Caterpillar 303C 303CR Mini Hydraulic Excavator (S3Q2 Engine) Parts Manual – PDF DOWNLOAD
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Cat 303C 303CR Mini Hydraulic Excavator (S3Q2 Engine) Parts Manual – PDF DOWNLOAD
Cat 303C 303CR Mini Hydraulic Excavator (S3Q2 Engine) Parts Manual – PDF DOWNLOAD
DESCRIPTION:
Cat 303C 303CR Mini Hydraulic Excavator (S3Q2 Engine) Parts Manual – PDF DOWNLOAD
SERIAL NUMBERS:
AZS02501-Up [Machine]
1. MACHINE IDENTIFICATION :
Caterpillar machines are identified by Product Identification Numbers (PIN). Some components included in a machine may be identified by Serial Numbers (S/N). Typical components that will be serialized include engines, transmissions, bulldozers, and rippers. The machine and engine are further identified by arrangement numbers and in some cases modification numbers.
- These numbers are shown on the product identification plate(s) and on the master plate in the operator’s compartment. Caterpillar dealers need all of these numbers to determine accurate parts identification. Effective First Quarter 2001 the Caterpillar Product Identification Number (PIN) changed from 8 to 17 characters.
- In an effort to provide uniform equipment identification, Caterpillar and other construction equipment manufacturers are moving to comply with the latest version of the product identification numbering standard. Non-road machine PINs are defined by ISO 10261. The new PIN format will apply to all Caterpillar machines and generator sets.
The PIN plates and frame marking will display the 17 character PIN. The new format will look like the following:
Where:
1. Caterpillar’s World Manufacturing Code (characters
1-3)
2. Machine Descriptor (characters 4-8)
3. Check Character (character 9)
4. Machine Indicator Section (MIS) or Product Sequence
Number (characters 10-17). These were previously
referred to as the Serial Number.
Machines and generator sets produced before First Quarter 2001 will maintain their 8 character PIN format. Components such as engines, transmissions, axles, etc. and work tools will continue to use an 8 character Serial Number (S/N).
- Quality Caterpillar replacement parts are available from Caterpillar dealers throughout the world. Their parts inventories are up to date and include all parts normally required to protect your investment in Caterpillar machines.
- Dealers may offer repair kits or remanufactured parts to allow selection of the most effective repair alternative for a particular situation. When ordering parts, your order should specify the quantity, part number, part name, and the serial number/product identification number of the machine for which the parts are needed.
- Product information in this manual is presented as “information elements” that represent all of the components for the specific model. Engine Arrangement and Seat Group are examples of information elements.
- The information elements are organized alphabetically by part name and secondarily by part number within each major section of the manual.
TABLE OF CONTENTS:
Cat 303C 303CR Mini Hydraulic Excavator (S3Q2 Engine) Parts Manual – PDF DOWNLOAD
AIR CLEANER GROUP 46
AIR CONDITIONER GROUP 469,471
AIR CONDITIONER LINES GROUP 478～483
AIR DUCT GROUP 472～473
AIR LINES GROUP 45
ASSIST HANDLE GROUP 401
AUXILIARY CONTROL ARRANGEMENT 198
AUXILIARY HYDRAULIC LINES GROUP 324～326
B
BALL VALVE ASSEMBLY 336
BATTERY AND WIRING GROUP 74～81
BEARING AND GEAR GROUP 182
BLADE AND MOUNTING GROUP 389～391
BLADE ARRANGEMENT 355～357
BLADE CONTROL GROUP 233～235
BLOCK ASSEMBLY 215～231
BOOM ARRANGEMENT 350
BOOM CYLINDER GUARD GROUP 363
BOOM GROUP 361
BOTTOM GUARD GROUP 164
BUCKET ARRANGEMENT 375
BUCKET GROUP 382～385
BUCKET LINES GROUP 333～334
BUCKET LINKAGE ARRANGEMENT 354
BUCKET LINKAGE GROUP 372～374
C
C-FRAME GROUP 393
CAB ARRANGEMENT 398～399
CAB GROUP 408～413
CAB LIGHTING GROUP 131
CAMSHAFT GROUP 25
CANOPY ARRANGEMENT 396～397
CANOPY GROUP 402～407
CARRIER ROLLER GROUP 187
CHARGING ALTERNATOR GROUP 128
CHASSIS ARRANGEMENT 155
CIRCUIT BREAKER PANEL GROUP 120～123
COMMON ARRANGEMENT 1
CONDENSER AND MOUNTING GROUP 463
CONNECTOR GROUP 142
CONSOLE GROUP 441～443
CONSOLE WIRING GROUP 82～99
CONTROL ARRANGEMENT 197,200,451
COUNTERWEIGHT ARRANGEMENT 172
COUNTERWEIGHT COVER GROUP 175～176
COUNTERWEIGHT GROUP 173～174
COVER ASSEMBLY 163
COVER GROUP 161～162,420～421
CRANKSHAFT ASSEMBLY 23
NAME PAGE
CRANKSHAFT GROUP 22
CRANKSHAFT PULLEY GROUP 24
CYLINDER BLOCK ASSEMBLY 20
CYLINDER BLOCK GROUP 19
CYLINDER GROUP 338～346
CYLINDER GUARD GROUP 362,365
CYLINDER HEAD ASSEMBLY 28
CYLINDER HEAD GROUP 27
CYLINDER LINES GROUP 327～331
CYLINDER STOP GROUP 375
D
DRAIN GROUP 336
E
ELECTRIC HORN GROUP 458
ELECTRIC STARTING MOTOR GROUP 73
ELECTRONIC CONTROL GROUP 501
ELECTRONICS GROUP 501
ENGINE ARRANGEMENT 16～17
ENGINE MOUNTING GROUP 32～33
ENGINE OIL COOLER GROUP 44
ENGINE OIL DRAIN GROUP 36
ENGINE OIL FILLER GROUP 35
ENGINE OIL FILTER AND MOUNTING GROUP 35
ENGINE OIL PUMP GROUP 34
EXHAUST EXTENSION GROUP 52
EXHAUST MANIFOLD GROUP 50
EXTENSION GROUP 53
F
FAN GUARD GROUP 39～40
FASTENER GROUP 376
FENDER COVER GROUP 165
FENDER GROUP 166
FILM GROUP 502～536
FINAL DRIVE GROUP 146～147
FIREWALL GROUP 170
FLOOD LAMP GROUP 135
FLYWHEEL GROUP 31
FOOTREST GROUP 452
FRAME ASSEMBLY 444
FRONT GEAR GROUP 31
FRONT GUARD GROUP 453～457
FRONT HOUSING GROUP 30
FRONT IDLER GROUP 183～185
FRONT LINES GROUP 267～283
FRONT WIRING GROUP 109～111
FUEL FILTER GROUP 71
FUEL FILTER LINES GROUP 68～69
FUEL INJECTION LINES GROUP 67
FUEL INJECTION PUMP GROUP 66
INDEX
NAME PAGE
FUEL TANK AND MOUNTING GROUP 72
G
GLOW PLUG GROUP 129
GOVERNOR CONTROL ARRANGEMENT 55～57
GOVERNOR CONTROL GROUP 58～65
GRAPPLE GROUP 386～388
GREASE LINES GROUP 177
GUARD ARRANGEMENT 360
H
HAMMER ARRANGEMENT 358
HEATER AND MOUNTING GROUP 470
HEATER GROUP 469
HEATER LINES GROUP 474～477
HOOD AND GUARD GROUP 156～159
HOOD GROUP 160
HYDRAULIC ARRANGEMENT 196
HYDRAULIC HAMMER GROUP 394～395
HYDRAULIC MOTOR GROUP 151
HYDRAULIC TANK AND FILTER GROUP 206～207
HYDRAULIC TANK AND MOUNTING GROUP 196
I
INLET MANIFOLD GROUP 51
INSTALLATION ARRANGEMENT 18
J
JUMPER LINES GROUP 335
K
KNOB ASSEMBLY 245
L
LEVER GROUP 445
LIGHTING GROUP 130～134,136～139
LINES GUARD GROUP 364
LINK GROUP 419
LITERATURE GROUP 537
M
MANIFOLD VALVE GROUP 318
MECHANICAL SHUTOFF GROUP 70
MONITOR AND MOUNTING GROUP 434～439
MOTOR AND MOUNTING GROUP 145,149
MUFFLER GROUP 54
O
OFFSET CONTROL GROUP 242
OIL PAN GROUP 24
OPERATOR ARRANGEMENT 399
OPERATOR CONSOLE GROUP 440
NAME PAGE
OPERATOR PLATFORM GROUP 422～429
P
PILOT LINES GROUP 286～297,299～317
PILOT OPERATED HYDRAULIC CONTROL GROUP 239,243～244
PILOT VALVE GROUP 236～238,240～241,250～253,319
PISTON PUMP GROUP 202～205
PLATE ASSEMBLY 171
PLATFORM ASSEMBLY 430～433
POWER TAKE OFF CONTROL GROUP 231～232
POWER TRAIN ARRANGEMENT 144
PUMP AND MOUNTING GROUP 201
PUMP LINES GROUP 284～285
Q
QUICK COUPLER GROUP 377～381
R
RADIATOR GROUP 41～43
REAR VIEW MIRROR GROUP 446
REDUCTION GEAR GROUP 148,154
REFRIGERANT COMPRESSOR GROUP 468
RELIEF VALVE GROUP 153
RETURN LINES GROUP 322～323
ROD AND PISTON GROUP 21
RUBBER PAD GROUP 194
S
SEAT BELT GROUP 458
SEAT GROUP 459
SEAT SUPPORT GROUP 461～462
SENSOR AND MOUNTING GROUP 141
SHUTOFF VALVE ARRANGEMENT 199
SLIDE DOOR GROUP 414～415
SOLENOID VALVE GROUP 320
SPECIAL ARRANGEMENT 2～15,484
SPROCKET GROUP 150
STARTING MOTOR FASTENER GROUP 73
STICK ARRANGEMENT 350
STICK GROUP 366～371
STICK LINES GROUP 332
STRAIGHT BLADE GROUP 392
SUCTION FAN GROUP 38
SWING CYLINDER LINES GROUP 266
SWING DRIVE GROUP 150
SWING FRAME GROUP 169
SWING MOTOR LINES GROUP 258～265
SWIVEL GROUP 337
T
TOOL GROUP 537～538
TRACK AND CARRIER ROLLER ARRANGEMENT 186
INDEX
NAME PAGE
TRACK ARRANGEMENT 191
TRACK ASSEMBLY 193
TRACK GROUP 188,192～193
TRACK GUIDE GUARD GROUP 195
TRACK LINK ASSEMBLY 194
TRACK MOTOR LINES GROUP 254～257
TRACK ROLLER GROUP 187
TRAVEL ALARM GROUP 347～348
TRAVEL AND CONTROL GROUP 248
U
UNDERCARRIAGE ARRANGEMENT 178
UNDERCARRIAGE FRAME ASSEMBLY 180～181
UNDERCARRIAGE FRAME GROUP 179
UPPER FRAME ASSEMBLY 168
UPPER FRAME GROUP 167
V
VALVE AND MOUNTING GROUP 208～211
VALVE CONTROL GROUP 246～247
VALVE GROUP 152,212～214,321
VALVE MECHANISM COVER GROUP 26
VALVE MECHANISM GROUP 29
W
WASHER BOTTLE WIRING GROUP 466～467
WATER PUMP ASSEMBLY 38
WATER PUMP GROUP 37
WINDOW GUARD GROUP 400
WINDSHIELD GROUP 416
WINDSHIELD WASHER GROUP 464～465
WIRING GROUP 112～116,486～499
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