6
Repairs
SPRINGS
Although spring failure will rarely occur if the unit
is operated within its limitations, springs may
eventually fail. Such failure will cause the unit to
gradually become weak or inoperative. Faulty
springs will be indicated by irregular white areas
adjacent to the spring clamps, or as excessively
worn areas under the edges of the clamps. Refer
to the Parts List and order a new set of springs from
the factory. Be sure to include the serial number
of the unit when ordering.
Note: Springs should be replaced in sets to insure
proper overall springing characteristics.
To install a new set of springs, proceed as follows:
a. Remove the armature, part 3, and the E-Frame.
b. Remove the old spring, noting the relative
positions of the hammer, spring clamps,
spacers, and shims in, the assembly.
c. Reassemble the new springs, hammer, spring
clamps, and spacers on the base, referring to
Figure 4 for relative positions of the parts.
d. Align the parts as shown in Figure 4 and tighten
the outside center spring clamp bolt.
e. Reverse the assembly (turn 180° on base) and
tighten the other center spring clamp bolts.
f. Replace the E-Frame and follow the instructions
given for E-Frame and anvil gap adjustment.
COIL AND E-FRAME (E-FRAME
ASSEMBLY)
Since the coils are permanently embedded on the
center legs of the E-Frame, a coil and E-Frame
must be replaced as a unit. In removing an old coil
and E-Frame, disconnect the old coil by cutting
the leads on the coil side of the crimp connectors,
leaving stubs long enough to properly connect
the new coil.
Then remove the four bolts securing the E-Frame
and slide the E-Frame out sideways (see Figure
5). Before fastening the new E-Frame in place,
the gaps should be adjusted in accordance with
instructions previously given.
When ordering a new E-Frame assembly be sure
to include the vibrator nameplate voltage.
FIGURE 4
E-FRAME/COIL
ASSEMBLY
FIGURE 5
ARMATURE
Remove the E-Frame and armature, install the new
armature and tighten, install E-Frame, and follow
E-Frame gap adjustment procedure.
IMPACT PAD AND ANVIL
If it becomes necessary to replace the impact pad,
part 9, or the anvil, part 10, due to possible wear
or breakage it is best to replace both parts. In
replacing these parts, the spring change procedure
given above should be followed, except that it
will not be necessary to unfasten the spring and
hammer at the center.
.015 AIR GAP
ADJUSTMENT
