ell cover cuts away a
certain amount of metal from the diameter of the posts. Before these
posts can be relocked by the Peening Tool in replacing the cell cover
they must be built up in size or diameter again so that there will be
enough lead to insure a tight joint.

To Rebuild Posts

Thoroughly clean the post. Place the proper Post Re-Builder so that it
rests on the shoulder of the post, and run in enough new lead to fill
the Re-Builder. Fig. 251. Be sure and bring the lead surface of the
post into fusion before the new lead is run in, to insure a strong
post.

To build a smooth, solid post, be sure that the post is thoroughly
clean; then use a hot flame.

To Lock or Peen Posts

(1) Assemble positive and negative groups without separators, and
paint the posts (just above the shoulder) with hot sealing compound.

(2) Prepare the cell covers by immersing them in hot water until they
are flexible.

(3) Place a warmed cover over the posts of the two assembled groups
(the elements). Fig. 252.

[Fig. 252 Replacing Prest-O-Lite cover on built-up posts]

(4) Slide the element over the Bed Plate directly under Peening Tool,
with the bottom of the plate connectors resting on the Bed Plate. (See
Fig. 253).

(5) Pull down the Latch to hold the Bed Plate in alignment.

(6) Center the post with Peening Tool. Then force the Peening Tool
down slowly until it has covered about two-thirds of the distance to
the cover. Pause in this operation to allow the metal of the post to
become heated; then force tool the rest of the distance. Raise the
Peening Tool slightly and force down again.

(7) Release the Latch, withdraw and reverse the element, and repeat
operations 4, 5 and 6 on the other post.

(8) The assembled groups are now ready to receive separators.

[Fig. 253 Peening Prest-O-Lite post with special peening press]

Precautions in Post Locking Operations

1--Be sure all covers are warmed until they are flexible before
attempting to assemble.

2--Be sure that the Peening Tool is not too hot. If it is, the post
will melt away and be ruined. A very hot tool sometimes causes
dangerous spattering of hot lead.

3--Be sure that the post is centered with the Peening Tool before
forcing the Tool down on the post.

4--Be sure the cover has been forced down, so that it rests on the
shoulder of the post, before releasing.

General Instructions

In breaking in a new Peening Tool it is advisable to