Manitowoc Engineering Co. (5)
BACKSTAY
RIGGING \
OFFSETTING LINK . ~s~O~ "~"i5~'~'-~J///~
h
Insert upper end
DIMENSION "D" ~'
I
i
ADAPTOR UNK
Here, if Used
DIMENSION "D"
BOOM
NO.
Lengths: Insert Anchor
to Insert's Upper End.
8 19'-8"
9
17
15,_I~/~ ''
8'-I0"
22
NOTE: The large taper on the
Anchor Lug is towards the
lower (rear) end of insert.
FIG. 1 i 12-6
LENGTHS
I-I/8"
WIRE ROPE
2 Ea. Req.
59'
63'
JIB BACKSTAY PARTS - WIRE ROPE
FOR
BOOM
NO.
8
9 9A
22
22A
17
WEDGE
SOCKETS
1-I/8"
PINS
I-I/8"
CABLE
CLAMPS
( Strut
End )
JIB
BACKSTAY
STRAP
FIG. 1112-7
10-inch Backstay Straps, (Fig. 1112-4), are used with all
Wire Rope Backstay rigging.
Use the ':L" Dimension, (Fig. 1112-5, - "Sum. of Cols.
1, 2, 3 &4" - and Fig. 1112-4), for the Booms listed on
page 2, to rig for the offsets called for in the Table.
(Note that the 9A 3-Ft. Hammerhead Boom uses a
longer Basic Pendant. This length and the Dimension "L"
lengths for the various,Offsets are given in Note 3 of the
Table, Fig. I 112-5.)
Note also, that the Dimension "L" lengths are valid
only if the Jib Backstay Anchor Lug is located at the
proper distance, (Dimension "D", Fig. 1112-6), which is
standard for present and recent models.
(See paragraphs "Jib Backstay Anchor Lugs". )
9-1-71 (Rev, 8-14-80)
-WEDGE A SOCKET onto one end of each Wire Rope
Backstay.
-DETERMINE THE LENGTH of Wire Rope required for
the Offset desired from the Table, Fig. 11 12-5.
-WEDGE THE SECOND SOCKET onto the Wire Rope so
that the spacing, plus the 10" Backstrap will give the di-
mension caJled for in the Table. Allow for stretch in
the Backstays, and Jib Pendants, when they carry the
Jib weight.
CAUTION: BE
CERTAIN THAT THE BACKSTAYS ARE THE
SAME LENGTH.
JIB
STOPS
Jib Stops are pinned between the Boom and the Jib Butt
to keep the Jib from rocking over backwards should the
Boom be raised to too high an angle. The type of Jib stop
123
JIB
FOLIO 730-5
395143
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