Ditch Witch JT920, Manual

Page: 108 / 169

108
JT920/JT920L - OPERATION
ASSEMBLE BACKREAM STRING
108
JT920/JT920L - OPERATION
ASSEMBLE BACKREAM STRING
Attach Pullback Device
Pullback devices are available for a wide variety of soil types and
pullback material. To determine the best pullback combination for
your job, contact your Ditch Witch dealer.
1. Move remote throttle switch to idle position.
2. Press bottom of drilling unit throttle switch until engine is at
low throttle.
3. Move fluid pump switch to off position.
4. Turn drilling unit off.
5. Clean drill head, especially around threads.
6. Loosen and remove EZ-Connect retaining bolt.
7. Slide collar back toward transition sub.
8. Hand loosen and remove drill head.
9. Hand tighten EZ-Connect pin of backreamer into EZ-Connect
box of transition sub until shoulders are touching.
10. Back backreamer off one flat and slide collar onto pin until
retainer bolt hole is visible.
11. Install retainer bolt and tighten.
Attach Pullback Device
Pullback devices are available for a wide variety of soil types and
pullback material. To determine the best pullback combination for
your job, contact your Ditch Witch dealer.
1. Move remote throttle switch to idle position.
2. Press bottom of drilling unit throttle switch until engine is at
low throttle.
3. Move fluid pump switch to off position.
4. Turn drilling unit off.
5. Clean drill head, especially around threads.
6. Loosen and remove EZ-Connect retaining bolt.
7. Slide collar back toward transition sub.
8. Hand loosen and remove drill head.
9. Hand tighten EZ-Connect pin of backreamer into EZ-Connect
box of transition sub until shoulders are touching.
10. Back backreamer off one flat and slide collar onto pin until
retainer bolt hole is visible.
11. Install retainer bolt and tighten.