OPERATING INSTRUCTIONS
39 AU103170 H5B
DRY BORING
NOTE:
Refer to the diagram on the following page to
identify the dry boring component parts.
1. Attach a 1 inch male adapter (3) and a male quick
lock adapter (5) or a male quick lock adapter (4) to
the Hydra-Borer universal joint (if using standard 1
inch drill pipe only item 3 is required).
2. Attach a maximum of three drill stems (8) outside the
hole being bored. When one stem length is under
ground, another can be added before boring
operations continue. Minimize the number of drill
stems outside the hole. Excess length tends to bow or
whip unless restrained by the guide anchors.
IMPORTANT:
Be sure to use the correct retainer (6 and
7). Make sure that the retainer DOES NOT protrude
through the drill stem. (See following page)
NOTE:
If standard 1 inch pipe is used, it may be left in
the hole to act as a conduit for wire, etc.
3. Begin operations by boring a pilot hole. Use a fishtail
bit (10) for tightly compacted soil or a compaction bit
(11) for soils which are loose or granular. Attach the
drill bit to the drill stem using a female quick lock
adapter (9). If using standard drill pipe the drill bit
will thread directly into the drill pipe.
4. Push the hydraulic selector control knob down, see
Hydraulic Selector Control in this manual.
5. Engage the Hydra-Borer control lever (either forward
or reverse, see Hydra-Borer Control in this manual) to
turn the drill stem.
6. Use the creep control lever to control ground speed
with the transmission in first gear. The ground speed
should be sufficient to allow the bit to work freely
while boring. DO NOT FORCE BORE THE HOLE.
7. After the target hole is reached you may change the
bit and use another accessory to backream and
enlarge the hole (i.e. item 12). If you do, STOP THE
MACHINE and TURN OFF THE ENGINE. Make sure
that the drill stem is not turning before you attempt to
change or remove the bit.
NOTE:
Guards have been removed for clarity. Never
operate Hydra Borer with guards removed.
252L93
1. HYDRA-BORER UNIT 7. RETAINER
2. UNIVERSAL JOIN 8. DRILL STEM
3. MALE ADAPTER 9. FEMALE QUICK LOCK ADAPTER
4. MALE QUICK LOCK ADAPTER 10. FISH TAIL DRILL BIT
5. MALE QUICK LOCK ADAPTER 11. COMPACTION BIT
6. RETAINER 12. COMPACTION REAMER
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