Model 843 Skid Steer Loader Parts Catalog
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6570384 (7-00) Revised (5-07)
Parts
Manual
S/N 503724001 & Above
-~~
Printed in U.S.A. © Bobcat Company 2007
GENERAL INFORMATION
Before ordering parts, ALWAYS provide dealer with your product model
number and complete serial number information. Before ordering parts, verify
correct part numbers and/or serial numbers with your dealer. When using the
machine serial number, use the complete number.
Some serial number breaks are not available at time of printing.
These are listed as & Bel or & Abv or - (thru)
The number shown in the quantity column in this manual is the number of
parts needed for the illustration on the page. For some parts an "x" will be
shown in the quantity column. This "x" indicates that the quantity to be used
is "As Needed".
When references L.H. (Left Hand) and R.H. (Right Hand) are used in this
manual, it is done from the operator's seat in the forward operating position.
When "See Illustration .... " appears in the remarks column, refer to the
contents page for the illustration title to find page number location.
Some of the illustrations and information found in this parts manual were
supplied to Bobcat by machine component companies.
For additional information on the Bobcat website visit www.bobcat.com
ABBREVIATIONS
SALES = Order from Gwinner Sales Department
NSS = Not Serviced Separately
NAP =Not Available as Parts
BTI = Bobcat Technical Information Bulletin
O/M = Operation & Maintenance Manual
S/M = Service Manual
AHC = Advanced Hand Controls
ACS = Advanced Control System
SJC = Selectable Joystick Controls
P/M = Parts Manual
S/L = Service Letter
WI =With
W JO= Without
l.D. = Inside Diameter
O.D.= Outside Diameter
" =Inches
=Feet
mm = Millimeters
TRANSLATION KITS & DECAL KITS
AR= Argentina (Spanish) BR= Brazil (Portugese) JP= Japanese
(Translation Kit includes Safety Manual, Operators Manual & Decal Kit)
[A] =
[B] =
[C] =
[D] =
DISPOSITION
(Found in the Remarks Column)
Use Up
Use Up on Other Applications
File PDR Report with Bobcat Parts Sales
Part Number Error
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NOTE D'INFORMATION
Pour toute reference au numero de serie de l'engin, toujours donner le numero com-
plet.
Le chiffre apparaissant dans la colonne des quantites de ce manuel representent le
nombre de pieces necessaires pour !'illustration reprise sur la page. Dans certains
cas, on lira un "x" dans la colonne des quantites. Cet "x" indique que la quantite ne-
cessaire est "selon besoin".
Pourtoute referencevers la GAUCHE ou la DROITE dans ce manuel, considererque
la personne se trouve assise dans le siege de l'operateur, en position de fonctionne-
ment en marche avant.
Certaines illustrations et informations reprises dans ce manuel de pieces de re-
change ont ete fournies a Bobcat/Ingersoll-Rand par des fabricants de composants.
SALES
NSS
NAP
*
BTI
was 6535403
adj. (adjustment)
Assembly
available W/Ref.
bulk/sold per foot
does not include
included with
1.D.
O.D.
not in kit
W/-WO/
Qty
see page/ref.
used with ref/
ABREVIATIONS & SYMBOLES
= Commander au Service Ventes a Bruxelles
= Pas vendu separement
= Non disponible comme piece de rechange
= Chapitre, page ou numero de piece modifie ou supplementaire
=Bobcat Technical Information Bulletin: voir a la fin de la microfiche
du modele concerne ou la microfiche generale reprenant I'
ensemble des "BTI".
= etait avant 6535403
= reglage
=ensemble
= disponible avec ref.
= en vrac/vendu par pied
= ne comprend pas
= compris dans
= D.I. (diametre interieur)
= D.E. (diametre exterieur)
=pas en kit
= inclus/ - non inclus/
= quantite requise
= voir page/ref.
=utilise avec ref.
0,05 inch thickness = 0,05 pouce d'epaisseur (un pouce = 25.4 mm)
=a souder weld on
iii
ALLGEMEINE INFORMATIONEN
Bei Angabe der Maschinen-Seriennummer stets die komplette Nummer angeben.
Bei der in der Mengenspalte (Anzahl) in diesem Handbuch angegebenen Zahl hand-
elt es sich um die Anzahl von Teilen, die fur die Abbildung auf der betreffenden Seite
ben6tigt werden. Bei manchen Teilen in der Mengenspalte ist ein "x" angegeben.
Dieses "x" weist darauf hin, dass sich die Anzahl der verwendeten Tei le auf den "Be-
darf" bezieht.
Bei Verwendung der Seitenangaben links und rechts in diesem Handbuch gelten
diese tor die Blickrichtung vom Fahrersitz aus, und zwar in Vorwarts-Betriebsrich-
tung.
Einige der in diesem Ersatzteilhandbuch aufgetuhrten Abbildungen und lnformatio-
nen wurden der Bobcat/Ingersoll-Rand von den Herstellern von Maschinenbauteilen
zur Verfugung gestellt.
ABKURZUNGEN UNO SYMBOLE
SALES
NSS
NAP
*
BTI
was 6535403
adj.
Assembly
available W /Ref.
bulk/sold per foot
does not include
included with
l.D.
O.D.
not in kit
WJ-WOJ
Qty
see page/ref.
used with ref.
0.05 inch thickness
weld on
= Bestellung bei der Verkaufsabteilung in Brussel
= Nicht einzeln erhaltlich
= Nicht als Ersatzteil erhaltlich
= Geanderte oder hinzugetugte Abschnitte, Seiten oder
Teilenummern
= Bobcat Technical Information Bulletin : Siehe am Ende der
Mikrokarte des jeweiligen Modells oder der allgemeinen
Mikrokarte der BTI.
= War 6535403
= Einstellung
= Baugruppe
= erhaltlich mit der Referenz
= Mengenabnahme I Verkauf pro Fuss
= beinhaltet nicht
= enthalten in
= lnnendurchmesser
= Aussendurchmesser
= nicht in Bausatz
= mit/ - ohne/
= Anzahl
= Siehe Seite I Referenz
= verwendet mit Referenz
= Dicke : 0.05 Zoll (ein Zoll = 25.4 mm)
= anschweissen
iv
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INFORMAZIONI GENERALI
Quando si usa ii numero di serie della macchina usare ii numero completo.
II numero mostrato nella colonna della quantita di questo manuale corrisponde al
numero di componenti necessari per l'illustrazione della pagina. Per alcuni compo-
nenti appare "X" nella colonna delle quantita. Questa "X" indica che la quantita da
usare e "come necessario".
See in questo manuale si fa riferimento alla parte destra o sinistra, si intende dal se-
dile dell'operatore nella posizione in avanti di funzionamento.
Alcune delle illustrazioni e informazioni trovate in questo manuale di componenti
sono state fornite alla Bobcat/Ingersoll-Rand da societa di componenti di macchine.
SALES
NSS
NAP
*
BTI
was 6535403
adj. (adjustment)
Assembly
available W/Ref.
bulk/sold per foot
does not include
Included with
l.D.
O.D.
not in kit
WI-WO/
Qty
see page/ref
used with ref.
0,05 inch thickness
weld.on
SIMBOLI E ABBREVIAZIONI
= Ordinare al servizio vendite di Bruxelles
= Non vendute separatamente
= Non disponibile come componente
= Sezioni, pagine o numeri di componente cambiati o aggiunti
= (Bobcat Technical information) Ved. al termine del microfiche
del modello relativo oppure microfiche generale
= era 6535403
= regal. (regolazione)
= Complessivo
= disponibile con rif.
= alla rinfusa/venduto al piede
= non comprende
= compreso con
= d. i.
= d. e.
= non fa parte del kit
=con - senza
=Ota
= ved. pagina/rif.
= usato con ii rif.
= spessore 0,05 pollici (un pollice = 25,4 mm)
=a saldare
v
INFORMACION GENERAL
Al utilizar el numero de serie de la maquina, debe emplearse el numero completo.
El numero que figura en la columna de "Unidades" en este manual es el numero de
piezas que se necesitan para la ilustraci6n que consta en la pagina. En algunas pie-
zas aparece una "x" en la columna de "Unidades". Esta "x" indica que las unidades a
utilizar son "segun sea necesario".
Cu an dose empleen las referencias izq. y dcha., estas se entienden mirando desde el
asiento del conductor, en posici6n de marcha adelante.
Algunas de las ilustraciones y la informaci6n que figuran en este manual de piezas
han sido facilitadas a Bobcat/Ingersoll-Rand por empresas de componentes de
maquinas.
ABREVIATURAS Y SIMBOLOS
VENTAS
NSS
NAP
*
BTI
was 6535403
adj. (adjustment)
assembly
available W/Ref.
bulk/sold per foot
does not include
included with
l.D.
O.D.
not in kit
WI-WO/
Qty
see page /ref.
used with ref.
0,05 inch thickness
weld on
= Pedido al Departamento de Ventas de Bruselas
= No se vende por separado
= No disponible como pieza de repuesto
= Secciones, paginas o referencias modificadas o anadidas
= (Bobcat Tecnical Information) Ver al final de la microficha
del modelo afectado o en la microficha general "Boletfn de
lnformaci6n Tecnica Bobcat".
= era anteriormente el 6535403
= ajuste
= conjunto
= disponible con la ref.
= a granel/vendido por pies
=no incluye
= incluido en
= diametro interior
= diametro exterior
=no en el kit
=con/ - sin
= Unidades
= ver pagina/ref.
= empleado con la ref.
= 0,05 pulgadas de espesor (1 pulgada = 25,4 mm)
= debe ser soldado
vi
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ALGEMENE INFORMATIE
Als u het serienummer van de machine gebruikt, geef dan het gehele serienummer.
Het cijfer dat voorkomt in de kolom "Aantal", in deze handleiding, is het aantal onder-
delen dat nodig is van de illustratie op de pagina. Voor sommige onderdelen staat er
een "x" in de kolom "Aantal". Deze "x" betekent dater een aantal "zoals nodig" vereist
is.
Wanneer er in deze handleiding naar "links" en naar "rechts" gerefereerd wordt, moet
dit verstaan worden voor een bestuurder die in de bestuurdersstoel zit in de voor-
waartse bedrijfsstand.
Sommige van de illustraties en informatie in deze onderdelen-handleiding werden
door firma's van machine-componenten geleverd aan Bobcat/Ingersoll-Rand.
AFKORTINGEN EN SYMBOLEN
SALES
NSS
NAP
*
BTI
was 6535403
adj. (adjustment)
Assembly
available W/Ref.
bulk/sold per foot
does not include
includes with
l.D.
O.D.
not in kit
WI-WO/
Qty
see page/ref.
used with ref/
0,05 inch thickness
weld on
= Bestellen bij de Verkoopafdeling te Brussel
= Niet afzonderlijk te verkrijgen
= Niet beschikbaar als onderdeel
= Gewijzigde of toegevoegde paragrafen, pagina's of
onderdeelnummers
= Bobcat Technical Information Bulletin : Zie einde van de
microfiche van het desbetreffende model of einde van de
algemene microfiche die het geheel van alle "BTI" herneemt.
= was vroeger 6535403
= afstelling
= geheel
= beschikbaar met ref.
= bulk/aan de meter verkocht
= bevat niet
=is bevat in
= <I> inw. (inwendige diameter)
= <I> uitw. (uitwendige diameter)
= niet in de kit
= met/ - zonder/
= vereiste aantal
= zie pagina/ref.
= gebruikt met ref.
= 0.05 inch dik (een inch = 25.4 mm)
= te !assen
vii
CONTENTS
MAINTENANCE ITEMS ..................................................................................................................... 1-2
MAINTENANCE ITEMS .. ..... .. . .. ...... .... ..... .. ........ .. ...... .. ... .... .. . .. ... . .. .. .. .. . .. ... .. .. . .. ... .. .. .. ... .. .. .. ... .. .......... .... .. .. . .. ... .. 1
MAIN FRAME ..................................................................................................................................... 3-20
PANELS .................................................................................................................................................. 11
FUEL SYSTEM .................................................................................................................................................. 13
BOB-TACH .................................................................................................................................................. 15
SEAT .................................................................................................................................................. 17-20
MAIN FRAME .................................................................................................................................................. 3
LIFT ARMS & BOBTACH ................................................................................................................................... 5
OPERATOR CAB ... . .. .. ..... .. . .. .. ... .. .. .. . ... ... .. .. .. ............. .. . .. . ... .. . .. . .. . .. .. .. .. .. .. .... .. ... ... .. .. .. . .. .. .. .. . .. .. .. . ... .. ... ... . .. .. .. .. .. . 7
SEAT & SEAT BAR............................................................................................................................................ 9
DRIVE TRAIN ....................................................... .................................... .............. ............................ 21-28
DRIVE TRAIN .................................................................................................................................................. 21
GEARCASE .................................................................................................................................................. 23
DISC BRAKES ... .... .... ... .. .. .. . .. ... .. .. .. . .. . .. . ... .. .. ..... ... ... ... . .. . .. . .. .. ... .... .. .. .. ... .. .. . .. .. . .. ... .. .. .. . .. .... .. ... ... .. ... ... ..... .. ... .. ... 25
AXLE .................................................................................................................................................. 27
HYDRAULIC SYSTEM ....................................................................................................................... 29-48
HYDRAULIC CIRCUITRY .................................................................................................................................. 29-32
AUXILIARY HYDRAULICS ................................................................................................................................ 33
CONTROL PEDALS . .. .. ... .. .. . .. ........... .... .. .. .. ... .. .. ... .. . .. . .. . .. .... .. .. . .. . .. .. ... .. .. . .. .. .. . .. ... .. .. ... .. .. .. ... .. . ... .. .. ... ... . .. .. ........ 35
LIFT CYLINDER ................................................................................................................................................. 37
TILT CYLINDER .. . ... .. ... .. .. ..... ... .... .. ...... .. . .. .... .. ..... .. . .. . .. ....... .. .. ... . .. . .. .. .. . .. .. .. ... .. ... . .. .. .. .. ..... .. ... .. . .. ... .. .. .. .. ..... .. .. ... 39
CONTROL VAL VE ............................................................................................................................................. 41-44
BUCKET POSITIONING VALVE ....................................................................................................................... 45-48
HYDROSTATIC SYSTEM .................................................................................................................. 49-96
HYDROSTATIC CIRCUITRY ............................................................................................................................. 49-66
HAND CONTROLS ............................................................................................................................................ 67
HAND CONTROLS (LEFT SIDE) ...................................................................................................................... 69-74
HAND CONTROLS (RIGHT SIDE) .................................................................................................................... 71-76
HYDROSTATIC PUMP ...................................................................................................................................... 77-88
GEAR PUMP .................................................................................................................................................. 89
HYDROSTATIC MOTOR . .. .. ... .. ... .. .. .. .... .. .. .. .. ....... ... . .. . .. ... ... .. .... .. ... .. .. .. . .. .. ... .. ... . .. .. .. .. ... .... .. ... .. . .. . .. ... ... . .. .. ........ 91
SERVO .................................................................................................................................................. 93
HYDROSTATIC OIL FILTER ............................................................................................................................. 95
ELECTRICAL SYSTEM ..................................................................................................................... 97-112
ENGINE ELECTRICAL ...................................................................................................................................... 103
ALTERNATOR .............................................................................................................................................. 105-108
STARTER .............................................................................................................................................. 109-112
CAB ELECTRICAL SYSTEM ........................................................................................................................... 97-102
POWER UNIT ................................................................................................................................... 113-156
ENGINE & ATTACHING PARTS ................................................................................................................... 113-120
THROTTLE .................................................................................................................................................. 121
UNIVERSAL JOINT ........................................................................................................................................... 123
ENGINE .................................................................................................................................................. 125
MANIFOLDS .................................................................................................................................................. 127
CYLINDER HEAD & COVER ............................................................................................................................. 129
CAMSHAFT & TIMING GEAR ........................................................................................................................... 131
CYLINDER BLOCK & OIL PAN ......................................................................................................................... 133
PISTON & CRANKSHAFT .... ... .. . .. .. .. ... ... .. .. .. .. ... .. ...... ... ... ... .. .. ....... .. ........... ..... ........ .. ..... .. .. .. ... ..... ... .. .... ....... .. ... 135
ENGINE OIL FILTER ......................................................................................................................................... 137
OIL PUMP .................................................................................................................................................. 139
THERMOSTAT HOUSING ................................................................................................................................ 141
Model 843
6570384
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CONTENTS (Cont'd)
POWER UNIT
WATER PUMP .................................................................................................................................................. 143
FUEL INJECTION SYSTEM .......................................................................................................................... 145-148
FUEL FILTER .................................................................................................................................................. 149
AIR CLEANER .............................................................................................................................................. 151-154
GASKET KIT ... ... ....... ..... ... . .. .. ... ... ..... .. .. .. ... ....... ... .. . .. ....... .. .. .. ... .. .. .. .. . .. ... . .. .. . ... .. ........ ..... .. .. .. .. .. .. .. ... .. ... .. ....... 155
ACCESSORIES & OPTIONS ........................................................................................................... 157-308
AIR SEAL/SCREEN KIT ..................................................................................................................................... 157
BACK-UP ALARM KIT ................................................................................................................................... 159-164
BLOCK HEATER ............................................................................................................................................... 165
BUCKET POSITION ON-OFF KIT . .. .. . .. ......... ... .. ... .. .. . .. .. ... .. ... .. .. .. ... .. . ... .. ... . ... ... ... .. .. ..... .. .. ... .... ..... ... . .. .. .... .. . .. .. . 167
CAB ENCLOSURE ......................................................................................................................................... 169-188
CAB DOOR .............................................................................................................................................. 171-178
CAB WINDOWS ................................................................................................................................................ 179
REAR WINDOWS .............................................................................................................................................. 181
REAR WINDOW KIT ......................................................................................................................................... 183
CLOSED ALTERNA TOR .... ........ ... ... .. ... .. .. .. .. .. .. ....... .... .. . .. ..... .. ..... .. .. .. ... .. .. . .. . .. ... ... ... .. .. ... .. ... .......... ...... .. ..... ..... 189
DEBRIS SCREEN KIT ....................................................................................................................................... 191
DECALS .............................................................................................................................................. 193-196
DOOR STOP & TOW HITCH ............................................................................................................................ 197
FIRE EXTINGUISHER ....................................................................................................................................... 199
FLASHER LIGHTS ............................................................................................................................................. 201
FUEL FILL EXTENSION .................................................................................................................................... 203
HAND CONTROLS KIT ................................................................................................................................. 205-208
HEATER KIT .............................................................................................................................................. 209-212
HEATER .............................................................................................................................................. 213-216
HEATER PLUMBING KIT .................................................................................................................................. 217
HIGH HORSEPOWER HYDRAULICS .......................................................................................................... 219-248
HORN .................................................................................................................................................. 249
HORN KIT .................................................................................................................................................. 251
HOSE CLAMP KIT . .. . ... .. ..... ... ....... ... .. .. ... .. .. .. .. .. .. .. ... ... ... .. . ... .. ... ...... .. . ... .. ...... .. ... .. . .. ... .. .. . .. .. . .. .. .. .. ... .. . .. ......... .. .. . 253
KEYLESS IGNITION .......................................................................................................................................... 255
LIFT ARM STOP ................................................................................................................................................ 257
OPERA TOR CAB ........................................................................................................................................... 259-262
MUFFLER/PURIFIER KIT .............................................................................................................................. 263-266
RENTAL KIT . .. .. .. ... . .. . ... ... .. . .. .. .. . .. .. ... .. .. .. ... .. . .. ... .. .. ... . ... . .. .. .. ..... .. .. .. .. ... .. . .. .. ... .......... ... .. .. .. ... .. ... .. ... .. .. .. .. ... .. ... 267
SEAT BAR KIT .............................................................................................................................................. 269-274
SEAT BELT 3" .................................................................................................................................................. 275
SINGLE POI NT LIFT KIT ................................................................................................................................... 277
SOUND REDUCTION HARDHAT ..................................................................................................................... 279
SOUND OPTION ............................................................................................................................................... 281
STEERING KIT .. .. .. .. .... ......... .. .. .. .... ....... .. .... .. .. ... ... .. .. . .. .. ... .... .. .. ... .. . ... .. ........... ... .. ...... .... .. ..... .. ..... .. ... .... .. ...... .. .. 283
STROBE LIGHT KIT ... . .. .. .. ... .. .. .. ........ .. ... .... .. .. ... ... ....... .. ........ ... ... ....... .. .. . .. ... .. ..... ... ....... .. ..... .. ... .. .. ... ... . .. ... ... .... 285
SUSPENSION SEAT ..................................................................................................................................... 287-292
TANK HEATER KIT ....................................................................................................................................... 293-296
TIRES & RIMS .............................................................................................................................................. 297-302
UPHOLSTERY KIT ............................................................................................................................................ 303
WATER LEVEL SENSOR KIT . .. .. ..... ... .. ..... ....... .. ... .. ... ....... .. .. .. .. ..... .. ..... .. ... ... .. ... .. ... .. ..... .... ....... ........ .... .. ...... .. . 305
BULK ITEMS .. ..... ...... ....... .. .. .. .. ... .. ... .. ....... .. .. ... ... .. ............ .. ...... ... .. .. .. ... .. ... .. ... . .. .. ... .. .. . .. .. ... .. .. .. ... ... .. .. .. ......... 307
NUMERICAL INDEX ........................................................................................................................ 310-353
Model 843
6570384
Service
Manual
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Manual
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This manual covers all versions of the following machines:
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