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 TM 55-1905-223-24-10
2-5. Preliminary Servicing and Adjustment . Perform the following procedures to prepare the bow ramp assembly for
operation after installation.
WARNING
o
Ensure that all person nel are clear of the winch, wire ropes, sheaves,
chains, chain stoppers, wildcats, ramp, and ramp hinges before operating
the bow ramp winch subsystem to raise or lower the ramp. Notify
operations personnel before starting the bow ramp winch subsystem.
o
Electrical components contain high voltages that can cause severe injury
or death.
Before servicing, adjusting, or replacing electrical or
mechanical components, disconnect power supply to three control panels
and electric motor in the hydraulic power pack assembly.
o
Hydraulic fluid contains chemical compounds that cause irritation or injury
to the skin and eyes. Wear protective clothing, gloves, and eye
protection when working in the vicinity of hydraulic equipment.
Overview of preliminary servicing.
Servicing the assembly after installation is important because if the hydraulic system
pressure is not adjusted correctly, the bow ramp winch will not work.
a.
Add Hydraulic Fluid . Add hydraulic fluid to reservoir tank in the hydraulic power pack assembly as follows:
(1) Remove filler cap/air breather from top of reservoir tank.
(2) Add approximately 150 gallons of hydraulic fluid (Item 2, Appendix C).
(3) Install filler cap/air breather in top of reservoir tank.
b.
Bleed Air from System.
(1) Restore power to bow ramp winch.
(2) Operate bow ramp winch back and forth several times. Open outlet fittings slightly until air is removed and
only fluid seeps out.. Secure fittings. Observe pressure gauge and check for leaks.
(3) Re-check and fill hy draulic fluid levels in reservoir to proper levels.
(4) Check for system leaks.
2-2
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