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Page 16
SINGLE REEVED HOISTS
Stretch new cable on floor in one continuous length. Make
certain there is no twist in rope.
(1) Place one end of rope in rope drum anchor slot. Be
sure end fitting is properly seated.
(2) With all personnel clear of hoist - TURN ON POWER.
(3) Operate hoist “UP,” guiding new rope into drum
grooves with gloved hand, until the following lengths
remain unwound:
(a) 2 part single reeved - about 14'-0"
(b) 4 part single reeved - about 28'-0"
(c) 6 part single reeved - about 42'-0"
(d) 8 part single reeved - about 56'-0".
(4) Proceed with reeving as described in appropriate
paragraph below and the reeving diagram for your
hoist.
DOUBLE REEVED HOISTS
Stretch new cable on floor in one continuous length. Make
certain there are no twists in rope.
(1) Pull far end of rope toward end of rope nearest hoist,
until both ends are even and a loop is formed. Place
fittings on both ends of rope in anchor slots on rope
drum. Be sure end fittings are properly seated.
(2) With all personnel clear of hoist - TURN ON POWER.
(3) Operate hoist “UP,” guiding rope into grooves at both
ends of drum, until the distance from the drum to the
loop is:
(a) 2 part double reeved - about 14'-0"
(b) 3 part double reeved - about 21'-0"
(c) 4 part double reeved - about 28'-0"
(d) 5 part double reeved - about 35'-0"
(e) 6 part double reeved - about 42'-0".
(4) Proceed with reeving as described in appropriate
paragraph below and the reeving diagram for your
hoist.
d. Reeving - 2 part single.
See Figure 5-8,
%
for diagram.
See Figure 9-14 for bottom block parts with 3/8" or 7/16"
rope.
See Figure 9-15 for bottom block parts with 9/16" rope.
With new rope installed on drum as described in
Paragraph 5-9.c, single reeved above, proceed with
rereeving following steps below:
(1) Thread the remaining cable end through limit switch
weight, then pass it over partial sheave, inside hoist,
and insert in anchor fitting at hoist frame. Be certain
power is off before opening electrical compartment
cover for access to anchor fitting. Properly seat rope
end fitting in socket and replace cotter pin in end of
socket.
(2) Grasp loop, formed after installing end anchor, and
place bottom block sheave in loop. Lower sheave into
bottom block and insert sheave pin. Replace key plates
and bolts holding sheave pin in place.
(3) Replace sheave guard. Make certain rope is not
twisted. Should the two parts of rope tend to wind
around each other, remove cable from anchor slot
and untwist cable. Reattach the cable anchor.
(4) Lubricate cable per Paragraph 4-3.
e. Reeving - 4 part single.
See Figure 5-8,
&
for diagram.
See Figure 9-14 for bottom block parts with 1/4", 5/16",
3/8", 7/16" rope.
See Figure 9-15 for bottom block parts with 9/16" rope.
With new cable installed on drum as described in
Paragraph 5-9.c, single reeved above, proceed with
rereeving following steps below:
(1) Grasp the cable near the middle (about 14'-0") of the
unwound end and form a loop. Place upper sheave in
this loop. Slide upper sheave with cable into sheave
pocket.
(2) Insert sheave pin into sheave. Replace key plates
and bolts to hold sheave pin in place.
(3) Thread rope end socket through limit switch weight;
then, pass it over partial sheave, inside hoist, and
insert in anchor fitting at hoist frame. Be certain power
is off before opening electrical compartment cover for
access to anchor fitting. With end fitting properly
seated in anchor, replace cotter pin in end of socket.
Two loops have now been formed for bottom block
sheaves.
(4) Place one sheave in each loop. Install one sheave
with cable in bottom block; partially insert sheave pin
to hold sheave in place. Note: Some blocks have
spacer washers between sheaves. Be certain to install
spacer washers between sheaves, when shown on
parts illustration. Install second sheave with cable into
bottom block. Slide sheave pin through sheave.
Replace key plates and bolts securing sheave pin.
(5) Replace sheave guard.
(6) Lubricate cable per Paragraph 4-3.
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