Reelmaster 5010 SeriesPage 5 -- 40Electrical System
Hydraulic Solenoid Valve Coil
The Reelmaster hydraulic systemuses several hydrau-
lic solenoid valve coils for system control. The cutting
deck manifold includes two (2) solenoidv alves (Fig. 52)
and the lift control manifold includes four (4) solenoid
valves (Fig. 51).When the solenoid coilsare energized,
hydraulic valve shift occurs to control hydraulic flow.
Testing of the coils canbe done with the coil installedon
the hydraulic valve.
Testing
1. Before disconnecting solenoid v alve coils, test the
solenoids and their circuit wiring as ECM outputs with
the Diagnostic Display (see Diagnostic Display in the
Troubleshooting section ofthis chapter). If the Diagnos-
tic Display verifies that solenoid coils and circuit wiring
arefunctioning correctly,no furthertestingis necessary.
2. If the Diagnostic Display determines that coils and
circuitwiringarenot functioningcorrectly,parkmachine
on level surface, lower cutting units, stop engine, apply
parking brake and remove key from ignition switch.
3. To gain access to cutting unit control manifold (Fig.
51), raise and prop the operator seat. Access to the lift
control manifold (Fig. 52) can be obtained by removing
the operator floor plate.
4. Disconnect harness electrical connector from hy-
draulic solenoid valve coil that is to be tested (Fig. 51 or
52).
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the meter test leads together.
Themeter maydisplay asmallresistance value(usually
0.5 ohms or less). This resistance is due to the internal
resistance of the meterand test leads. Subtract thisval-
ue from from the measured value of the component you
are testing.
5. Using a multimeter (ohms setting), measure resis-
tance between the two connector terminals on the sole-
noid valve coil. The resistance for the solenoid coils is
identified below:
Solenoid Valve Coil
Resistance
MSV1 and MSV2 8.7 ohms
SV1 and SV3 8.7 ohms
SV2 and SVRV 7.1 ohms
6. If solenoid coil resistance is incorrect, replace s ole-
noid (see Hydraulic Solenoid Valve Coil Removal and
Installation in the Service and Repairs section of this
chapter).
NOTE: Thetwosolenoid valvecoils onthe mowcontrol
manifold (MSV1 and MSV2) are identical. Solenoid
valvecoils SV2andSVRVonthe liftcontrolmanifoldare
identical and are the same as those used on the mow
manifold. The remaining two lift manifold coils(SV1 and
SV3)are identical.Toassist introubleshooting,identical
coils can be exchanged. If the problem follows the ex-
changed coil, an electrical problem likely exists. If the
problem remains unchanged, something other than the
solenoid coil is the problem source (e.g. switch, circuit
wiring, hydraulic problem).
7. Connectharnesselectricalconnectortothesolenoid
valve coil.
8. Lowerand secureseat ifcuttingunit controlmanifold
was accessed. Install operator floor plate if lift control
manifold was accessed.
1. Cutting unit manifold
2. MSV2 solenoid
3. MSV1 solenoid
Figure 51
1
3
2
FRONT
1. Lift manifold
2. SV3 solenoid
3. SV2 solenoid
4. SVRV solenoid
5. SV1 solenoid
Figure 52
4
1
3
5
2
FRONT
