Ditch Witch JT30AT - Manual (Page 160)

JT30 /JT30 All Terrain Operator’s Manual
Systems and Equipment - 160
Pipeloader
CMW
Correct Dropped Pipe
To return a dropped pipe to the drill string, turn off engine and manually retrieve pipe. Return it to the pipe
box by loading it as a single piece of pipe. See “Add Single Pipe” on page 162.
Correct Misaligned or Jammed Pipe
One pipe box status light on and one light off indicates a misaligned or jammed pipe. Turn off engine and
inspect pipe in active column.
• If one end of a drill pipe is jammed and will not drop correctly from pipe box, inspect pipe box position.
If pipe box appears to be improperly aligned with discharge chute, return to operator’s station and
move pipe box slightly until mechanical pointer is in center of appropriate dot on decal (see page 159)
for active column.
• If drill pipe is bent, remove it from pipe box and discard.
Rotate Drill Pipe Order
Rotating the lead pipe is a manual process. Rotate drill pipes in the drill string weekly.
Guidelines
• Rotate only as many columns as used on the longest bore of the week. For example, if the longest
bore was 320’ (98 m), then only rotate the four columns used.
• Plan to rotate the pipes during the longest bore of the week.
Procedure
1. Before beginning pullback, temporarily remove next pipe from the box. See “Add/Remove Single Pipe”
on page 161. Close both auxiliary pipe loaders.
2. Follow regular pullback procedure to load remaining pipe into pipe box.
3. When all pipes (except lead pipe on AT units) have been returned to pipe box, open both auxiliary pipe
loaders, see “Add/Remove Single Pipe” on page 161, place the pipe that was temporarily removed in
step 1 into the remaining position in the delivery chute.
4. Turn off engine.
5. Close both auxiliary pipe loaders.
NOTICE: If neither of the causes and solutions outlined above correct the misaligned or jammed pipe,
contact your Ditch Witch dealer for assistance.