Dover Wayne Helix WM048523 - Product Tube Replacement - Using the Tube Removal Tool

6.10 Product Tube Replacement - Using the Tube Removal Tool
This procedure requires the tube removal service tool shown previously in Figure 2.8.
Note!
Screws are not used to secure the upper column cover. It snaps into place. Do not use tools to
remove this cover. The proper way to remove the cover is to press with one hand in the middle
at the base and use other hand to unsnap the bottom edge.
1
Trip the emergency shear valve.
2
Run a sale to drain line and relieve pressure.
3
Turn off power to the dispenser and submersible pump at the circuit breakers inside the
building.
4
Place container under the proportional valve to catch fuel.
5
Remove tube retainer pin from valve and pull down on product tube to disconnect it from
valve. See Fig 6.17.
6
If necessary, remove hose from the outlet.
7
Remove the upper column cover as follows:
While pressing in the middle of the panel at the base to expand it around the edges, firmly
pull edge of panel straight out to unsnap it. See Fig 6.18 and Fig 6.19.
Note: Removing Upper Column covers. Screws are not used to secure the upper column
cover. It snaps into place. Avoid using tools to remove this cover. The proper way to remove
the cover is to press with one hand in the middle at the base and use other hand to unsnap
the bottom edge.
8
Remove (6) 10 mm screws securing the lower side column cover and lift cover up and remove.
See Fig 6.20.
9
Attach tube removal tool to the product tube and slide the tool up firmly into the casting to
expand the fingers on the retainer. See Fig 6.23.
10
With the tool still firmly up into the casting, pull down on the tube and remove tube
11
Install new o-rings on the ends of new tube.
12
Install new tube aligning upper end with the outlet and lower end with the valve and, then
firmly push upper end into the retainer in the outlet first and push the lower end up into the
valve.
13
Be sure that the tube is firmly up into the valve and then insert tube retainer pin.
14
Reinstall hose as necessary.
15
Turn on power to dispenser.
16
Reset the shear valve.
17
Run a test sale to clear air from the line and check for leaks..
18
Reinstall lower column cover.
WM048523 Rev 08 01/2019 95
6 Replacement Procedures