MAGNATRAC MH7000 Operator / Technical Manual page 53

When grave markers prevent a straight-in position
back the tractor in at a 45° or 90° angle to the grave site.
Position the tractor close enough to the grave to dig a
full depth straight wall at the far end of the grave.
Start digging in the middle of the grave. At first, take
shallow bites around the edges to avoid damage to the
surrounding sod. After a on-foot (304.8 mm) depth is
reached, full buckets can be removed, wherever possible.
When the desired depth is reached, finish the end
walls. Finish the far wall by crowding out and forcing
down.
Lift up and crowd in to finish the close end wall.
PIPELINE LEAK REPAIR
Locate the pipeline with a bellhole about six feet (182
cm) wide and tenn feet (304 cm) long. Then dig
lengthwise along the pipeline to locate the leak.
When the leak is located, position the unit to dig at
grade level on both sides of the pipeline.
If a length of pipe must be replaced, strip the soil form
both ends of the bellhole. Dig the bellhole or trench large
enough to allow the workmen adequate space in the leak
area.
BACKFILLING
Backfill by lifting the bucket over the spoil pile and
then crowding in. Pull both the crowd and lift levers for
smooth, even backfilling.
IMPORTANT: Do not backfill by using the swing
circuit and dragging the bucket sideways.
Doing so can cause damage to the dipstick,
boom, swing cylinders, or main-frame.