10. Release the hoist brake by operating the pump. Attach a tag line to the
boom nose and pull the boom around while pumping. Pull the boom to
center, front, until the swing lock pin can be installed. Install the lock pin.
11. The boom fly section may now be retracted. Disconnect the pump
pressure line from the swing brake line (reconnect the ends of the swing
brake line). Plug the pump pressure line into the female disconnect half
provided on the inlet side of the A-20 valve bank, under the left-front of the
12. While holding the TELESCOPE control lever (3, figure 4-1) at the
RETRACT position, operate the hand pump to retract the boom. Retract the
boom fully and secure the hook block to the front pintle hook.
13. To retract the outriggers, leave the pump pressure line connected to
the A-20 valve bank. Operate the hand pump while the OUTRIGGER control
lever (4, figure 4-1) is held in the RETRACT position and the outrigger
selector valve lever (16) is positioned toward the selected outrigger(s) to be
retracted. Complete the outrigger retraction to full-up, stowed position.
14. Disconnect, coil, and stow the hand pump pressure hose in the right
hand tool box (inside the door). Disconnect the supply line to the hand pump
and stow in front compartment. Remove the hand pump and handle from the
front of the crane and stow them in the right tool box. Replace the front cover.
OPERATION AT TEMPERATURE EXTREMES
COLD WEATHER OPERATION
If sustained temperatures between +40 and -25F are expected, the
following precautions should be taken to ensure uninterrupted performance
of the SCAMP crane:
Drain the MIL-L-2104, grade 10 oil from the hydraulic system and
transmission/converter and replace with MIL-L-46167 arctic oil.
Ensure that engine anti-freeze coolant mixture is 50% solution of
ethylene glycol, inhibited, heavy duty, per MIL-A-46153.
Drain the fuel tank of regular diesel fuel and refill with arctic diesel
fuel. Run the crane engine for a sufficient length of time to purge the fuel
system of the regular diesel fuel. Drain the fuel system water separator.