Solenoid Valve Removal; Solenoid Valve Disassembly And Cleaning; Solution Filter And Shutoff Valve Removal; Solution Pump Removal - Nilfisk-Advance Adphibian AX 651 Multi EDS Service Manual

Solenoid Valve Removal

1. Drain the solution tank or turn the solution filter ball valve to the off position to prevent solution loss.
2. Lower the deck and disconnect the battery supply to the machine.
3. Remove the front nose cone from the machine by firmly grasping the lower part and lifting straight up.
4. See Figure 5. Unplug the L1/L2 solenoid valve wire assembly connection from the machine harness.
5. Unscrew the inlet hose clamps that secure the hoses to the valve body.
6. Separate (pry) the solution outlet hose off from its valve body barbed fitting.
7. Remove the (2) screws that secure the valve to the mount bracket, then pull the valve body to the front separating it
from the solution inlet hose, completing the part removal.

Solenoid Valve Disassembly and Cleaning

1. Remove the solenoid valve. (See the Solenoid Valve Removal section above.)
2. Remove the four screws and disassemble the valve. (Be careful not to lose any internal parts.)
3. Thoroughly wash any dirt or debris from block and diaphragm.
4. After reassembling, test the solenoid valve for correct operation.

Solution Filter and Shutoff Valve Removal

1. Drain the solution tank using the solution drain hose.
2. See Figure 5. Loosen the (2) hose clamps and pry off the inlet and outlet solution hoses.
3. Remove the nut holding the filter mount bracket to the chassis and remove the assembly from the machine.

Solution Pump Removal

1. Drain the solution tank or turn the solution shutoff valve to the off position to prevent solution loss.
2. See Figure 5. Loosen the (2) hose clamps and pry off inlet hose and outlet hose from solution pump.
3. Remove the fasteners holding the solution pump to the chassis.
4. Disconnect the solution pump electrical connector. Note that a tie strap may need to be cut to complete the part
removal.
Note: Refer to the Appendix at the back of this manual for solution system flow schematics and detergent
system information.
36 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™