Greensmaster 3300/3400 Page 6 -- 41 Electrical System
NOTE: Solenoid coil resistance should be measured
withsolenoidatapproximately68
o
F(20
o
C).Resistance
maybe slightlydifferentthanlistedat differenttempera-
tures. Typically, a failed solenoid coil will either be
shorted (very low or no r esistance) or open (infinite re-
sistance).
4. Using a multimeter (ohms setting), measure resis-
tance between the two (2) connector terminals on the
solenoidvalvecoil.Theresistance forthes olenoidcoils
is identified below:
Solenoid Valve Coil
Resistance
PRV (mow) 7.1 ohms
S1, S3 and S4 (lift) 8.8 ohms
S2 (lift) 7.1 ohms
Leak Detector 7.2 ohms
5. If solenoid coil resistance is incorrect, replace sole-
noid (refer to appropriate control manifold service pro-
cedures in the Service and Repairs section of Chapter
5 -- Hydraulic System).
NOTE: To assist in troubleshooting, identical solenoid
valvecoilscanbeexchanged.Iftheproblemfollowsthe
exchanged coil, an electrical problem likely exists with
the coil. If the problem remains unchanged, something
other than the s olenoid coil is the problem source (e.g.
switch,circuitwiring,hydraulicproblem).Themowman-
ifoldPRVcoilisthesameastheliftmanifoldS2coil.The
lift manifold S1, S3 and S4 coils are identical.
6. After coiltestingiscompleted,connect wireharness
electrical connector to the solenoid valve coil.
7. Secure all machine components that were removed
to access hydraulic manifold.
1. Leak detector manifold 2. Solenoid valve
Figure 51
2
1
Electrical
System
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