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TM 5-2420-222-20-3
PRESSURE CONTROL VALVE - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
INSTALLATION - CONTINUED
59.
Loader backhoe
Hydraulic oil filter
Install (page 2-1217).
relief valve
60.
Transmission
Check fluid level and add proper amount
and grade (TM 5-2420-222-10).
Do not shut down engine at this time.
61.
Engine
Run at high idle (TM 5-2420-222-10).
62.
Pressure control
a.
Raise and lower loader bucket
valve
(TM 5-2420-222-10) and check for leaks.
b.
If leaking at any connection, tighten
using 7/8-inch, 1 3/8-inch, 1 1/4-
inch, or two 1 1/4-inch open-end
wrenches or 1 1/16-inch and 1 1/4-
inch open-end wrenches.
c.
If leaking does not stop, shut down
engine (TM 5-2420-222-10) and
replace leaking connection packing or
fitting or valve component as outlined
in this task.
d.
If found leaking, repeat steps 60
thru 62).
63.
Engine
If still running, shut down
(TM 5-2420-222-10).
ADJUSTMENT
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.
64.
Hydraulic system
Release pressure (page 2-1191).
WARNING
Be careful when draining hot fluids. Wear gloves to protect your hands from hot parts and fluids
or severe burns could result.
2-1210
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