D20x22 Series II Navigator HDD
Overview 30-19
D
RILL
T
OOL
C
ONNECTIONS
Drill tools that must be removed to attach a backreamer to the drill string must have a manually threaded joint
with collar. Such tools are not torqued and do not require breakout tools to uncouple the joint.
Threaded Connections - Hex and Quickfire
Connect
Step 1:
Clean all connecting surfaces.
Step 2:
Apply small amount of grease to threads
(1)
.
Step 3:
Slide hex coupler
(2)
completely onto starter
rod
(3)
.
Step 4:
Turn tool
(5)
into starter rod
(3)
hand-tight.
Step 5:
Align flats and slide hex coupler
(2)
back over
hole and onto tool
(5)
.
Step 6:
Install and tighten cap screw
(6)
in tapped hole
(4)
to hold hex collar in place.
Disconnect
Step 1:
Remove cap screw
(6)
.
Step 2:
Tap hex coupler
(2)
with hammer to loosen. If necessary, apply heat to loosen coupler.
Step 3:
Unthread tool
(5)
.
WARNING:
Eye protection must be worn when removing and installing roll pins. Serious
eye injury can occur if struck by steel chips from the hammer, punch, or roll pin.
3
6
4
2
1
5
