SECTION 4 – BOOM
4-18
USTC
January 15, 2001
3. Remove extend (upper) cable nuts from outer-
mid section at pedestal end of boom.
4. Loosen hose clamps on fly section retract cables
and raise cables. Remove bolts securing cable
anchor to outside of fly section. Raise bullet end
of fly extend cables.
5. At nose end of boom loosen fly section retract
cables and unbolt anchor plate from under
outer-mid section.
6. Using suitable equipment, pull fly and outer-mid
sections out of inner-mid section approximately
one foot to access wear pad bolts at nose end.
Remove side and lower wear pads and shims
and upper wear pad from inside of outer-mid
section at nose end.
7. Using suitable lifting equipment, pull fly section
from outer-mid section.
8. Set fly section on suitable supports.
9. Extend cables and sheaves may be removed
from inside of outer-mid section as required.
Fly Section Installation
1. Hang extend cables to pedestal end of fly sec-
tion with mechanics wire (adjuster end at top,
bullet end on bottom). Stretch cable out for
length of section and support middle of extend
cables at nose end using mechanics wire. Sev-
eral 2 ft. boards laid across top of section will
support the cable. Wire tie ramp at pedestal end
of section to prevent catching it once inside
section.
2. Insert fly section into boom assembly, removing
boards and cable supports along the way. Con-
tinue until retract cables are inside wear pad
locations.
3. Insert side wear pads inside outer-mid section
loosely without shims. Install upper and lower
wear pads, shimming bottom wear pads to 1/16"
clearance. Be sure to orient lower pads toward
outside edge of section.
4. Slide remainder of fly section and any other
sections completely into base section.
5. Lay extend cables in grooves on outside of fly
section. Attach cable anchor blocks on top of
extend cables. Shim as necessary to center the
fly section within the outer-mid section.
6. Loosely attach hose clamp to bullet end of
cable. Lay bullet end of retract cable in cable
anchor block. Slide hose clamp against anchor
block and tighten to prevent cable from coming
out of groove.
7. Install telescope cylinder.
TWO-SPEED HOIST OPERATION
The two-speed hoist is a planetary drive unit with
direct hydraulic drive. An integral brake supports one
side of the hoist and the other side is supported on a
ball bearing.
The two-speed function is achieved by supplying
additional hydraulic oil flow to the hoist motor from
the hydraulic system. One section of the hydraulic
pump supplies 39 gpm at 3200 psi to the hoist motor.
The “Burst-of-Speed” valve, when activated, pro-
vides an additional 24 gpm to the hoist motor from
the second pump section. However, if another func-
tion is activated while in Burst-of-Speed mode, the
Burst-of-Speed mode is automatically deactivated.
Refer to the Braden PD12C hydraulic winch manual
shipped with the crane.
Содержание 2500 jbt
Страница 16: ...SECTION 1 SPECIFICATIONS 1 8 USTC January 15 2001 Courtesy of Crane Market ...
Страница 22: ...SECTION 2 INSPECTION 2 6 USTC January 15 2001 Courtesy of Crane Market ...
Страница 62: ...SECTION 5 SWING DRIVE 5 10 USTC January 15 2001 Courtesy of Crane Market ...
Страница 74: ...SECTION 6 ELECTRICAL 6 12 USTC January 15 2001 Figure 6 11 Clam Shell 1282077 Rev A Courtesy of Crane Market ...
Страница 83: ...SECTION 7 HYDRAULICS 3120933 Rev 0 USTC 7 9 Figure 7 6 Control Valve Linkage Courtesy of Crane Market ...
Страница 91: ...SECTION 7 HYDRAULICS 3120933 Rev 0 USTC 7 17 Figure 7 15 Overload 1282330 Rev C Courtesy of Crane Market ...
Страница 95: ...SECTION 7 HYDRAULICS 3120933 Rev 0 USTC 7 21 Figure 7 19 Emergency Down 2792484 Rev Courtesy of Crane Market ...
Страница 98: ...SECTION 7 HYDRAULICS 7 24 USTC January 15 2001 Powered by TCPDF www tcpdf org Courtesy of Crane Market ...
