Ditch Witch JT920, Manual

Page: 100 / 169

100
JT920/JT920L - OPERATION
SURFACE DRILL HEAD
100
JT920/JT920L - OPERATION
SURFACE DRILL HEAD
SURFACE DRILL HEAD
1. Guide drill head to target pit or up through surface. Make all
bends gradual. See "Bend Limits" in
SETUP .
2. Clean area around exit point.
3. Turn fluid flow control to off position and remote throttle
switch to idle position as soon as drill head emerges.
4. Clean drill head especially around threads.
5. Attach quick wrench in break position.
NOTICE: Never use machine torque to tighten or loosen any
joint. Use quick wrench only.
• Place jaws (1) on wrench flats on both sides of joint.
• Pin handles (2) to wrench jaws. Be sure handles are both
up.
• Attach pivoting nut heads (3) so that screw (4) is over joint.
• Turn screw to pull handles together.
6. Loosen joint.
7. Turn screw opposite way two turns to relieve pressure and
remove quick wrench components.
8. Remove drill head.
om2053a.eps
SURFACE DRILL HEAD
1. Guide drill head to target pit or up through surface. Make all
bends gradual. See "Bend Limits" in
SETUP .
2. Clean area around exit point.
3. Turn fluid flow control to off position and remote throttle
switch to idle position as soon as drill head emerges.
4. Clean drill head especially around threads.
5. Attach quick wrench in break position.
NOTICE: Never use machine torque to tighten or loosen any
joint. Use quick wrench only.
• Place jaws (1) on wrench flats on both sides of joint.
• Pin handles (2) to wrench jaws. Be sure handles are both
up.
• Attach pivoting nut heads (3) so that screw (4) is over joint.
• Turn screw to pull handles together.
6. Loosen joint.
7. Turn screw opposite way two turns to relieve pressure and
remove quick wrench components.
8. Remove drill head.
om2053a.eps