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Preparation of the Fuel Tank for Product Installation

1) When preparing the holes for installation of LLS fuel level sensors:

  • If the fuel tank is used for diesel fuel, it is recommended to fill the tank with diesel fuel to the full before drilling holes — this will minimize the vapor content inside.
  • If the fuel tank is used for gasoline, it should be steamed.
  • When drilling holes without preliminary steaming (appropriate only for tanks used for diesel fuel without any corrosive impurities), it is recommended to coat bimetal bits or drill with grease oil or lithium grease, which will prevent sparking during drilling.
  • If the tank filler neck can be dismantled, tank steaming is not required. Dismantle the tank filler neck and perform installation works far from the fuel tank.

Figure 6

2) Prepare the fuel tank for fitting works following the manufacturer's specification and other safety regulations appropriate to this type of works.

3) Determine the fuel tank type and prepare it accordingly. Fuel tank types:

a. Plastic or metal tank with the wall thickness under 3 mm

The tanks which shape corresponds with the figure (Figure 2) should be prepared in accordance with Appendix E. Prepare the tank for fixing the product by rivets.

Drill holes in the tank: the central hole - by a bi-metal crown ø35mm and mounting holes - by a drill ø7mm as shown in the figure (Figure 7).

Install the rivets in the prepared holes ø7mm with the help of a riveter. A detail description of rivets installation is given in Appendix C. Figure 7

It is not recommended to use self-tapping screws to fix the product onto a metal or plastic tank with the wall sickness under 3mm. This type of fixation cannot ensure reliability of product attachment to the tank.

b. Metal tank with wall thickness over 3mm

Prepare the tank for product installation on a threaded joint.

The tanks which shape corresponds with the figure (Figure 2) should be prepared in accordance with Appendix E.

Drill holes in the tank: the central hole - by a bi-metal crown ø35mm and mounting holes - by a drill ø4mm as shown in the figure (Figure 8).

Make an М5 thread with the help of an М5 tap. Figure 8

c. Plastic tank with wall thickness over 3 mm

Drill holes in the tank: the central hole - by a bi-metal crown ø35mm and mounting holes - by a drill ø4mm as shown in the figure (Figure 9).

Figure 9