TM 5-3810-307-24-1-2
Table K-5. Impact Hammer Troubleshooting (Continued)
Symptom
Probable Cause
Corrective Action
Cylinder Compression
Both the fuel and oil pumps
1.
Low compression caused by worn
1a. Inspect the piston compression rings and
do not operate properly.
piston compression rings and/or
replace as necessary.
impact block compression rings.
1b. Inspect the impact block compression
rings and replace as necessary.
2.
Low compression caused by worn
2.
Inspect the lower cylinder and repair or
lower cylinder.
replace the lower cylinder as necessary.
NOTE
If damage is not too severe, it may
be possible to re-chrome the
combustion area of the lower
cylinder.
1.
Inspect the piston compression rings and
Exhaust smoke (blow-by) is
1.
Worn piston compression rings.
replace as necessary.
escaping out of the top of the
lower and/or upper cylinder.
2.
Inspect the lower cylinder and repair or
2.
Worn lower cylinder.
Indicated by an area of black
replace the lower cylinder as necessary.
carbon on the piston (as
NOTE
opposed to a shiny, well-
If damage is not too severe, it may
lubricated piston).
be possible to re-chrome the
combustion area of the lower
cylinder.
Exhaust smoke (Blow by) is
1.
Worn impact block compression
1.
Inspect the impact block compression
escaping out of the bottom of
rings.
rings and replace as necessary.
the lower cylinder.
2.
Inspect the lower cylinder and repair or
2.
Worn lower cylinder.
replace the lower cylinder as necessary.
NOTE
If damage is not too severe, it may
be possible to re-chrome the
combustion area of the lower
cylinder.
Air Supply
1.
The fuel plug vent/ valves on the fuel
1.
Ensure the fuel plug vent/ valves on the
Air supply is restricted.
tank are not open.
fuel tank are fully open.
2.
The oil plug/vent valve on the
2.
Ensure the oil plug/vent valve
on
lubricating oil tank is not open.
lubricating oil tank is fully open.
3.
Obstruction in intake/exhaust ports
3.
Remove obstruction from intake/exhaust
on lower cylinder.
ports on lower cylinder.
Spotter
Spotter extends/retracts
1.
Improper connection of the hydraulic
1.
Reconnect hydraulic hose reel lines
erratically.
hose reel lines to the hydraulic hose
properly.
connections (spotter manifold) on the
spotter.
2.
Clogged, broken, or loose hydraulic
2.
Clean, tighten, or replace hydraulic lines
lines or fittings.
or fittings.
3.
Worn short or long wear pads on the
3.
Replace worn wear pads and properly
inner or outer box.
lubricate.
4.
Damaged hydraulic cylinder.
4.
Replace hydraulic cylinder.
5.
Distorted outer or inner box sections.
5.
Replace outer or inner box section(s).
Change-1 K-31
