Section 4 –
AUXILIARY WINCH - HOW TO INSTALL AND DETACH BOOM HEAD
Mini-Crawler Crane M A E D A
4-138 1/2019 MC285C-3
11. Hold the wedge socket and put it through
protect weight (14) and then insert to hook to
align holes of connection base (22) and
wedge socket (23).
Insert wedge socket pin (24) to the aligned
holes, and align hole of wedge socket pin (25)
and hole of wedge socket (26), then secure
with spring washer (27) and bolt (28).
Fig. 4-370
12. Separate length sensor bullet connector (29)
and bullet connector (30) on machine side.
Fig. 4-371
13. Connect the length sensor bullet connector
(29) to bullet connector (relay harness) (31)
on boom head side.
Fig. 4-372
14. Disconnect hook lowering stop harness (32)
from harness (33) on machine body side and
connect to harness (34) for auxiliary winch.
Fig. 4-373
NOTICE: Put dummy plug to the disconnected
harness.
15. Raise hook block by operating boom lifting
lever to raise boom (pull) or boom telescoping
lever to extend boom (push forward).
NOTICE: Winch operation is allowed only after the
hook block is raised.
16. Fully extend and fully raise boom, and
operate hook lowering (push winch lever
forward) to run out wire rope on auxiliary
winch unit as close as to the ground.
NOTICE: Do not let hook block to touch the
ground.
17. Keep wire rope at tension and operate hook
raising (pull winch lever) to wind wire rope on
auxiliary winch unit.
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