Hydraulic Solenoid Valve Coil
A hydraulic solenoid valve coil on the deck control man-
ifold (Fig. 58) or lift control manifold (Fig. 59) can be re-
placed without opening the hydraulic system.
FRONT
2
Removal
1.
Park machine on a level surface, lower cutting
decks, stop engine and engage parking brake. Remove
key from ignition switch.
2.
Locate the solenoid valve coil that is to be replaced.
A. Tilt operator seat up to gain access to hydraulic
deckcontrolmanifold.RefertoFigure58forsolenoid
coil locations on the deck control manifold.
1
3
B. The lift control manifold is attached to a frame
bracket under the operator floor plate. Access to the
lift control manifold can be obtained by removing the
floor plate. Refer to Figure 59 for solenoid coil loca-
tions on the lift control manifold.
48
(5.4
to 60 in--lb
to 6.7 N--m)
4
Figure 58
1.
2.
Deck control manifold
Solenoid coil PRV2
3.
4.
Solenoid coil PRV1
Nut
3.
Disconnect the wire harness electrical connector
from the solenoid valve coil to be replaced.
4.
5.
6.
Remove the nut from the hydraulic valve.
Slide the solenoid coil from the valve.
Clean any corrosion or dirt from the valve.
48 to 60 in--lb
(5.4 to 6.7 N--m)
5
3
4
Installation
1.
2.
Slide new coil assembly onto the hydraulic valve.
Install the nut onto the valve and torque nut from 48
2
6
to 60 in--lb (5.4 to 6.7 N--m) (do not over--tighten).
3.
Connect the machine wire harness connector to the
solenoid coil.
4.
accessed. Install operator floor plate if lift control man-
ifold was accessed.
Lower and secure seat if deck control manifold was
FRONT
1
Figure 59
1.
2.
3.
Lift control manifold
Solenoid coil PRV
Nut
4.
5.
6.
Solenoid coil S2
Nut
Solenoid coil S1
Electrical System
Page 5 -- 48
Groundsmaster 4300--D
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