Control Valve; To Replace Solenoid Control Valve - Tennant ATLV 4300 Service Manual

HYDRAULICS

CONTROL VALVE

The solenoid control valve is located on the lower
frame behind the engine, just below the bottom of
the hopper. The solenoid control valve receive
hydraulic flow from the accessory pump and
distributes this flow to the steering and vacuum
fan circuit. The vacuum fan function is controlled
by a dash mounted switch.

TO REPLACE SOLENOID CONTROL VALVE

FOR SAFETY: Before Leaving Or
Servicing Machine; Stop On Level
Surface, Set Parking Brake, turn off
machine, and remove key.
1. Open the hopper cover and tilt the hopper
back.
2. Remove the five pan screws holding the rear
engine cover to the machine. Remove the
cover.
3. Locate the solenoid control valve behind the
engine, just below the rear frame member.
4. Disconnect the main harness from the
electrical solenoid on the back side of the
valve.
5. Mark, disconnect, and plug the hydraulic
hoses leading to the control valve.
NOTE: Observe hydraulic cleanliness
requirements when opening hydraulic lines.
6. Remove the two M6 hex screws and nyloc
nuts holding the control valve to the mount
bracket. Remove the control valve from the
machine.
7. Remove the hydraulic fittings from the old
control valve and install into the new valve in
the same orientation.
8. Position the new valve assembly on the
mount bracket. Reinstall the hardware and
tighten to 8 -- 10 Nm (6 -- 8 ft. lb).
5-22 ATLV 4300 330495 (10- -98)