Tennant 5400, Service Manual

Page: 93 / 163

ELECTRICAL
4-23
5400 330735 (3–01)
4. Remove the two hex screws holding the
solenoid mount plate to the solution tank.
Pull the solenoid up for access to the wire
connections.
5. Mark and disconnect the wires leading to the
solenoid. Note the direction of the diode
connected to the coil terminals. Make
sure the line side is connected to wire 16
and 30BLU. Failure to do so will result in
a short circuit.
6. Remove the two hex nuts holding the
solenoid to the mount plate. Remove the
solenoid from the plate.
7. Install the new solenoid onto the plate using
the two hex nuts. Tighten to 7 – 9 Nm
(5 – 6 ft lb).
8. Reconnect the wires leading to the new
solenoid. See electrical schematic in this
section.
9. Position the solenoid mount bracket down
onto the solution tank. Reinstall the two hex
screws and tighten to 18 – 20 Nm
(15 – 18 ft lb).
10. Reinstall the hour meter mount plate and
two pan screws. Tighten to 7 – 9 Nm
(5 – 6 ft lb).