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TM 5-2420-222-20-3
HYDRAULIC EARTH DRILL HOSES AND FITTINGS - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL
NOTE
Steps 1 and 2 only apply to loader backhoes with Serial Numbers 235786 thru
235999.
1.
Two bushings (1)
Two hoses (2 and 3)
a.
Place 1-gallon flexible container
underneath.
b.
Using 3/4-inch open-end wrench, unscrew and
take out.
c.
Tag (page 2-137).
2.
Boring head (4)
Two bushings (1)
a.
Using 1/2-inch drive socket and ratchet
with assembled
handle, unscrew and take out.
packings (5)
b.
Plug boring head (4) (page 2-137).
NOTE
Steps 3 and 4 only apply to loader backhoes with Serial Numbers 319995 thru
342573.
3.
Two straight
Two hoses (2 and 3)
a.
Place 1-gallon flexible container
adapters (6)
underneath.
b.
Using 7/8-inch and 1-inch open-end
wrenches, unscrew and take out.
c.
Tag (page 2-137).
4.
Boring head (4)
Two straight
a.
Using 1 1/4-inch, 1/2-inch drive socket
adapters (6)
and ratchet handle, unscrew and take
with assembled
out.
packings (5)
b.
Plug boring head (4) (page 2-137).
5.
Straight adapter (7)
Hose (8)
a.
Place 1-gallon flexible container
underneath.
b.
Using 9/16-inch and 11/16-inch open-
end wrenches, unscrew and take out.
c.
Tag (page 2-137).
6.
Elbow (9)
Straight adapter (7)
a.
Using 11/16-inch, 1/2-inch drive socket
and ratchet handle, unscrew and take out.
2-1856
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