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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
REMOVAL - CONTINUED
11.Boom (1) and
Screw (3) and
a.
Using 9/16-inch, 3/8-inch drive
clamp (2)
special nut (4)
socket, ratchet handle, and 9/16-inch
open-end wrench, unscrew and take
off.
b.
Get rid of special nut (4).
12.Boom (1) and
Clamp (2)
Take off.
tube (5)
13.Nine hoses
Bands (15)
a.
Note location and quantity for proper
(6 thru 14)
placement during installation.
b.
Using diagonal-cutting pliers, cut
off.
c.
Get rid of.
14.Tube (5)
Hose (6)
a.
Place drain pan underneath.
b.
Using 1 1/8-inch and 1 1/4-inch open-
end wrenches, unscrew and take out.
c.
Tag (page 2-137).
15.
Hose (16)
a.
Place drain pan underneath.
b.
Using 1 1/4-inch open-end wrench,
unscrew and take off.
c.
Plug (page 2-137).
d.
Tag (page 2-137).
e.
Get rid of drained fluid (page 2-137).
16.Boom (1) and
Jamnut (17)
Using 1 1/4-inch open-end wrench,
tube (5)
unscrew and take off.
17.Boom (1)
Tube (5)
a.
Take out.
b.
Tag (page 2-137).
DISASSEMBLY
18.Adapter (18) and
Nut (20)
a.
Place adapter (18) in machinist’s
adapter (19)
vise.
b.
Using 1 1/8-inch and 1 1/4-inch open-
end wrenches, loosen.
2-1492
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