300SEL (126.025) L6-3.0L (103.981) (1988)
Fuel Gauge Sender: Service and Repair
Removing and Installing Fuel Gauge Sending Unit
Model 126
Disconnect battery ground cable
Remove rear bench seat, backrest
Unclip cap
Detach connector on sending unit (B4), protect against slipping off.
Remove sending unit (B4). Empty by running if necessary. Tighten to 39 Nm.
Renew sending unit seal. Remove adhesive strip and locking pin (new part only).