TM 9-2330-390-14&P
4-83. TOP AND BOTTOM BEAMS AND POSITIONING CYLINDERS REPLACEMENT
(Con’t).
• DO NOT 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. Dolly set must be fully lowered to the ground and engine
must be shut down before lines and fittings are disconnected. A line or fitting
disconnected under pressure will explode with great force and cause serious injury
or death to personnel.
• Escaping hydraulic fluid under pressure can penetrate the skin, causing serious
injury to personnel. Relieve pressure before disconnecting hydraulic lines and
fittings. Tighten all connections before applying pressure. Keep hands and body
away from pinholes and nozzles which eject hydraulic fluid under high pressure. Use
a piece of cardboard or paper to search for leaks. If any hydraulic fluid is injected
into the skin, it MUST be surgically removed within a few hours by a doctor familiar
with this type of injury or gangrene may result.
1.
Disconnect two hose assemblies (6) from straight connectors (5) at positioning cylinders (2) inside bottom
beam (3).
2.
Remove two straight connectors (5) and preformed packings (4) from positioning cylinders (2). Discard
preformed packings.
3.
Attach a suitable lifting device to top beam (1) and adjust so that weight of top beam is on lifting device.
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