Manitowoc National Crane 800D, Руководство оператора и по обслуживанию

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National Crane
Published 5-27-2018 Control # 039-06 5-43
800D SERVICE
a thorough check of the circuit should be performed. If the
wire on the reel is determined to be faulty, replace the wire.
Do not, under any circumstances, work at an elevated
height without using proper fall protection as required
by local, state or federal regulations.
Alternative No. 1
This method pulls the replacement wire through the boom
using the defective wire as the installation tool.
Special tools and equipment
•Two end-to-end electrical butt connectors
•40 ft (12,2 m) flexible wire or light cord
1. Retract boom completely.
2. Unplug electrical connector at sheave case end of
boom.
3. Remove electrical connector from the anti-two-block
wire running to the reel.
4. Remove the capscrew, anchoring the anti-two-block
wire at the hoist end of the 4th section.
5. Remove the capscrew, washers and nut, anchoring the
anti-two-block wire at the sheave case end of the 4th
section.
6. Pull the wire about 2 ft (0,6 m) out the sheave case end
of the boom.
7. Cut the thimble off of the wire.
8. Attach the 40 ft (12,2 m) length of flexible wire or light
cord to the end of the anti-two-block wire using the end-
to-end electrical butt connector.
9. Let the spring tension on the reel slowly pull the wire or
cord back through the boom.
10. Remove old wire from reel and replace with new anti-
two-block wire.
11. Route the new wire through the sheave at the hoist end
of the boom and attach the end of the anti-two-block wire
to the end of the wire routed through the boom using the
second end-to-end butt connector.
12. Draw all of the light cord or flexible wire through the
boom plus an additional length of anti-two-block wire
long enough to install the first thimble for the sheave
case end of the boom. Install thimble per instructions.
13. Draw enough additional anti-two-block wire to install the
other two thimbles on the anti-two-block wire. Refer to
drawing. Install thimbles per instructions.
14. Allow the reel to retract the two thimbles back into the
boom.
15. At the hoist end of the boom, attach the two thimbles to
the 4th boom section making sure that the thimbles point
in opposite directions and that the loop in the cord is at
the top of the anchor. Tighten the capscrew until it
bottoms out in the threads.
16. At the sheave case end of the boom, attach the thimble
in the slot and pull it towards the open end of the boom
to tension the anti-two-block wire.
17. Attach the electrical connector and connect to the
switch.
18. Slowly operate the boom to make sure that the anti-two-
block wire runs freely in the boom and that the cable reel
runs properly.
19. Test the anti-two-block circuit for proper operation and
hydraulic circuit cut out.
Alternative No. 2
This method requires pushing a long rod through the boom
to pull the new anti-two-block wire through the boom. This
method is required in the event the anti-two-block wire is
severed.
Special tools and equipment:
•Electrical tape
•Rod or electrical conduit 30 ft (9.1 m)
1. Retract boom completely.
2. Unplug electrical connector at sheave case end of
boom.
3. Remove electrical connector from the anti-two-block
wire running to the reel.
4. Remove the capscrew, anchoring the anti-two-block
wire at the hoist end of the 4th section.
5. Remove the capscrew, washers and nut, anchoring the
anti-two-block wire at the sheave case end of the 4th
section.
6. Cut the shrink tube at each thimble connection in order
to reuse the thimbles.
7. Insert the rod or conduit into the sheave case end of the
boom and push through the full length of the boom.
8. At the hoist end of the boom, the rod or conduit will be
below the roller guides at the backs of the extending
sections.
9. Lift the rod or conduit and pull it out the back end of the
boom about 1 ft (0.3 m).
10. Install the new anti-two-block wire on the reel.
11. Route the new wire through the sheave case at the hoist
end of the boom and through the roller guides on the
back end of each extending section.
12. Pull the anti-two-block wire out the hoist mount end of
the boom and tape securely to the rod or electrical
Fo
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Reference
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