Q: How do you remove and install a fuel tank in a Chevrolet Astro?
A: Relieve the system fuel pressure. Detach the cable from the negative terminal of the battery. Raise the vehicle and support it securely on jackstands. Support the fuel tank with a transmission jack, a floor jack or a pair of jackstands. Unclip the lower shield from the right side of the tank and pull it down far enough to remove the fuel feed, return and vapor hoses. Loosen the filler neck hose clamp and detach the filler neck hose from the pipe on the tank. Remove the fuel tank support strap bolts and remove the support straps. Carefully lower the tank enough to disconnect the fuel pump lead, sending unit lead and ground wire. Remove the fuel tank from the vehicle. Installation is the reverse of removal.
Q: What precautions should be taken when repairing the fuel tank or filler neck?
A: Therefore, when these prime components of your car experience some problems for example fuel tank or filler neck damage, they need to address them by someone knowledgeable in this work which is very critical and potentially risky. Although the fuel tank has been washed and drained, it still contains explosive fumes that can explode during the repair process. If the fuel tank is not positioned within the vicinity of sparks or open flames, it should be moved away from any place where such gas leaks could be ignited. However, extra care must be taken inside garages as there might be a gas appliance that gets ignited causing an explosion. Thus any repairs made to the fuel tank or filling neck should only be carried out by a professional who has experience in this line of work. Despite cleaning and draining of the fuel tank there may still be explosive gases that may ignite during repairs. The fuel tank should never be placed in an area where sparks or open flames might cause ignition of fumes coming out of the tank if it's taken out of a vehicle. Nevertheless, more caution must be exercised within garage with gas type appliance causing explosion as it cannot ignite.