Service Manual

Topdresser 1800 & 2500
Page 4 – 8
Electrical System
Service and Repairs
Solenoid Valve Coil
The solenoid valve coil (S1) on the Topdresser 2500 hy-
draulic control manifold (Fig. 10 and 11) can be replaced
without opening the hydraulic system.
NOTE: If the Topdresser 2500 is equipped with the op-
tional brake kit, a second solenoid valve coil will be in-
cluded on the hydraulic control manifold at port S2.
Removal
1. Position machine on a level surface and chock
wheels to prevent machine movement. If Topdresser is
attached to towing vehicle, engage vehicle parking
brake, stop engine and remove key from the ignition
switch.
2. Make sure that the Topdresser switch is in the OFF
position.
3. Disconnect the wire harness electrical connector
from the solenoid coil.
4. Remove the nut from the hydraulic valve.
5. Slide the coil assembly from the valve.
6. Clean all corrosion or dirt from the spool assembly.
Installation
1. Slide coil assembly onto the hydraulic valve.
2. Install the nut onto the spool assembly and torque
nut 36 in–lb (4.1 N–m) (do not over–tighten).
3. Connect the wire harness electrical connector to the
solenoid coil.
1. Hydraulic manifold 2. Solenoid coil (S1)
Figure 10
1
2
HYDRAULIC MANIFOLD FROM MACHINE
WITH SERIAL NUMBER BELOW 240000000
FRONT
36 in–lb
(4.1 N–m)
3
1. Hydraulic manifold 2. Solenoid coil (S1)
Figure 11
1
2
HYDRAULIC MANIFOLD FROM MACHINE
WITH SERIAL NUMBER ABOVE 240000000
FRONT
36 in–lb
(4.1 N–m)
3