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Table of Contents > Descriptions of work > 4.68 Natural gas system: checking wax layer between natural gas fuel tank and fuel tank shut-off valve

VW Passat B7 Service Manual ➜ 4.68 Natural gas system: checking wax layer between natural gas fuel tank and fuel tank shut-off valve

Passat 2011 ➤ , Passat Variant 2011 ➤  
Maintenance - Edition 01.2019  
♦ 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-.  
4. Descriptions of work:  
175  

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