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TM 5-2420-222-20-3
BOOM-TO-BACKHOE CONTROL VALVE HYDRAULIC IMPACTOR RETURN OIL LINE (SERIAL NUMBERS 319995
THRU 342573 ONLY) - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
INSTALLATION
32.Boom (1)
Tube (2)
a.
Takeoff tag.
b.
Place in position.
33.Boom (1) and
Jamnut (3)
Screw in and tighten using 1 1/4-inch
tube (2)
open-end wrench.
34.Tube(2)
Hose(4)
a.
Unplug.
b.
Take off tag.
c.
Screw on and tighten using I 1/4-inch
open-end wrench.
35.
Hose (5)
a.
Take off tag.
b.
Screw on and tighten using 11/8-inch
and 1 1/4 inch open-end wrenches.
36.Nine hoses
New bands (14)
a.
Place same quantity in relative
(5 thru 13)
positions noted during removal.
b.
Using slip-joint pliers, tighten
until snug.
37.Boom (1) and
Clamp (15)
Place in position.
tube (2)
38.Boom (1) and
Screw (16) and new
Screw together and tighten using 9/16-
clamp (15)
special nut (17)
inch, 3/8-inch drive socket, ratchet
handle, and 9/16-inch open-end wrench.
39.Bracket (18)
Hose (5)
Place in position.
40.Bracket (18),
Clamp (20)
Place in position.
isolator (19),
and hose (5)
41.Bracket (18) and
Screw (21) and new
Screw together and tighten using 9/16-
clamp (20)
special nut (22)
inch, 318-inch drive socket, ratchet
handle, and 9/16-inch box wrench.
42.Union adapter (23)
New packing (24)
Place in position.
2-1496
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