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(1) Push "DOWN" button and run old rope out until stopped
by lower limit switch.
2) Disassemble the load block by removing the spring pins
(12, Figure 8-9B) and the slotted nuts (9, Figure 8-9B).
The block covers (11, Figure 8-9B) will still be captured
by the rope. Clean and inspect the hook, sheaves,
bearings, and yoke for wear, damage, etc. Replace parts
as necessary. Do not reassemble the load block yet.
3) DISCONNECT POWER from the hoist and remove the
short end cover.
4) With a screwdriver, push the spring guide plate (1, Figure
5-1) out of the slots in the limit switch nuts. Turn the zinc
slotted nut (3) back to about the center of the threaded
screw. DO NOT DISCONNECT THE WIRES FROM THE
LIMIT SWITCHES.
5) With the end cover off, connect hoist to power supply. Be
sure the green wire is grounded.
6) Carefully jog the "DOWN" button until all the old rope is
run off and the drum socket openings are accessible.
7) DISCONNECT POWER from the hoist.
8) Remove the equalizer sheave (A, Figure 5-4 or 5-5) by
removing one retaining ring (B) and the sheave pin (C).
Clean and inspect these parts.
9) Slide the sleeve fittings out of the drum sockets and out
of the block covers. Remove and discard the old rope.
10) Place paper on floor to protect the new wire rope from
dirt and grit. Stretch the new rope out in one length and
relieve any twist. The double the rope by bringing the two
sleeve fittings together.
11) Pass each sleeve fitting through the rope openings in the
block covers only. The block should remain disassembled
at this point.
12) Insert each sleeve fitting into the drum sockets, making
sure the fittings are properly seated.
Figure 5-5. Two Part Single Reeving:
Low Headroom Models
13) Push the "UP" button until a few wraps of rope are wound
onto the drum. Apply slight tension to the ropes with
gloved hands to wind the rope evenly on the drum.
14) Place the looped end over the equalizer sheave and return
the sheave to its frame. Reinstall the sheave pin and
retaining ring.
15) At this point, only the block covers will be hanging from
the two loops of rope.
Figure 5-6. Assembly of Load Block
Two Part Double Reeved
16) Refer to Figure 5-6 for assembly of load block. Pull a
loop of rope to the inside of the block cover (A), and
place a sheave (B) in this loop. Angle the top of the
sheave into the cover, while keeping the rope seated in
the sheave groove. The sheave will now drop to the inside
wall of the cover. Place the sheave and cover, as one
unit, over the yoke (C), and hand tighten the slotted nut.
Repeat for the other side. Tighten both slotted nuts and
install the spring pins. Refer to Figure 5-4 or 5-5 to make
sure that the rope is reeved correctly.
17) Adjust the limit switched per paragraph 5-2.
18) Lubricate the wire rope for paragraph 5-5a. Test the hoist
and break-in the wire rope per paragraph 2-6b.
5-5. Lubrication
Proper lubrication is necessary for long, trouble-free hoist
operation. Refer to the following and to Table 5-1,
Recommended Lubrication Schedule, for lubrication points, type
of lubricant and frequency of lubrication.
a. Wire Rope: Lubrication of the wire rope is important. The
action within the rope as it moves over the drum or around
the sheave is for the strands to slide one against the other.
Lubrication will reduce this friction and prevent the entrance
of moisture which can cause corrosion. Frequent light
applications of lubricant are better than infrequent heavy
applications. For best results, use Yale Wire Rope Lubricant
(Part No. 14J49), or other wire rope lubricant. As alternative,
use SAE 30 motor oil.
b. Gearing: The gear case of the hoist is filled at assembly
with 46 oz. of a gear oil containing special friction-reducing
additives.
14026
14027
For more information contact: Sievert Crane and Hoist, (708) 771-1600, parts@sievertelectric.com, www.sievertcrane.com
