TM 9-243
USING A MACHINIST'S BALL PEEN HAMMER
The following procedure is one of many uses of the
machinist's hammer.
1 To remove a spring pin from a shaft, select a drift
punch about the same diameter as the pin and a
machinist's hammer having a face larger than the
punch head.
2 Hold punch (1) in your left hand centered over pin (2),
tap punch lightly with hammer (3). This should move
the pin.
NOTE
It
may
be
necessary
to
apply
penetrating oil to the pin before it
will move.
3 Catch the pin in your right hand before it falls out of
the shaft.
NOTE
After the pin is about half way out of
the shaft, you should not hold the
punch.
CARE OF HAMMERS
1.
Check for cracks in handle (1). Replace handle
if cracked. Check for loose head (2). Replace
missing or makeshift wedges to be sure head is
tight. If not tight, replace handle.
2.
Periodically rub a small amount of linseed oil
into the wood handles (1) to prevent the wood
from drying out and shrinking.
3.
Replace hammer if it has a worn or chipped
face (3) or claw (4).
4.
Lightly lubricate metal parts when storing the
hammer for a lengthy period.
5.
Wipe oil and grease from rubber mallets to
prevent damage to rubber.
21-12
