Natural Gas System: Checking Wax Layer Between Natural Gas Fuel Tank And Fuel Tank Shut-Off Valve - Volkswagen Passat 2011 Maintenance Manual

♦ Tank shut-off valve for natural gas tank 3 with respective high-
pressure line coupling point with all connections, threaded
connections and bleed valves -arrows-
♦ Check electromechanical high-pressure regulator for gas
mode with all connections and threaded connections
-arrows-. Also check whether rubber stopper of pressure relief
valve -1- is fitted as well as condition of low-pressure hose
-2-.
♦ Gas rail with gas injection valve -1- and gas rail sensor -2-
(installed) and without removal of the exhaust gas turbocharg‐
er pressure pipe (see illustration: view when removed)
– Install underbody cover. ⇒ General body repairs, exterior;
Rep. gr. 66 ; Natural gas tank covers
4.68 Natural gas system: checking wax layer
between natural gas fuel tank and fuel
tank shut-off valve
Note
Applies only to German market.
Special tools and workshop equipment required
♦ Wax ⇒ ETKA
– Make sure gap between natural gas fuel tank and -1- and fuel
tank shut-off valve -2- is sufficiently waxed.
– If necessary, spray wax over entire circumference -arrows-.
Passat 2011 ➤ , Passat Variant 2011 ➤
Maintenance - Edition 01.2019
4. Descriptions of work:
175