TM 5-3810-307-24-1-2
Repair Instructions
To perform repair instructions on the impact hammer the impact hammer must be first removed from
the lead tower. Lower the impact hammer onto blocks (of sufficient height to remove the various sub-
assemblies). Ensure the piston is in the bottom position resting on the impact block. This can be
verified by viewing the position of piston through the piston transportation pin hole. Unless removing
the piston, install the piston transportation pin and clip.
After repair procedures are completed, the impact hammer can be raised to a vertical position.
CAUTION
When raising the impact hammer to a vertical position after performing
repair procedures, it is imperative to raise the impact hammer very slowly.
The piston and impact block must not be allowed to collide forcefully with
the striker plate. A violent collision may cause damage.
Blow Count Recorder. (Refer to Figures K-12 and K-13.)
The blow count recorder is normally removed to replace the battery pack, entire blow count recorder as
an assembly, or to remove the lower gib.
Removal.
a.
Remove the two blow count recorder mounting bolts (1, Figure K-12) securing the blow
count recorder (2) to the direct drive assembly.
b.
Remove the blow count recorder (2) from the direct drive assembly.
1
2
DIRECT DRIVE
ASSEMBLY (REF.)
LEGEND
1.
Blow Count Recorder Mounting Bolts,
2.
Blow Count Recorder
1/2 x 1-3/4 NC SHCS
Figure K-12. Blow Count Recorder Installation