Harrington NTH, Operating Instructions Manual

Page: 23 / 25

Disassembling and Assembling Instructions
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Disassembling of Bottom Yoke and Top Yoke
1. In the case of 5 ton capacity:
(a) Take out Chain Pin (Fig. 46) and Bolt (Fig. 73) for Bottom Yoke and take out Bottom
Yoke (Fig. 69). Take out Bottom Hook Assembly (Fig. 75), Idle Sheave (Fig. 70) and Shaft
(Fig. 71}.
.
(b) Take out Socket Bolts (Fig. 64) for top Yoke and take out Top Yoke. Take out Top
Hook (Fig. 66), Idle Sheave (Fig. 61) and Shaft (Fig. 62).
2. In the case of 1 1/2, 2, and 3 ton capacity:
(a) Take out two Bolts (Fig. 51) which fix Bottom Yoke and take out Bottom Yoke (Fig. 50}.
Take out Bottom Hook (Fig. 56), Idle Sheave (Fig. 55) and Shaft (Rg. 53).
(b) Take out Split Pin (Fig. 48), Slotted Nut (Fig. 47) and Chain Pin (Rg. 46) which fix Top
Yoke and Load Chain.
Note 1: Do not unscrew Tap Socket Bolt (Fig. 41) which fIXesTail Pin.
Note 2: Do not take out any of the four ball bearings.
")sembling of Hoist
~.
Assembling of Accessories
1. Single fall type Bottom Hook 1, 1 1/2 ton capacity:
(a) Put the end of Load Chain (Fig. 42) and Bottom
Hook
Assembly (Fig. 5) into Bottom
Yoke (Rg. 5) and fix Botto~ Yoke
witt'
Socket Bolt (Rg. 7) and U Nuts (Fig. 8).
2. Double fall type Top Hook~ Bottom Ho~k 2, 3 ton capacity:
(a) Put lightly greased Shaft with Spring Pin (Rg~ 53,54) into thegr-oove of hole in Bottom
Yoke (Rg. 50) and put Shaft into Idle Sheave (Fig. 55).
(b) Wind load chain on Idle Sheave with the welded part of load chain turned inside..
(c) Put Bottom Hook (Rg. 56) into Bottom Yoke and cover it with the other Bottom Yoke
and fix it with two Socket Bolts (Rg. 51) and Lever Nuts (Rg.52).
(d)FIX the other end of load chain to Top Yoke with Chain Pi~ (Rg~46), Slotted Nut (Fig.
47) and Split Pin (Rg. 48). Make sure that load chain is not twisted.
3. Triple type Top Hook, bottom hook5ton.capacity: .
,
" " - '.. .
,
. I
.
' .
fa) Putlightl¥greased ~haft
with Spring pid(Rg. 71, 7?)iD~0 the'~9(e>:Of~p~9rT1:kol<e(Rg.69)
~'P Yo~~Fig.59,'60) Insuch a waytp~t m.a:~p.nr:1g ~1~~ntersth,e.grogY;~ln!heh?le.,
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~.' '1;' ,d i, !Giq nf-!j-.)h~ t"LJJjn~-; ';~;.
(b) Wind
lo
.
ad
.
ch
.
aJ
.
on
.
O
.
n Id
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I
.
e
. .
Shea
.
ve (Rg
.
.
61) for TaP'
.
YOk
.
e with
.
.'
'llie W
.
'
elded
.
P
..
art of load
<tJ§u
.
n
tum~i,!~ap(t\Vindi lo~d .c,hairy,,?P ..I91e .~~~av~~f8.Q~_,7Q) fqr ,~Q'!9Ot¥R.I5~~~ ~elae~'Part
ofloadctialntumedinsldeouttha~,'t)$il,ot~~~~.~,.;.=
:,~ '",.. ","') 01 ',{iL:1W~F.Nbt'd: 1,"";'"