow is reversed, debris from the filter
will re--enter the traction circuit.
NOTE: The traction pump case drain could allow trac-
tioncircuitcontaminationtocontaminateotherhydraulic
circuits on the machine.
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