Harrington NTH User manual

EFFECTIVE: FEBRUARY1,1990
,_/
PRODUCTINFORMATION
for
:.. HARRINGTON
NAVY
TROLLEY HOIST
1,2,3,5TONCAPACllY
MODEL:NTH
~
"
CONTENTS:
1.Op~ratingandMaintenanceInstructions
2.PartsUst
3.ChainingInstructions
4.InspectionStandards
5.Disassembling&AssemblingInstructions
6. Trouble Shooting' ,<'
HARRINGTONHOISTS
HARRINGTON
HARRINGTONC~ES
""
Ii1\RRINGTONHOISTS,INC~ '"'~" ,,",
401 WEST END~AVENUE '><;-. .': '>"
MANHEtM,PA"'~7545 ' ,'".,~.,
r;, ':l' iP.HONE: (717) 6~gOOO "
.,-..J ,TOll FREE:'1-8OD-233-3010
.._.'-:..,:':;-~:-F-AX:.[phone] '
;;: '0 "!'-o'

OperatingInstructions
Peerless NTH
ManualChainHoist
BeforeUse
Applylubricant(gearoilormachineoil)totheload
chain.Wipeoffexcess. Thisleaveslubricantatthe
bearingpointsofthelinks.
Operation
Themechanicalactionnecessarytolifttheloadis
startedbypullingonthehandchain.
Itisnormaltohearaclickingsoundwhentheload
israised,butwhenitislowered,noclicking
soundshouldbeheard.
Caution
Donotoverloadthehoist.Overloadingmayshorten
thelifeoftheunitorcauseaccidents.
Whenthehandchainsuddenlybecomestaut,STOP
OPERATION...theliftchainhasreachedeitherits
upperorlowerlimit.
Maintenance
Keephoistfreeofdirtandmoisture.Oilthehoist
periodically-especiallyifithasbeenusedinthe
rain. --
AJways-keeptheloadchainIjghtlylubricated.
Avoiddraggingthehoistontheground.
~
~
.- I I
y- t, [--i--I~+-
-:1---
i
0
:\
"
a.UTlON 4.Nooverloading.
1'. NotM6ting. Nocapsizing tor
doubIlI type chains. 2-Slingloadsfromthe
.center of.the hook.
(~
x0X
6. Nooverlifting.No0Yert0WerIng.
~
5Noextreme &!ant
.slinging.
~
3No .directbtridingofa
.load with . load chain.
8Don'tforgetto011the
.loadchainandaD
~R. thebearingpoints
~"\:-, oftopandbottom
hooksafteruse.
/

,~Operating Instructions
Peerless Manual andGeared Trolley
BeforeUse
Thepeerlessmanualtrolleycanbeadjustedinincrementsof1/8"bysimplyin~ertingor
removingadjustingspacerstofitavarietyofbeamflanges.Noadditionalspacersarerequired.
Toadjusttrolley(Fig.1): '
1.Removethestoppinsandslideoffsideplate8andspacersfromthesuspensionshafts.
2.Reinserttheappropriatenumberofinnerspacers for thedesiredflangewidth(Table1).
3.Insertsideplate"8"andexternalspacersandlockintoplacewiththestoppins.
~Installation
Foreasyinstallationthetrolleymaybeputontothe1-8eamflangefromtheopenendofthe
beam.StoppersshouldbeinstalledonbothendsoftheI-beamto.preventthetrolleyfrom
runningoffthebeam.
Ifthetrolleycannotbeinstalledfromtheopenendofthebeamthen:
1)Disconnectsideplate8fromtrolley.Leavehoistattachedtothesuspender (See1above).
CAUTION:Sincehoistandcomponentsareveryheavy,getassistancetoliftandholdhoist
andtrolleypartsinplace.
2)Check for propernumberofspacers. Useequalnumberofspacersoneachsideof
suspendersothatthehoistiscenteredbetweentrolleywheels.Ufthoistontobeam.
(SeeAg.1)
~3) Reinstallsideplate8andremainingspacers. Installstoppins.
4)Checktoseethathoistandtrolleyissecureonbeam.Allpinsareinplaceandkeepersplit
pinsareinstalled. -
5)Movetrolley.Itshouldmovefreely.Ititistootightorloose,adjustasrequiredbygoing
backtoStep1above.
Operation
Moveanunloadedtrolleybypullingontheloadchainofthehoist.
Movealoadedtrolleybypushingthesuspended load.
PrecautionsToBeTakenInOperation
1)Avoidslantpullingofchain.
Itisdangeroustopullthechainslant,withthetrolleyconnectedtothehoist,asthe
trolleyistiltedtoomuchandgivestoomuchstraintothebeam.
-2)Donotlet~etrolleybumpagainststopperatbear1.1orothE7trolleyonthesamebeam.
c. TakesuffiC1entcarenottoletthetrolleybumpagainstastopperattheendofthebeam
orothertrolleyonthesamebeam,asthiswillcausedamagetothetrolleysandthe
beamstopper.: ''L. -
3)Donotletthe'nandchaincatchaload.
Italoadiscaughtbythehandchainasitislowered,theloadedhandchainmaycause
damagetotheside-plate. '
4)Nev~rrT19yetrolleybypullingonthehoisthandchain.
.,i'J
.i~
_
"fl
_/il lihi
.'i' :" ,
.:>~~\iwr~' ..." .~'-
!'IJIalnteQ~_Q~:::' i :;IIJ .".
lubrIcationonthetrolleywheelsisrequired.Theyhaveshielded,pre-:lubricatedballbe~nngs.
~s_i~nally applyoilthroughthesmallholeinthepinionsupportonthegearedtrolley(FIg.3).
,'-.-,nt/,r'J '. \~
.->
--.".r-, --,"-1'" --{',-

Fig 1
a/@)
ñ
×ÒÒÛÎßÜÖËÍÌ×ÒÙÍÐßÝÛÎÍ ñù
ÞÑÔÌÚÑÎÍËÍÐÛÒÍ×ÑÒÍØßÚÌÑËÌÛÎ
ÊñÍÔÑÌÌÛÜÒËÌßÒÜÍÐÔ×ÌóÐ×Ò ,--;
-----
-.J
~
@
_Ol@)
SPLIT PIN
~(.
7
ÍØßÚÌÍÌÑÐÐÛÎÐ×Ò
ßÜÖËÍÌ×ÒÙÍÐßÝÛÎÍù
Table 1
NumberofAdjustingSpacers -"~.. ..J
,,'
--'--~~- ----- !-
lote;) Ì¿µ»ù²ø÷¬»¬¸»²«³¾¢®±²-°¿½»®-±º·²²»®-·¼»¿-
æ±´´·±©-:-.~' ,.' - -
~ample 1+:2
,ILNumber ±² Side Plate ß
Number ±²Í·¼»Ð´¿¬» B
011
Hole
A
BA-B= 1/S"
/
:.i y
Trotley
WMef -
Hand'
-""'-In,;., :°,"".. . "
-:> ..,,":~,.)i(.:,<..:,.I'
C::App.3/S"
.-.,,~ -~-
Fig.3 0.' .
"" ,.'
,-c'-,--',. Í«-°»²¼»®
".': ':° Fig.2
."\" ..:. '.-~'.
"
.,-,...-
-331/4 3'5/8 37/8 41/8 45/8 551/8 51/4 51/2 55/8 ?3(4 661/4 63/8 61/2 7
,WJdth 33/8 .,4
:aD-" ;
1Inner 3+3 4+4 5+5 6+6 7+7 9+9 ---, - - -- - - - -
Outer 12 10 8 6 4 0>
- - - - - - - - - - -
11/2Irtner ---1+1 1+2 4+4 5+6 6+6 6+7 7+8 8+8 8+9 9+9 - - - '--
2Outer ---16 15 10 7 6 5-: 3 2 1 0 - - ,- -
3Inrier ,_., --, 1+1 1+24+4 5+6 6+6 6+7 7+8 8+8 8+99+9 ---
Outer - - -16 15 10 ,7 ,,:6 -.5- '"3," '--:2 -1 0-- - -
5Inner - - - - - - 0+1 1+1 1+2 2-t:3 3+3 4+3 5+46+56+6 7+6 :9+8
Outer -----.- 16 ,15 14 12 11 10 8 654'.0

PARTSLIST
"ol-'n:1'"' I
\qq~i~p'-one assemblytorSTononly.
~t'~(M.o_~l~oJY --0 --- --" ,-- _0-----"--
,..
;',;.' ,:: ,\:
-- .. --, , --- !_-,~,--;
," =p-;' ':,
.""""""'" ok ,-
,-
No. Capacity
Fig. per
No. PartName Hoist 1 2 3 5
.
1SuspenderAssembly 1 50604 ëðêîî 50679 50725
3TopPin 1 CF163010 CF163015
4BottomHookCompleteSet 1M3021A010
16 SafetyLeverAssembly 1 CF071010
7 ChainPin 1 M3041010
8 SlottedNut 1M204901 0
9SplitPin 19009411 .
0BodyA 1CF101010 CF101015
1BodyB 1CF102010 CF102015
2 NamePlate 1 CF800010 CF800020 CF800030 CF800050
3 Frame 1CF1 05010 CF105015
1CF111010 CF111015 CF111050
14 Pinion 1**CF4111010 **CF4111015 fk*CF411105
5BallBearingA(Ag.14 1 9000103
6BallBearingB(Fig.14 1 9000201 9000202 9000300
BallBearingC(FiQ.14 1 9000105 9000106
'riA BallBearingD(Ag.14) 1 9000105 9000106
18 LoadSheave' 1CF116010 CF116015 CF116A050*
19 LoadGear 1CF114010 CF114015 CF116A050*
20 ChainGuide 1CF178010 CF178015
21 Stripper 1 CF162010 CF162015
22 SocketBolttor Body 29091284 9091285
?2A SocketBatttor Body 2 9091282 9091283
:>3 UNut for Body' 49098506
:>4 PawlPin 1CF156005
:>5 UNut for Fig.24 1 9098506
:>6 PawlSpring 1CF158005
7Pawl,:," 1.' CF155005
8SnapRingfor Ag.24 1 9047108
1 CF153010
29, fnctionDisc 1 **M3153020
0.FrictipnPlateB 1CF151010 ,-
,;/"" 1CF152010 - ' "-",, '
31 'RatchetDisc 1 ,CF4152010 ",'" "
,--"..' , '-,
311 8.4f.shirtfffofHatchet Disc 1M3.154020 ' i}:.]:':;i.cY_I,
.' --
-

..CF4'Model only.
~
No. Capacity
Fig. per
I I
No. PartName Hoist 1235
1CF150010
32 FrictionPlateA 2**M3151020
1CF115010 CF115015
3HandWheel 1**CF4115010 **CF4115015
4WheelStopper 1CF159010
5WheelStopperPin 1M2167005
6SplitPinforFig.35 1 9009401
37 WheelCover 1CF171010 CF171015
38 ScrewforAg.37 3CF187005
39 SpringWasherforFig.37 39012709
0TailPin 1CF164010 CF164015
41 SocketBoltforFig.40 ,1 CF181010
2LoadChain FT LCCF010 \LCCF015
43 HandChain FT HCCFO05
4SuspenderAssembly 150622 50679
6ChainPin 1.CF041020 M3041030
47 SlottedNutforAg.46 1M2049010 M2049010
8SplitPinfqrAg.46 1 9009411 900411
9BottomHookCompleteSet 1CF021A020 M3021A030
50 BottomYoke 2CF031020 M3031030
51Bolt 29091274 9091296
52 UNut 29098506 9098508
53 Shaft 1CFO53020 CFO53030
SpringPin 1CFO83020 CF083020
55IdleSheave 1.CF051020 CF051030
6BottomHookAssembly 1CF021020 M3021030
57 SafetyLeverAssembly 1CF071020 CF071030
58 SuspenderAssembly 150727
59 Suspender 150725
60 IdleSheaveBracketLH. 150726-01
61 IdleSheave 1/" CF051030
62Shaft 1CFO53050
63 SpringPin 1CF083020
64Bolt 290931-53 '
65LockNut 2 90985-11.
66 IdleSheaveBracketRH. 1 50726-02
8BbttomHook-CompleteSet 1."-, CF021AQ50 ':.
.--
69 Bottom Yoke ,'". 2", ..'FO31'('jSO'. .
Q-,-- ..'
170 IdleSheave 1CFO510() ,
71Shaft 1CFO?0§01" ,
,"[)0_kf '

No. Capacity
'fig. per
No. Part Name Hoist 1 2 3 5
72 Spring Pin 1CF083020 73 Bolt 29091296
74 U-Nut 2.9098508 75 Bottom Hook Assembly 1M3021050 76 Safety Lever Assembly 1CF071 050

, ,

PLAIN TROLLEY PARTS
~
Geared Trolley Parts ~
Fig. No. 82-94are interchangeable to Geared Trolley Parts
Fig. Parts No. Part Name Per 1 2 35
Hoist
77 Side Plate A Complete Set 150600 50619 50685 50722
79 Track Wheel S Assembly îT3P1102010 T3P1102020 T3P1102O30 T3P1102050 80 Washer 4MS1O4010 MS 104020 MS104030 MS104050 81 Snap Ring 2T3P106010 T3P106020 T3P106O30 T3P106050
82 Side Plate B Complete Set 1 50601 50620 50676 50723
83 Snap Ring 2T3P106010 T3P106020 T3P 106030 T3P106050 84 Washer 4MS1O4010 MS1O4020 MS1O4O30 MS1O4050 85 Track Wheel S Assembly 2T3P1102010 T3P 110202G T3P1102O30 T3P1102050
87 Name Plate 1NTH800010 NTH80oo20 NTH 800030 NTH800050
36 9005212 T3P116010 9005215
88 AdiustinQ Spacer íì óò 50736 90 Lock Nut 29098506 9098506 9098508 9098508
91 Split Pin 2T3P157010 T3P157020 T3P157O30 T3P157050 92 Bolt 29093102 9093104 9093354 9093129
çí Suspension Shaft 250605 50624 50680 50729 94 Shaft Stopper Pin 2T3P156010 T3P156020 T3P156030 T3P156050
Fig. Parts No;' Part Name. Per 1 2 3 5
Hoist
95 Side PlateG Complete Set 1 50675 50721
96 Nut 1T3G259010 97 'Washer ï9012515 98 '-Hand Wheel 1T3G123010
100 Pinion 1T3G121 020 101 Track Wheel G Assembly 2T3G110101C T3G1101020 T3G1101O30 T3G1101050
102 Washer 4MS1O4010 MS1O4020 MS1O4O30 MS1O405O 103 Snap Ring 4T3P106010 T3P106020 T3P 106030 T3P106050
.
O4 Hand Chain Ft. HCCF005

-',
.'.4~. .

ChainInstallationInstructions '-""
AllCaQacities
1.Hanghoistwithcapacityplatefacingyou.Notefiguresonnextpage.
2.Cutloadandhandchaintoproperlengthwithallendlinksinthesameplane.
3.Attach one end of loadchainusinganopen.Iinktolefthandside of factoryinstalled
leaderchain. Besuretheweldedside of linkisawayfromtheloadsheave.
4.Placetheendlinkof handchainflatinapocketontherightsideofthehandwheeland
turnhandwheelcounerclockwise.Whenfirstlinkcomesoutonoppositesideofhand
wheelplaceaconnectinglinkinhandchainandholdinposition.Donotturnortwist
chain.Becarefulnottoturnthehandwheelclockwisetoofaranddroptheleaderchain
outoftheunit.Keeppullinghandchainthroughhoistuntillastlinkofhandchainhangs
inproperlinewithpocketsofhandwheel.Placeconnectinglinkyouareholdingin
lastlinkofhandchain.Besureyoudidnottwisthandchainyouareholding.Joinend
ofchaintoconnectinglinkandchainwillhanginperfectloop.Closeconnectinglinkin
vise.
5.Removethefactoryinstalledleaderandopenlinkfrom theloadchain. '--'"
6.Attachtheendoftheloadchainontherighthandside of theloadwheeltothetailpin.
Becarefulnottotwistthechain.
1TonCapacity
Attachthebottomhookassemblyto.endof'loadch~inonthelefthandsideoftheloadwheel.
SeeFig.1onnextpage.
2.3TonCapacities
Feedtheendoftheloadchainonthelefthandsideoftheloadwheelthroughtheidlerwheelof
..thebottomhookassembly.'Thenattachittothechainpininthetophookassembly.Becareful
nottotwistthechain.SeeAg.2onnextpage.
5TonCapacity
Feedtheendoftheloadchainonthelefthandsideoftheloadwheelthroughtheidlerwheel of
thebottomhookassembly. Thenthroughthelefthandsideoftheidlerwheelofthetophook
assemblyandattachittothechainpininthebottomhookassembly. Becarefulnottotwistthe
chain.SeeFig.3. ~.
.-""4~ -;, ':",;...
..~..:..'... ....
,'::.'} 12

...,""'.
.'"
t
'--l~tG):N
FIG.I
.,
24 j"TO'N-
FIG.2,
~IB,,',~:;Jn;'iC,;!."t-,:L~, I'
,-,"""" -
..\~".t
-13-'
');
-,,..
..,
"" - -"'-':~
.~. :;}ii
t~ tw
,/
.,
,.
"
"5' TON
'.,,. ,.",,',.~':
Fl;G.:3 >
,.-, ;)~~-'r.-
.."-
... -;i'.. "
.; ..'-.,."-.'
,. ~;;(;;::.;: ;!!£1r'r .,
I

ChainInspection
1.Testthehoistunderloadconditiontomakesurechainmovessmoothlythroughthepockets
andchainguides.
2.Makesurethatthechainiscleanandproperlylubricated.
3.Checkforgouges,nicks,weldspatter,corrosion,chemicalattackanddistortedlinks.Replace
chainifithasbeenweakened. Ifchainappearstobestretched,measureaccordingtothe
chartbelow.IfitmeasuresgreaterthantheMaximum'A'dimension,replacethechain.
Besuretomeasurethatsectionofloadchainthatgoesthroughthepocketwheelandchain
guideofidlerwheelsinthecaseofmultifallhoists.
"A" ~.
-(5 (j'::=2 (5~)(3 .,' -) »
Maintenance
1.Loadchainandhandchainsho~ldbekeptclean.Cleanthechainwithanacid-freecleaning
solution. " " ,
..'
2.Lubrication-fori1orJ'nalusecoatloadchainlightlywithmachineoilorgearoil.Underabrasive
conditions, use,~:,g~.lubriCant. '
3.Becertainthatth({h~placementchainisthesamesize,grade,andconstructionastheoriginal
chain. ' .
4.WhenrePlacing;j8adchain,checkforwearonmatin~parts;i.e.pocketwheel,chainguide~
andidlerwheels"andreplaceifnecessary~ThechainmaybreakifitdoesnotfitproperlyIn
thepocketwheeland,Chainguide.Destroyoldloadchain.
,,,: .,';,.,;'1"','-
5.InstallloadchainWiththeweldsawayfromthepocketwheel.Idlerwheelsareexemptfromthis
action.Anchorthe,freeendoftheloadchainasspecified.
,"
. - ,
6.Afterchaininstallation,operatethehoistwithoutload.Iftheoperationiscorrect,thenadda
moderateload.:Rnallytestat125%ofratedcapacity. Personnelandequipmentmustbe
awayfromdangerofafallingload.
7.Inspectandmaintainhoistandloadchainatregularintervals.
.-.4~--.-~
Capacity Size Std."A"Dim. Max."AnDim.
Ton in (mm) Code in (mm) in (mm)
1,2 1/4"' (6.3) LCCFO10 3.26 (82.9) 3.34 (85O)
3,5 9/3Z' (7.1) LCCFO15 3.61 (91.8) 3.71 (94.1)

WARNING:
-0NOToperatehoistoverpersonnelorequipment.
DONOTinstallnewloadchainonabadlywornpocketwheelandchainguide.
DONOTattempttorepairorlengthenloadchain.
DONOTheatloadchain.
DONOTusediscardedloadchainforslingsorforloadcarryingapplications.
DONOTinstalltheloadchainwithanytwists.
DONOTinstallaloadchainwithlengthlongerthanthechaincontainerisallowedtoaccept.
DONOTexposeloadchain,tosharpcorners.o(situationsthatcausetheindividual-linkto
bene
Lubrication
-
~"CF2only.CF4FrictionPlatesaredry.
""-~;"'-' -~ ~,:1iA')<;1 t:".d b;~J(~r:' ;:.»~ .J--
,~;,,,-
-",-":;'(';<', _: t,:-o--;/':;.'
Partstobe Amount of lubrication
lubricated Name of oil lubricatingmethod. Frequency of Lubrication
LoadChain Machineor Lubricatewithbrush. Lubricatewhenthereis
Gearoil nooilonit.
Neckpart Machineor Properamount Onceamonth.
ofhook. Gearoil
Mechanical Machineor .Wipeoffoilwithwaste Whenthehandpull
brakeparts Gearoil Clothafter-applying becomesextremely
*Friction properamountofoil. heavyinlowering
operations.
PlateA.B
RatchetDisc
PawlPin
Screwparts
ofpinion t'
GearParts Cupgrease 1/2T:(50g)=2bz. Onceayear,oraproper -
LoadGear orGear 1T,2T:(70g)=30z. amountoflubrication
Pinion grease 11/2T,3T,51=(1009)=40z. hoistisdisassembled.
Shaftfor Cupgrease Properamount. Onceamonthandwhen
IdleSheave orGear hoistisdisassembled.
grease --
'
--

Inspection Standards BeforeandAfterUse(RoutineInspection)
Inacasewherethehoistisusedfrequently,thefollowinginspectionshouldbemadeona
day-to-daybasis.
InspectionItems
Capacity
indication
Inspection Method
Inspectvisually
UseUmitor
Judgement Standard
Thereshouldbea
clearindicationof
capacity.
Remedial
Measures
Discontinue
usingand
repair.
Functions DoUftingand
loweringoperations Pawlofbrakeshould
clickduringlifting
operations.
jjook(fop/Bottoml
1.Deformation IInspectvisually
ofhook Thereshouldbeno
changeinthe"a"and
"b"dimensionsinthe
figure.(Closeinspection
shouldbemadeatthe
timeofrepair.
2.pamage of IInspectvisually IThereshouldbeno
-hook serious damage. -
3.Bendinthe
IInspectvisually IGap"e"between yoke
,-
neckofhook andtheneckofhook f
.shouldbeeven.
4.Top/Bottom IInspectvisually IThereshouldbeno
yoke abnormalitiesinthem. e
5.Loosened Inspectvisually Thereshouldbeno
rivetornut abnormalitiesinthem.
6.Safetylatch Inspectvisually Itshouldbe/asnormal.
Chain
1.Rust .I Inspectvisually IItshouldnotbeseriously
rusty.
2.BendalTail Inspectvisually Itshould notbeserious1y
Pin bent.
Others
Nuts-,plit-Pn IInspectvisually INonutsshouldbelacking
orloose.

RepairInspection Standards (RegularInspection)
4.Damageof
hook
5.Loosingof
topyoke
Inspectvisually
Inspectvisually
6.loosingof
bottomy.oke Inspectvisually
\,.:)1-- ':;, -Jr-
e
Remedial
Measures
Provide
. capacity
plate
Replaceit
Replaceit
Replaceit
Replacement
ofhook
Replacement
ofhook
I.Safety~~ _: ~~I~~~~'i1!\~I~~~)~~'I ;~.~~Uldo~rate~~o~~ 1
- - o
I
R;
t-ch
r~~~~-~t ~
~-- -'- -- a
----
<"
Damageshouldnotbe
serious.
Rivetshouldnotbe
-loosened -
Noscrewshouldbe
-lacking_of'loosened.'-
UseUmitor
InspectionItems InspectionMethod Judgement Standard
Capacity Inspectvisually Thereshouldbea
indication dearindicationof
capacity
I I
!:joo!s...(rop/Bottom)
1.Deformation IMeasure"a"and"b" Dimensionshouldnot
ofhook dimensionsinthe exceed10%of"a"
figurebelow. and"b"dimensions
whennew.
2.Wearofhook
IMeasure"c"and"d" Wearshouldnot
part dimensionsinfigure exceed5%morethan
below themeasurementwhen
new
3.Gapbetween Measure"e" Gapshouldnotbe
hookand dimensioninthefigure largerthan.020in.
BottomHook below (.5mm)ofthe
measurement atthe
timeofpurchase.
:.:..] ---- ---

.-.4~ ""(~~:'f"'
,--", -- ----'..- 18;
UseUmitor Remedial
InspectionItems Inspection Method JudgementStandard -Measures
Chain
1.Wear, Inspectvisually Seechartonpage15 Replacechain
deformation .
2.Rust Inspectvisually Thereshouldbeno Removerust
seriousrust
3.Connecting Measureholeinthe Deformationshould Replace
partofyoke connectionpartin notbesoserious relatedparts
withloadchain twodirectionspt thatthereisa
atrightangle. differenceofO.5mm .
ormorebetweenthe
measuredvalue.'
4.Tailpin Inspectvisually Thereshouldbeno Replaceit
largebend.
Functions
1.Uftingand Liftalightload Uftingandlowering Disassemble
lowering operationscanbe andrepair.
donesmoothlywithout
anyofthefollowing
beingcaused.
2.Braking *Noriftingoperation
canbemade
*Loadfallsifyourhand
- - isletgo from thehand
chain.
,---" *Loadfallsinalowering
operation.
*Loadsfipsslowly.
Internal .
Construction' ."
Brakeparts
1.Damagaof Inspectvisually Thereshouldbeno Replace
brakesurface scratch orcut.
",','
2.Damageof Inspectvisually Thereshouldbeno Replace
frictiondisc scratch orcut.
','
3.Wearof Measurewithslide Thicknessshouldbeeven, Replace
frictionplate calipers andwearshouldnot
;"(I:,>,.>,:>:' 1"-, '."""0 -',(:"'- ,,;,,-, exceed \()Oin.J'(O5mm).
-";:;,-"1'"

"
,~
-:FI~", 'II-_"'i~ ~~.j;T_;~;k't' ~j:lic~' ',,'J L..-, -::..I«IY>;~:,;";<:""~ ,':'. -'~,
.-,-<~, -~ -
IUseUmitor Remedial
-InspectionItems InspectionMethod Judgement Standard Measures
-
4.Centerof Inspectgapwiththe Gapshouldbeeven Replace
brakesurface useofstraightedge. centerpartshouldnotbe
ishigherthan higherthantheedgepart.
theedgeparts
5.Wear,rustof Inspectvisually Pawlshouldnotbewornso Replace
pawl muchthatitstipisnot
smoothandthePawlshould
notberusted.
Gear .
1.Deformationor Inspectvisually Itshouldnotscratchframe Replace
damageofload orbody.Teethshouldnot
sheave bedeformed.
2.Wearordamage Inspectvisually Gearteethshouldnotbe Replace
ofgear corrugatedordamaged.
3.Wearor Inspectvisually Teethshouldnotbe Replace
deformation flattenedordeformed.
ofHandWheel Turnitandmakesure
Or' thatitdoes notswing.
Others
,
1.Damageor Inspectvisually Itshouldnotbedamaged Replace
deformation wornordeformed.
ofChainGuide
2.Deformation Inspectvisually lipofStrippershouldnot Replace
ofStripper beseriouslyflattenedor
damaged.

TroubleShooting
A.BrokenChain
1.Trouble:Loadchainisbrokennearitsend.
Crosslinkbent.
Tailpinbentordeformed.
Cause
Loadchainloweredexcessively. ExplanationofCause.
Loweringwithoutnoticingthatthereisno
chainremaining.
Whenchainisfullylowered,theforceon
handchainsuddenlybecomes heavierwhen
theendofchainrunsagainsttheguideroller.
Additionalloweringresultsinabentorbroken
link.
----, Remed~Payattentiontoloadchainduringoperation.
Uponfeelingasuddenresistance,stopoperation.
Duringloweringoperation,fromtimetotimechecktoseeifthereisidle
chainremaining.
2.Trouble:Longerportionofbrokenchainhasbeenrolledonloadsheave.
Loadsheaveisunusuallydeformed.
Unusualflawortwistremainsinlinksadjacenttobrokenlink.
Guiderollerisunusuatlydeformed.
Cause
Loadchaintwisted. ExplanationofCause
Whenloadchain-isliftedwithatwist,thetwist
becomestighteras,chainisJiftedanditisrolled
ontoloadsheave. Furtherliftingwill
finallycausechaintobreak.
Remed~ Jerkhand~ain by2-or3peopletoloosenscrew.Intheeventthatthe
screwisfUsted,disassembleandreplacedefectivepartsincludingscrew.
,- -
3.Trouble:"Theinstantloweringoperationisstarted,theloadcomesdown.
Cause
Largeamountofforeignmatter
inthebrakeassembly.
Improperassemblyof
brake.
ExplanationofCause
Improperassemblyofbrakesystem.
<"
Frictionplatesshouldbeinsertedonbothsides
ofratchetdisc,however,plateswereinsertedon
onlyoneside,oroneplatewasleftout.
Itoccurswhenthefrictionplatestucktotheratchet
disc.
Brakesurfacesare
oiledexcessively.
Remedy:DisassembleandreplacedefectiveFrictionPlate
.~.-<~-~-"--