Sealing Element Assembly in Jar
Turn the element upside down and place over a block of wood so that the weight is supported by the cover. (See Fig. 332.)
Heat the sealing compound by means of a flame (a blow torch will answer the purpose), and place the jar over the element, as shown in Fig. 331. The jar should be firmly pressed down into the compound. With a hot putty knife, clean off any compound which has oozed out of the joint. The assembled cell can now be turned to an upright position.
In case it is necessary to remove a cover, heat a wide putty knife and run it around the edge between the cover and the glass jar. This will soften the compound so that the cover can be pried off.
If it is necessary to remove the cover from the posts, the keys must be driven out by pounding on the small end, as the keys are tapered-and the holes in the lead collars are unequal in size.