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TM 5-2420-222-20-3
MANIFOLD BLOCK-TO-HEAD END BOOM CYLINDER OIL LINE - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL - CONTINUED
WARNING
Do not attempt to disconnect hydraulic lines and fittings while engine is running or before
hydraulic system pressure has been released. When engine is running, hydraulic system is under
pressure. Hydraulic system pressure should be 0 psi (0 kPa) before lines are disconnected. A line
or fitting disconnected under pressure will blow off with a lot of force and could cause serious
injury to personnel.
Be careful when draining hot fluids. Wear gloves to protect your hands from hot parts and fluids
or severe burns could result.
3.
Two union adapters
Two hoses (3 and 4)
a.
Place drain pan underneath.
(1 and 2)
b.
Using 7/8-inch and 1-inch openend
wrenches, unscrew and take out.
c.
Tag (page 2-137).
d.
Cap hose (4) and adapter (2)
(page 2-137).
4.
Union adapter (1)
Nut (6)
Using 7/8-inch and 1-inch open-end
and manifold
wrenches, loosen.
block (5)
5.
Manifold block (5)
Union adapter (1)
a.
Note relative position for proper
with assembled parts
placement during installation.
b.
Using 1-inch open-end wrench,
unscrew and take out.
c.
Plug manifold block (5) (page 2-137).
6.
Union adapter (1)
Packing (7)
a.
Using pocket knife, take off.
b.
Get rid of.
7.
Union adapter (8)
Hose (3)
a.
Place drain pan underneath.
b.
Using 7/8-inch and 1-inch open-end
wrenches, unscrew and take out.
c.
Tag (page 2-137).
8.
Boom cylinder(9)
Union adapter (8)
a.
Using 1 1/4-inch open-end wrench,
with assembled
unscrew and take out.
packing (10)
b.
Plug cylinder (9) (page 2-137).
unscrew and take out.
c.
Get rid of drained fluid (page 2-137).
9.
Union adapter (8)
Packing (10)
a.
Using pocket knife, take off.
b.
Get rid of.
2-1566
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