OPERATION MISCELLANEOUS
33
Locate the pipeline with a bellhole about six feet
(1828.8 mm) wide and ten feet (3048 mm) 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 from
both ends of the bellhole. Dig the bellhole or trench
enough to allow the workmen adequate space in the
leak area.
FINISHING STRAIGHT WALLS
Finish the far wall by crowding out while forcing the
bucket down with the boom. Actuate the bucket (curl
out) to keep the bottom of the bucket vertical.
To finish the rear wall, lift up and crowd in. Keep the
edges of the bucket horizontal.
When finishing straight walls or bellholes in sandy soil,
use a platform under the rear tires and the stabilizers.
The platform distributes the load over a large area and
lessens the possibility of a cave-in. The platform also
tends to keep the unit from creeping rearward if hard
digging is encountered.
BACKFILLNG
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 cir-
cuit and dragging the bucket sideways. Doing so can
cause damage to the dipstick, boom, swing cylinders,
or mainframe.
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