D20x22 Series II Navigator HDD
Operation 50-23
Drill Rod - Lubricate
Refer to
Specifications
section “Lubricants” in the
Maintenance Manual
for specifications.
Lubricate male rod threads and shoulders. Apply lubricant to clean, dry threads.
NOTICE:
Keep electrically insulated gloves from coming in contact with lubricant. Petroleum-based products
will chemically damage gloves.
NOTICE:
Do not thin lubricants to make them easier to apply. Thinning reduces the amount of available metal
filler and makes lubricant ineffective.
D
RILL
M
ODE
- S
ELECT
Refer to “Drilling Modes Overview,”
Starting the Bore - First Rod
Step 1:
With the bill at 6:00, thrust until the drill rod just enters the ground.
Step 2:
Stop pushing and rotate drill head until the rod is centered in the rod guide rollers.
Step 3:
When centered, rotate and push remainder of drill rod into the ground.
NOTICE:
If the drill rack moves during drilling, reposition rack so drill rod is centered in the rod guide rollers
before continuing.
To prevent the rod joint from pulling apart, never rotate drill rod counterclockwise while drilling, pulling back,
or backreaming.
Step 4:
Stop rotation and engage front vise to clamp rod.
Step 5:
Rotate drive spindle in reverse to unthread from drill rod. The drive chuck will move backward as rod
unthreads. Lubricate drive chuck threads.
Step 6:
Move drive chuck fully back.
