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TM 5-2420-222-20-3
HYDRAULIC EARTH DRILL BORING HEAD - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
FILLING - CONTINUED
WARNING
Keep clear of hydraulic components when raised and not supported. Sudden loss of hydraulic
pressure could cause components to drop without warning.
31
Loader backhoe
Hydraulic earth
a.
Check for leaks.
drill hoses and
b.
If leaking, using 9/16-inch, 11/16-
fittings
inch, 3/4-inch, 7/8-inch, 11/8-inch,
or 1 1/2-inch open-end wrench,
tighten and repeat steps 30 and 31.
c.
If leaking does not stop, replace
defective parts (page 2-137).
d.
If leaks were found, fill transmission
(page 2-137).
32
Engine
Shut down (TM 5-2420-222-10).
33
Hydraulic earth
Gear case (2) and
a.
Check for leaks.
drill boring
chain housing (3)
b.
If leaking, using 3/16-inch, 5/16-inch
head (1)
socket-head screw key, or 1 1/8-inch
open-end wrench, tighten parts and
repeat steps 30, 32, and 33.
c.
If leaking does not stop, replace
defective parts as outlined in this
task.
d.
If leaks were found, repeat steps 20
thru 30 and 32 and 33.
34
Loader backhoe
Hydraulic earth
If not to be used, remove
auger attachment
(TM 5-2420-222-10).
2-1878
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