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SIDE SHIMMING OF BOOM SECTIONS
800D
7-10
Published 5-27-2018 Control # 039-06
ROTATION STOP-MECHANICAL
The rotation stop system is designed to stop crane rotation
beyond 375 degrees in the clockwise or counter-clockwise
directions. This is accomplished by mechanically returning
the control valve to the centered position as full rotation is
approached. The operator will feel the control lever begin to
pull in the opposite direction as full rotation is approached.
The operator should not resist this counteracting force, but
permit the rotation stop system to return the lever to neutral.
If a load cannot be reached or placed due to the available
rotation, the crane must be re-positioned. Attempting to
override the rotation stop system will result in damage to the
crane and possible injury to the operator.
Adjustment Procedure
There are two methods that can be used for adjusting the
rotation stop system.
Method 1
1. From inside of the frame, rotate the flag rod until it is
centered between the two stop pins on either side of the
flag.
2. Make certain that the turn lever is vertically aligned. If
not, adjust the lever at the clevis connecting it to the
control valve.
3. With the turn lever vertically adjusted, verify that the
spacer is centered in the turn control rod tab.
4. If it is not centered, loosen the two nuts, one on either
side of the spacer. Turn the nuts in the same direction
until the spacer is centered. Tighten the nuts against the
ends of the spacer to secure it in place.
5. Verify that the flag is still centered between the stop pins.
Method 2
1. Follow the crane set-up procedures in this manual to set
outriggers and stabilizers and level the machine.See
“Proper Leveling of the Crane” on page 10.
2. With the crane properly set-up, raise the boom to near
full boom angle (75-80 degrees). This must be done with
the boom fully retracted and with no load attached to the
loadline.
3. Slowly rotate the boom until is directly over the front of
the truck (behind cab mounting). With the boom directly
over the front, place a mark at the top of the frame
aligned with the center of the lift cylinder.
4. Rotate the crane clockwise, or counter-clockwise until
the rotation stop system centers the control lever.
5. Again make a mark at the crane frame aligned with the
center of the lift cylinder.
6. Now rotate the crane in the opposite direction until the
rotation stop system centers the control lever.
7. Make another mark on the crane frame aligned with the
center of the lift cylinder.
8. If the rotation stop system is properly adjusted, the
distance should be the same from the first mark made to
the second mark, as it is from the first mark to the third
mark.
9. If not, loosen the nut on either side of the spacer on the
flag rod actuator rod and adjust the position of the
spacer. Tighten the two nuts and repeat steps 3 through
7 above until proper adjustment is achieved.
9417
9418
Fo
r
Reference
Only
Содержание National Crane 800D
Страница 1: ...Operator and Service Manual National Crane 800D F o r R e f e r e n c e O n l y ...
Страница 4: ...F o r R e f e r e n c e O n l y ...
Страница 98: ...MAINTENANCE 800D 3 10 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 194: ...SPECIFICATIONS 800D 8 4 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 216: ...INSTALLATION 800D 9 22 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 232: ...CRANE INSTALLATION 800D 10 16 Published 5 27 2018 Control 039 06 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Страница 252: ...SCHEMATICS 800D 2 Published 5 27 2018 Control 039 06 F o r R e f e r e n c e O n l y ...
Страница 255: ...F o r R e f e r e n c e O n l y ...
Страница 256: ...F o r R e f e r e n c e O n l y ...