With further lowering of the float, the contact of the signaling device closes and a warning lamp for the remaining fuel lights up on the dashboard.
Withdrawal
Attention: Do not make open fire! Fire hazard! When removing the fuel gauge, the fuel tank must not be completely filled. At full refueling, pump out at least 10 liters of fuel with a pump.
Disconnect the ground wire from the battery.
Remove rear seat (see section «Removal and installation of the rear seat»).
Unscrew cover 1-.
Disconnect connector from block -2- and fuel hoses -3- and -4- from fuel tank. Release clamps first.
Turn left with 3 large screwdrivers (drawing W-2020) unscrew the fuel gauge. The direction of rotation is also indicated on the upper side of the fuel gauge -5-.
Raise fuel gauge 6-, swing to one side and pull out. At the same time lay a rag and use it to collect fuel if it flows out.
Examination
Connect an ohmmeter to terminals 6 and 31 of the fuel gauge.
Keep the fuel gauge in working position. The float is at the bottom, and in this position the pointer on the dashboard would show «reserve». The specified value on cars produced before February 1983: 71.7±2.3 Ohms, on cars manufactured from March 1983: 58.8±1.8 Ohms.
Rotate the fuel gauge by 180°. The float is on top, and in this position, the pointer on the dashboard would show «full». Set value: 3.2±0.70m.
Check the contact of the remaining fuel indicator: connect an ohmmeter to terminals W and 31 of the fuel reserve sensor. Setpoint with sensor in working position: 0 0m, with 180°inverted position: infinity.
Installation
Check screen -7- and clean if necessary.
Insert fuel gauge with new gasket -8-. When installing a new sensor, first remove the retaining ring.
Install the fuel gauge so that the fuel hoses can be connected after installation. Secure fuel hoses with new clamps.
Connect electrical connector.
Position and secure the cover, making sure that the gasket -9- is properly seated.
Connect ground wire to battery.
Check the operation of the fuel gauge on the dashboard.
Install rear seat (see section «Removal and installation of the rear seat»).