Elliott Digger Derrick, Руководство по эксплуатации и техническому обслуживанию, Страница: 114 / 376

Jib Operation EEC-0044 V1.1
Jib Operation
F. Attach tag line to sheave case end of jib.
G. Remove spring clips from pins ‘ C2’ on both upper and lower jib ears.
H. Remove pins ‘ C2’ from upper and lower jib ears. Do not remov e ‘ C1’ pins at
this time. ‘ C1’ pins will be used as a pivot point to swing jib into stowed position.
A slight hammer strike may be necessary to remove pins. Always use proper eye
protection during this step.
I. Using lift function, raise boom to a horizontal position.
J. Using telescope function, extend boom approximately 1 foot.
K. Using tag line, slowly swing jib into stow position (parallel with 1st section boom).
Pins ‘ C1’ are the jib pivot points during this operation.
Use Caution when swinging jib to avoid unnecessary impact with 1st section.
L. Install jib-swing pin ‘ B’ with spring clip through jib ear and boom sheave case
holes. This pin will keep the jib assembly in line (parallel) with the 1st section
boom. Jib swing pin ‘ B’ does not retain the jib in its stowed position on the 1st
section boom.
M. Using boom telescope function, slowly retract boom. The ramp/side stow bracket
assembly on the side of the 1st section jib will engage the hook on the side of the
1st section boom, first lifting the jib and then engaging the jib side stow bracket
and the boom hook completely upon full retraction of the boom.
N. Install stow pin ‘ A’ with spring clip into the ramp/side stow bracket assembly on
the jib. Complete engagement of stow brackets and proper installation of pin ‘ A’
is critical for secure jib stow attachment.
O. Remove pins ‘ C1’ from upper and lower jib ears. A slight hammer strike may be
necessary to remove pins. Always use proper eye protection during this step.
P. Reinstall loadline over boom sheave case.
Visually inspect all pin positions to assure jib is fully retracted into side
stow brackets, jib stow attachment is secure, and all pins and spring clips are in