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Case CX40B CX50B Hydraulic Excavator Shop Manual PDF Download

Case CX40B CX50B Hydraulic Excavator Shop Manual PDF Download

Name: Case CX40B CX50B Hydraulic Excavator Shop Manual PDF Download
SKU: CASE-CX40B-CX50B-HD-991940
Availability: InStock

Original price was: $44.95.Current price is: $27.95.

Complete Case CX40B and CX50B Hydraulic Excavator Shop Manual (No. 9-91940 GB) covering specifications, hydraulic and electrical systems, disassembly, troubleshooting, and full Yanmar 4TNV88-XYB engine overhaul procedures. Instant PDF download.

SKU: CASE-CX40B-CX50B-HD-991940 Category: Construction Equipment Manuals Tags: Case CX40B Shop Manual, Case CX50B Repair Manual, Case Excavator Service Manual PDF, CX40B CX50B Hydraulic Excavator Manual Vendor: Lift Truck Docs

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Description

Case CX40B CX50B Hydraulic Excavator Shop Manual

This Case CX40B CX50B Hydraulic Excavator Shop Manual (document No. 9-91940 GB) is the factory-style workshop reference built specifically for the CX40B and CX50B compact excavator platform. It is the same shop manual a dealer technician would reach for when specifications, torque values, or a full teardown procedure are needed, and it is delivered as an instant PDF rather than a bound book.

File Details

Manual type: Shop Manual (workshop/service/repair manual)
Brand / Models: Case CX40B and CX50B Hydraulic Excavators
Applicable machines: CX40B PH05-03501~, CX50B PJ04-03001~
Document number: 9-91940 GB
Print reference: Studio ti – 22204 – 2004.07
Language: English
File format: PDF

Complete PDF Bookmark Tree

Complete Bookmarks

The complete bookmarks in the “Case CX40B CX50B Hydraulic Excavator Shop Manual PDF Download” are as follows:

SAFETY PRECAUTIONSp. 3

GENERAL SAFETY INFORMATIONp. 4

SAFETY PRECAUTIONSp. 5

1. OUTLINEp. 11

1.1 GENERAL PRECAUTIONS FOR REPAIRSp. 13

1.2 INTERNATIONAL UNIT CONVERSION SYSTEM (Based on MARKS’ STANDARD HANDBOOK FOR MECHANICAL ENGINEERS)p. 16

2. SPECIFICATIONSp. 21

2.1 COMPONENTS NAMEp. 23

2.2 MACHINE DIMENSIONSp. 24

2.3 SPECIFICATIONS AND PERFORMANCEp. 26

2.4 MACHINE & COMPONENTS WEIGHT (DRY)p. 27

2.5 TRANSPORTATIONp. 29

2.6 TYPE OF CRAWLER SHOESp. 31

2.7 TYPE OF BUCKETp. 32

2.8 ENGINE SPECIFICATIONSp. 34

3. ATTACHMENT DIMENSIONSp. 39

3.1 BOOMp. 41

3.2 ARMp. 45

3.3 BUCKETp. 51

3.4 DOZERp. 53

3.5 SWINGp. 56

11. TOOLSp. 63

11.1 TORQUE SPECIFICATIONS FOR CAPSCREWS & NUTSp. 65

11.2 SCREW AND TOOL SIZESp. 67

11.3 TORQUE SPECIFICATIONS FOR JOINTS AND HOSESp. 67

11.4 TORQUE SPECIFICATIONS FOR SLEEVE TYPE TUBE FITTINGSp. 68

11.5 SPECIAL SPANNERS FOR TUBESp. 69

11.6 SPECIAL TOOLSp. 69

11.7 APPLICATION OF SCREW LOCKING AND SEALING COMPOUNDSp. 69

11.8 COUNTERWEIGHT LIFTING JIGp. 70

11.9 UPPER FRAME LIFTING JIGp. 71

12. STANDARD MAINTENANCE TIME TABLEp. 75

12.1 STANDARD WORKING TIME TABLE FOR THE MAINTENANCE OF EXCAVATORp. 78

13. MAINTENANCE STANDARDS AND TEST PROCEDURESp. 87

13.1 HOW TO USE MAINTENANCE STANDARDS AND PRECAUTIONSp. 89

13.2 PERFORMANCE INSPECTION STANDARD TABLEp. 91

13.3 MEASURING ENGINE SPEEDp. 93

13.4 MEASURING HYDRAULIC OIL PRESSUREp. 95

13.5 MEASURING TRAVEL PERFORMANCESp. 98

13.6 MEASURING SLEW PERFORMANCESp. 100

13.7 MEASURING ATTACHMENT OPERATING PERFORMANCESp. 102

13.8 MEASURING SLEW BEARING PERFORMANCESp. 104

13.9 MEASURING CRAWLER TENSIONp. 105

22. HYDRAULIC SYSTEMp. 109

22.1 SUMMARYp. 111

22.2 HYDRAULIC CIRCUITS AND COMPONENT MODELSp. 112

22.3 HYDRAULIC CIRCUIT OPERATIONp. 114

23. ELECTRICAL SYSTEMp. 123

23.1 HOW TO READ CIRCUIT DIAGRAM AND HARNESS CONNECTIONp. 125

23.2 ELECTRICAL EQUIPMENT & HARNESSp. 126

24. COMPONENTS SYSTEMp. 153

24.1 HYDRAULIC COMPONENTSp. 155

24.1.1 HYDRAULIC PUMPp. 155

24.1.2 PILOT VALVE (ATT)p. 166

24.1.3 2PILOT VALVE (TRAVEL)p. 170

24.1.4 CONTROL VALVEp. 176

24.1.5 SLEWING MOTORp. 194

24.1.6 TRAVEL MOTORp. 201

24.1.7 SWIVEL JOINTp. 212

24.1.8 CYLINDERp. 214

24.2 ELECTRICAL EQUIPMENTp. 222

24.2.1 ELECTRICAL EQUIPMENT LISTp. 222

24.2.2 SPECIFICATIONS ELECTRICAL EQUIPMENTp. 224

31. GENERAL DISASSEMBLY AND ASSEMBLYp. 247

31.1 GENERAL DISASSEMBLY AND ASSEMBLYp. 249

32. ATTACHMENTSp. 253

32.1 REMOVING AND INSTALLINGp. 255

32.2 DISASSEMBLING AND ASSEMBLINGp. 267

33. UPPER SLEWING STRUCTUREp. 287

33.1 REMOVING AND INSTALLINGp. 289

33.2 DISASSEMBLING AND ASSEMBLINGp. 332

CX40-50_2.pdf

34.1 REMOVING AND INSTALLING 34-3p. 419

34.1.1 NAME OF TRAVEL SYSTEM PARTS 34-3p. 419

34.1.2 CRAWLER 34-3p. 419

34.1.3 UPPER ROLLER 34-12p. 419

34.1.4 MAINTENANCE STANDARDS 34-17p. 419

34.1.5 TOOLS AND JIGS 34-18p. 419

34.1.6 LOWER ROLLER 34-19p. 419

34.1.7 FRONT IDLER 34-27p. 419

34.1.8 IDLER ADJUSTER 34-33p. 419

34.1.9 SPROCKET 34-37p. 419

34.1.10 TRAVEL MOTOR 34-38p. 419

34.1.11 SLEWING BEARING 34-40p. 419

34.2 DISASSEMBLING AND ASSEMBLING 34-43p. 419

34.2.1 TRAVEL MOTOR 34-43p. 419

34. TRAVEL SYSTEMp. 421

PREFACEp. 422

34.1 REMOVING AND INSTALLINGp. 423

34.1.1 NAME OF TRAVEL SYSTEM PARTSp. 423

Fig. 34-1 Name and location of partsp. 423

2. Crawelerp. 423

3. Upper rollerp. 423

4. Lower rollerp. 423

5. Front idlerp. 423

6. Idler adjusterp. 423

7. Sprocketp. 423

8. Travel motorp. 423

9. Slewing bearingp. 423

34.1.2 CRAWLERp. 423

34.1.2.1 REMOVAL AND INSTALLATION PROCEDURESp. 423

34.1.2.1.1 Removing Rubber Crawlerp. 423

Fig. 34-2 Crawler removing posturep. 423

Fig. 34-3 Loosing crawler tensionp. 423

Fig. 34-4 Removing rubber crawlerp. 424

34.1.2.1.2 Installing rubber crawlerp. 424

Fig. 34-5 Installing rubber crawlerp. 424

Fig. 34-6 Feeding greasep. 424

Fig. 34-7 Crawler tensionp. 424

34.1.2.2 REMOVAL AND INSTALLATION PROCEDURES (STEEL: OPT)p. 425

Fig. 34-8 Position of master pinp. 425

Fig. 34-9 Removing of master pinp. 425

Fig. 34-10 Loosening grease nipple for adjustmentp. 425

Fig. 34-11 Removing lock pinp. 426

Fig. 34-12 Removing master pinp. 426

Fig. 34-13 Removing crawlerp. 426

Fig. 34-14 Direction of crawlerp. 426

Fig. 34-15 Installing crawlerp. 427

Fig. 34-16 Alignment of pin holesp. 427

Fig. 34-17 Press fitting master pinp. 427

Fig. 34-18 Extension of track link (Example for rubber crawler)p. 427

34.1.2.3 CONSTRUCTIONp. 428

Fig. 34-19 Rubber crawler assyp. 428

Fig. 34-20 Construction of steel crawlerp. 428

34.1.2.4 MAINTENANCE STANDARDSp. 429

Fig. 34-21 Rubber crawler shoep. 429

34.1.3 UPPER ROLLERp. 432

34.1.3.1 REMOVAL AND INSTALLATION PROCEDURESp. 432

34.1.3.1.1 Removalp. 432

Fig. 34-22 Releasing crawler tensionp. 432

Fig. 34-23 Supporting with wooden blocksp. 432

34.1.3.1.2 Installationp. 433

Fig. 34-24 Removing/Installing upper rollerp. 433

34.1.3.2 CONSTRUCTIONp. 433

Fig. 34-25 Construction of upper rollerp. 433

34.1.3.3 DISASSEMBLY AND ASSEMBLYp. 434

34.1.3.3.1 Disassemblingp. 434

Fig. 34-26 Preparation for disassemblyp. 434

Fig. 34-27 Extruding shaftp. 434

Fig. 34-28 Removing out floating sealp. 434

Fig. 34-29 Extruding bushingp. 435

34.1.3.3.2 Installingp. 435

Fig. 34-30 Fixing floating sealp. 435

Fig. 34-31 Pressing shaftp. 435

Fig. 34-32 Installing coverp. 436

Fig. 34-33 Filling oilp. 436

34.1.4 MAINTENANCE STANDARDSp. 437

Fig. 34-34 Sectional view of upper rollerp. 437

34.1.5 TOOLS AND JIGSp. 438

34.1.5.1 Tightening toolsp. 438

34.1.5.2 Jigp. 438

34.1.6 LOWER ROLLERp. 439

34.1.6.1 REMOVAL AND INSTALLATION PROCEDURESp. 439

34.1.6.1.1 Removingp. 439

Fig. 34-35 Lower roller assemblyp. 439

Fig. 34-36 Crawler removing posturep. 439

34.1.6.1.2 Installingp. 439

Fig. 34-37 Installing lower rollerp. 439

34.1.6.2 CONSTRUCTIONp. 440

Fig. 34-38 Lower roller constructionp. 440

34.1.6.3 DISASSEMBLY AND ASSEMBLYp. 440

34.1.6.3.1 Disassemblingp. 440

Fig. 34-39 Removing shaft (4), collar (2) and O-ring (8)p. 440

Fig. 34-40 Removing collar (13)p. 440

Fig. 34-41 Removing the seal (7)p. 441

Fig. 34-42 Removing the seal (7)p. 441

Fig. 34-43 Removing bush (5)p. 441

34.1.6.3.2 Assemblyp. 442

Fig. 34-44 Attach O-ring (8) to one sidep. 442

Fig. 34-45 Press fitting bushing (5)p. 442

Fig. 34-47 Installing roller (1)p. 443

Fig. 34-48 Installing the collar (12)p. 443

Fig. 34-48 Installing oil supply plug (9)p. 444

34.1.6.4 MAINTENANCE STANDARDSp. 445

Fig. 34-50 Lower rollerp. 445

34.1.7 FRONT IDLERp. 447

34.1.7.1 REMOVAL AND INSTALLATION PROCEDURESp. 447

34.1.7.1.1 Removingp. 447

Fig. 34-51 Removing idler assemblyp. 447

Fig. 34-52 Disassembling idler assemblyp. 447

34.1.7.1.2 Installingp. 447

Fig. 34-53 Installing idler assemblyp. 447

34.1.7.2 CONSTRUCTIONp. 448

Fig. 34-54 Idler assembly constructionp. 448

34.1.7.3 DISASSEMBLY AND ASSEMBLYp. 448

34.1.7.3.1 Disassemblyp. 448

Fig. 34-55 Extruding pinp. 448

Fig. 34-56 Extruding shaftp. 448

Fig. 34-57 Removing bushingp. 449

34.1.7.3.2 Assemblyp. 449

Fig. 34-58 Pressing in bushing (2)p. 449

Fig. 34-59 Pressing in shaft (6)p. 449

Fig. 34-60 Inserting floating seal (4)p. 449

Fig. 34-61 Pressing in collar (3)p. 450

Fig. 34-62 Driving pin (5)p. 450

34.1.7.4 MAINTENANCE STANDARDSp. 451

Fig. 34-52 Idler assemblyp. 451

34.1.7.5 TOOLS AND JIGSp. 452

34.1.8 IDLER ADJUSTERp. 453

34.1.8.1 REMOVAL AND INSTALLATION PROCEDURESp. 453

34.1.8.1.1 Removingp. 453

Fig. 34-53 Disassembling idler assemblyp. 453

34.1.8.1.2 Installingp. 453

34.1.8.2 CONSTRUCTIONp. 453

34.1.8.3 DISASSEMBLY AND ASSEMBLYp. 454

Fig. 34-66 Spring set special jig (V)p. 454

Fig. 34-67 Slinging work of idler adjusterp. 454

Fig. 34-68 Fixing Holding-down nut (H)p. 454

Fig. 34-69 Compression of springp. 454

Fig. 34-70 Removing retainer platep. 455

Fig. 34-71 Removing and installing of idler adjuster assemblyp. 455

Fig. 34-72 Attach idler adjuster assembly to the jigp. 455

34.1.8.4 MAINTENANCE STANDARDSp. 456

Fig. 34-73 Idler adjuster assemblyp. 456

34.1.9 SPROCKETp. 457

34.1.9.1 REMOVAL AND INSTALLATION PROCEDURESp. 457

34.1.9.1.1 Removingp. 457

Fig. 34-74 Making sprocket freep. 457

34.1.9.1.2 Installingp. 457

Fig. 34-75 Removing sprocketp. 457

Fig. 34-76 Tightening capscrewp. 457

34.1.9.2 MAINTENANCE STANDARDSp. 457

Fig. 34-77 Sprocketp. 457

34.1.10 TRAVEL MOTORp. 458

34.1.10.1 REMOVAL AND INSTALLATION PROCEDURESp. 458

34.1.10.1.1 Removingp. 458

Fig. 34-78 Making sprocket freep. 458

Fig. 34-79 Removing cover and travel motorp. 458

Fig. 34-80 Removing and installing travel motorp. 458

34.1.10.1.2 Installingp. 458

Fig. 34-81 Installing travel motorp. 458

Tightening torque N.m (lbf.ft)p. 459

Portp. 459

Thread size (PF)p. 459

Spanner used (mm)p. 459

O-ring type fittingp. 459

30˚ flare type fittingp. 459

A,Bp. 459

Pp. 459

DRp. 459

1/2p. 459

1/4p. 459

3/8p. 459

27p. 459

17p. 459

22p. 459

108 (80)p. 459

36.3 (27)p. 459

73.5 (54)p. 459

78.5 (58)p. 459

29.4 (22)p. 459

49.0 (36)p. 459

Fig. 34-82 Installing hydraulic pipings (LH-travel motor)p. 459

Fig. 34-83 Checking oil levelp. 459

34.1.10.2 MAINTENANCE STANDARDSp. 459

34.1.11 SLEWING BEARINGp. 460

34.1.11.1 REMOVAL AND INSTALLATION PROCEDURESp. 460

34.1.11.1.1 Removingp. 460

Fig. 34-84 Slewing bearingp. 460

Fig. 34-85 Lifting slewing bearingp. 460

34.1.11.1.2 Installingp. 460

Fig. 34-86 Location of "S" mark to install slewing bearingp. 460

34.1.11.2 CONSTRUCTIONp. 461

34.1.11.3 DISASSEMBLY AND ASSEMBLYp. 461

34.1.11.3.1 Disassemblingp. 461

Fig. 34-88 Disassembling slewing bearingp. 461

34.1.11.3.2 Assemblingp. 462

Fig. 34-89 Removing balls / spacersp. 462

Fig. 34-90 Installing ballsp. 462

Fig. 34-91 Installing spacerp. 462

34.1.11.4 MAINTENANCE STANDARDSp. 462

34.2 DISASSEMBLING AND ASSEMBLINGp. 463

34.2.1 TRAVEL MOTORp. 463

34.2.1.1 SUMMARYp. 463

OF. Oil filling portp. 463

OL. Oil level check portp. 463

DP. Drain portp. 463

Rotating directionp. 463

Oil inlet portp. 463

Oil outlet portp. 463

Clockwisep. 463

Ap. 463

Bp. 463

Counterclockwisep. 463

Bp. 463

Ap. 463

HS. High speedp. 464

LS. Low speedp. 464

34.2.1.2 TOOLS AND JIGSp. 467

Applicationp. 469

“A”p. 469

Hubp. 469

M12p. 469

Spindlep. 469

M12p. 469

Travel motorp. 469

M12p. 469

34.2.1.3 DISASSEMBLYp. 470

34.2.1.3.1 PREPARATIONS FOR DISASSEMBLYp. 470

34.2.1.3.2 GENERAL PRECAUTIONS FOR WORKINGp. 470

34.2.1.3.3 DISASSEMBLINGp. 471

Fig. 34-92 Mounting lifting eyep. 471

Fig. 34-93 Cleaning travel motorp. 471

Fig. 34-94 Placing travel motor on workbenchp. 471

Fig. 34-95 Fixing travel motor on workbenchp. 471

Fig. 34-96 Removing plug (33)p. 472

Fig. 34-97 Draining oilp. 472

Fig. 34-98 Removing ring (45)p. 472

Fig. 34-99 Removing cover (13)p. 472

Fig. 34-100 Removing sun gear 1 (4)p. 473

Fig. 34-101 Removing carrier assemblyp. 473

Fig. 34-102 Disassembling carrier assemblyp. 473

Fig. 34-103 Removing thrust washer (9)p. 473

Fig. 34-104 Unscrewing hexagonal head screw (40)p. 474

Fig. 34-105 Removing planetary gear 2 (7)p. 474

Fig. 34-106 Unscrewing plug (224)p. 474

Fig. 34-107 Unscrewing plug (226)p. 474

Fig. 34-108 Removing socket bolt (243)p. 475

Fig. 34-109 Removing rear flange (201)p. 475

Fig. 34-110 Removing parallel pin (42)p. 475

Fig. 34-111 Removing O-rings (43) and (44)p. 475

Fig. 34-112 Removing timing plate (109)p. 476

Fig. 34-113 Removing parallel pin (241)p. 476

Fig. 34-114 Removing bearing (150)p. 476

Fig. 34-115 Removing plug (224)p. 476

Fig. 34-116 Removing stopper (225), spring (228) and spool (223)p. 477

Fig. 34-117 Remove the plug (226)p. 477

Fig. 34-118 Removing spring (230) and valve (227)p. 477

Fig. 34-119 Removing O-ring (236)p. 477

Fig. 34-120 Removing O-ring (237)p. 478

Fig. 34-121 Removing plug (221)p. 478

Fig. 34-122 Removing spool (263)p. 478

Fig. 34-123 Removing piston (112)p. 479

Fig. 34-124 Removing piston (112)p. 479

Fig. 34-125 Lifting cylinder block (104)p. 479

Fig. 34-126 Removing cylinder block (104)p. 479

Fig. 34-127 Removing retainer plate (107)p. 480

Fig. 34-128 Removing piston assembly (105) and (106)p. 480

Fig. 34-129 Removing thrust ball (105)p. 480

Fig. 34-130 Removing roller (104)p. 480

Fig. 34-131 Removing spring (114)p. 481

Fig. 34-132 Removing spring (114)p. 481

Fig. 34-133 Removing internals of cylinder block (104)p. 481

Fig. 34-134 Removing swash plate (103)p. 481

Fig. 34-135 Removing drive shaft (102)p. 482

Fig. 34-136 Removing 2-speed switching piston kitp. 482

Fig. 34-137 Removing ball bearing (149)p. 482

Fig. 34-138 Fixing spindle (2)p. 482

Fig. 34-139 Removing hexagon set screw (47)p. 483

Fig. 34-140 Loosen ring nut (22)p. 483

Fig. 34-141 Installing jigp. 483

Fig. 34-142 Removing ring nut (22)p. 483

Fig. 34-143 Removing spindle (2)p. 484

Fig. 34-144 Removing floating seal (31)p. 484

Fig. 34-145 Removing ball bearing (24)p. 484

Fig. 34-146 Removing floating seal (31)p. 484

Fig. 34-147 Removing oil seal (132)p. 485

Fig. 34-148 Cleaning each partp. 485

Fig. 34-149 Cleaning each sectionp. 485

Fig. 34-150 Finish cleaningp. 486

Fig. 34-151 Finish cleaningp. 486

34.2.1.4 ASSEMBLYp. 487

34.2.1.4.1 PREPARATIONp. 487

34.2.1.4.2 GENERAL PRECAUTIONS FOR ASSEMBLYp. 487

34.2.1.4.3 ASSEMBLING PROCEDUREp. 487

NOTE: After replacing any of the following parts with new ones, adjust the preload of the ball bearing and thickness of the snap ring without fail:p. 487

NOTE: When replacing any of the above parts, use the parts previously adjusted. Otherwise, the travel motor may malfunction resulting in premature breakage.p. 487

Fig. 34-152 Inserting bearing (24)p. 488

Fig. 34-153 Installing floating seal (31)p. 488

Fig. 34-154 Lifting hub (1)p. 488

Fig. 34-155 Installing hub (1) to the workbenchp. 488

Fig. 34-156 Installing floating seal (31)p. 489

Fig. 34-157 Inserting spindle (2)p. 489

Fig. 34-158 Installing ring nut (22)p. 489

Fig. 34-159 Attaching hexagon set screw (47)p. 489

Fig. 34-160 Removing fixing platep. 490

Fig. 34-161 Installing Oil seal (132)p. 490

Fig. 34-162 Installing piston kitp. 490

Fig. 34-163 Inserting bearing (149)p. 490

Fig. 34-164 Inserting shaftp. 491

Fig. 34-165 Installing swash plate (103)p. 491

Fig. 34-166 Assembling cylinder blockp. 491

Fig. 34-167 Installing snap ring (145)p. 491

Fig. 34-168 Installing rollers (151)p. 492

Fig. 34-169 Assembling piston assembly into retainer platep. 492

Fig. 34-170 Inserting cylinder block (104)p. 492

Fig. 34-171 Installing friction plates (115) and separator plates (116)p. 493

Fig. 34-172 Installing piston (112)p. 493

Fig. 34-173 Inserting plug (226)p. 493

Fig. 34-174 Temporarily tightening plug (226)p. 493

Fig. 34-175 Inserting spool (223)p. 494

Fig. 34-176 Installing O-ring (236)p. 494

Fig. 34-177 Temporarily tightening plug (224)p. 494

Fig. 34-178 Inserting spool (263)p. 494

Fig. 34-179 Installing bearing (150)p. 495

Fig. 34-180 Installing timing plate (109)p. 495

Fig. 34-181 Installing O-rings (43) and (44)p. 495

Fig. 34-182 Installing parallel pin (42)p. 495

Fig. 34-183 Installing rear flange (201)p. 496

Fig. 34-184 Tightening socket bolts (243)p. 496

Fig. 34-185 Tightening plug (226)p. 496

Fig. 34-186 Tightening plug (224)p. 496

NOTE: If the tapped hole of carrier (3) is smeared oil or grease, degrease it by using the tap (M8 1.25). After that clean it wi…p. 497

Fig. 34-187 Installing planetary gear 1 (5)p. 497

Fig. 34-188 Tightening hexagon head screw (40)p. 497

Fig. 34-189 Installing planetary gear 2p. 497

Fig. 34-190 Tightening hexagon head screw (40)p. 498

Fig. 34-191 Installing sun gear (102)p. 498

Fig. 34-192 Installing carrier assemblyp. 498

Fig. 34-193 Installing sun gear 1 (4)p. 498

Fig. 34-194 Supplying lubricating oilp. 499

Fig. 34-195 Installing cover (13)p. 499

Fig. 34-196 Removing travel motorp. 499

34.2.1.5 34.2.1.5 MAINTENANCE STANDARDSp. 500

34.2.1.6 Performance verification testp. 502

42.1 GENERAL PRECAUTIONS 42-3p. 503

42.1.1 CONFIRM ACTUAL TROUBLED CONDITIONS AT SITE 42-3p. 503

42.2 TROUBLE DIAGNOSIS: HYDRAULIC 42-4p. 503

42.3 TROUBLESHOOTING 42-5p. 503

42.3.1 ATTACHMENT 42-5p. 503

42.3.2 TRAVEL OPERATION 42-7p. 503

42.3.3 SLEWING OPERATION 42-10p. 503

42.3.4 PUMP 42-11p. 503

42. TROUBLESHOOTING (HYDRAULIC SYSTEM)p. 505

42.1 GENERAL PRECAUTIONSp. 507

42.1.1 CONFIRM ACTUAL TROUBLED CONDITIONS AT SITEp. 507

Fig. 42-1 Make field investigationp. 507

Fig. 42-2 Verifying background of trouble occurred.p. 507

Fig. 42-3 Diagnosing trouble by means troubleshooting.p. 507

42.2 TROUBLE DIAGNOSIS: HYDRAULICp. 508

42.3 TROUBLESHOOTINGp. 509

42.3.1 Attachmentp. 509

42.3.1.1 Attachment operational failure (Excluding swing operations)p. 509

42.3.1.2 Attachment speed is slowp. 509

42.3.1.3 Attachment operating power is lowp. 510

42.3.1.4 Malfunction of attachmentp. 510

42.3.2 Travel operationp. 511

42.3.2.1 Travel operational failurep. 511

42.3.2.2 Travel speed is slowp. 512

42.3.2.3 Travel power is lowp. 512

42.3.2.4 It deviates in travel independent operationp. 513

42.3.3 Slewing operationp. 514

42.3.3.1 Slewing operational failurep. 514

42.3.3.2 Slewing speed is slowp. 514

42.3.3.3 Slewing power is lowp. 515

42.3.3.4 Malfunction of slewing operationp. 515

42.3.4 Pumpp. 515

42.3.4.1 Engine speed is reduced due to pump loadp. 515

42.3.4.2 Malfunction of pumpp. 516

43.1 TROUBLE DIAGNOSIS: ELECTRIC SYSTEM 43-3p. 517

43.2 TROUBLESHOOTING 43-4p. 517

43.2.1 GENERAL 43-4p. 517

43.2.2 ATTACHMENT OPERATION 43-8p. 517

43.2.3 TRAVEL OPERATION 43-9p. 517

43.2.4 DECELERATION 43-10p. 517

43. TROUBLESHOOTING (ELECTRICAL SYSTEM)p. 519

43.1 TROUBLE DIAGNOSIS: ELECTRIC SYSTEMp. 521

43.2 TROUBLESHOOTINGp. 522

43.2.1 GENERALp. 522

43.2.1.1 Engine does not start.p. 522

43.2.1.2 Horn does not sound.p. 524

43.2.1.3 Working light does not light up.p. 524

43.2.1.4 Hourmeter does not actuate.p. 525

43.2.1.5 Fuel gauge does not actuate.p. 525

43.2.1.6 Water temperature meter does not actuate.p. 526

43.2.2 Attachment operationp. 526

43.2.2.1 All controls do not function (Excluding swing operations)p. 526

43.2.3 Travel operationp. 527

43.2.3.1 Travel 1 & 2 speed change can not be carried out.p. 527

43.2.4 Decelerationp. 528

43.2.4.1 Decel change operation in option can not be carried out.p. 528

44.1 TROUBLE DIAGNOSIS: ENGINE 44-3p. 529

44.2 TROUBLESHOOTING 44-6p. 529

44.2.1 STARTING TROUBLE 44-6p. 529

44.2.2 E/G ROTATION TROUBLE 44-8p. 529

44.2.3 OUTPUT DROPS DOWN 44-9p. 529

44.2.4 OTHER TROUBLE 44-10p. 529

44.3 ELECTRICAL EQUIPMENT 44-13p. 529

44.3.1 ELECTRICAL EQUIPMENT LIST 44-13p. 529

44. TROUBLESHOOTING (ENGINE)p. 531

44.1 TROUBLE DIAGNOSIS: ENGINEp. 533

44.2 TROUBLESHOOTINGp. 536

44.2.1 STARTING TROUBLEp. 536

44.2.1.1 Starter does not rotatep. 536

44.2.1.2 Starter rotates but hard to startp. 537

NOTE: Check with the engine start key being in ON position.p. 537

44.2.2 E/G ROTATION TROUBLEp. 538

NOTE: Check the above items in the condition of coolant temperature at more than 50˚C. (122˚F)p. 538

44.2.3 OUTPUT DROPS DOWNp. 539

44.2.3.1 Engine output not enoughp. 539

NOTE: Check in the condition of operating at high speed.p. 539

44.2.3.2 Knocking at high temperaturep. 540

NOTE: Check in the condition at engine coolant temperature of more than 50˚C. (122˚F)p. 540

44.2.4 OTHER TROUBLEp. 540

44.2.4.1 Exhaust troublep. 540

NOTE: Note: Check in the condition at engine coolant temperature of more than 50˚C. (122˚F)p. 540

NOTE: A breather mechanism of blow-by gas reduction system is applied to the engine as shown in the right drawing. Remove and plug the suction manifold to check blow-by gas.p. 541

Costruction of breather mechanismp. 541

44.2.4.2 Excessive oil consumptionp. 542

NOTE: Check in the condition of no engine oil leakage.p. 542

44.2.4.3 Excessive fuel consumptionp. 542

NOTE: Check in the condition the proper fuel is used.p. 542

44.2.4.4 Engine not stop when key turned OFFp. 542

NOTE: Check with the engine start key being in OFF position.p. 542

44.3 ELECTRICAL EQUIPMENTp. 543

44.3.1 ELECTRICAL EQUIPMENT LISTp. 543

71.1 HYDRAULIC CIRCUIT DIAGRAM 71-1p. 761

71.1.1 STANDARD SPECIFICATION 71-1p. 761

71.1.2 HYDRAULIC CIRCUIT OPERATION 71-3p. 761

71.1.3 SCHEMATIC PIPING FOR HYDRAULIC SYSTEM 71-13p. 761

71.2 ELECTRIC CIRCUIT DIAGRAM 71-15p. 761

MIR CX40B -50B_A3_gb.pdf

This page is blank because of editing convenience.

71.2 ELECTRIC CIRCUIT DIAGRAM

Fig. 71- 13 (3/3)p. 780

MIR CX40B -50B_A3_gb.pdf

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71.2 ELECTRIC CIRCUIT DIAGRAM

Fig. 71- 13 (3/3)p. 780

0051_MOTORE.pdf

51.1 Generalp. 556

51.2 Inspection and Adjustmentp. 574

51.3 Troubleshootingp. 609

51.4 Disassembly, Inspection and Reassembly of Enginesp. 617

51.5 LUBRICATION SYSTEMp. 671

51.6 COOLING SYSTEMp. 676

51.7 FUEL INJECTION PUMP/GOVERNORp. 678

51.8 TURBOCHAGER: Disassembly, inspection and reassemblyp. 684

51.9 STARTING MOTORp. 707

51.10 ALTERNATORp. 733

51.11 ELECTRIC WIRINGp. 737

51.12 SERVICE STANDARDSp. 747

51.13 TIGHTENING TORQUE for BOLTS and NUTSp. 758

Chapters Covered

1. Outline – general repair precautions, disassembly/assembly safety, SI unit conversion
2. Specifications – machine dimensions, performance data, engine specifications, weights
3. Attachment Dimensions – boom, arm, bucket and dozer dimensional data
11. Tools – special service tools and classification
12. Standard Maintenance Time Table – standard working time reference for maintenance jobs
13. Maintenance Standards and Test Procedures
22. Hydraulic System – circuit description and component function
23. Electrical System – wiring, connectors and component ratings
24. Components System – hydraulic pump, motors, control valve and cylinder specifications
31–34. Disassembling – whole machine, attachments, upper slewing structure and travel system disassembly/assembly
42–44. Troubleshooting – hydraulic system, electrical system and engine diagnostics
51. Engine – full Yanmar 4TNV88-XYB overhaul, inspection limits and reassembly
Installation Procedures for Optional Attachment
71. Supporting Data – wiring and hydraulic circuit reference diagrams

Taken together, these chapters give a technician everything needed to work on a CX40B or CX50B from routine servicing through to a complete engine and hydraulic system rebuild, without having to guess at torque values, clearances or wiring color codes.

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Engine and Hydraulic Coverage

The engine section is built around the Yanmar 4TNV88-XYB, a water-cooled, 4-cycle, swirl-chamber diesel with 4 cylinders, an 88 mm bore and 90 mm stroke, 2.189 L total displacement, and a rated output of 30.4 kW (41.3 PS) at 2400 min^-1. Crankshaft, cylinder head, piston, ring and cylinder block inspection limits are all laid out with numeric tolerances, so a rebuild can be measured and verified rather than estimated. The hydraulic section documents the variable-displacement axial piston pump plus gear pump combination, the 11-spool multiple control valve, the travel motors with reducer, the swing motor, and the double-acting boom, arm, bucket, swing and dozer cylinders, with rated pressures and flow rates given for each component so a hydraulic fault can be traced to the correct part rather than swapped by trial and error.

Why This Case CX40B CX50B Shop Manual Matters

With this Case CX40B CX50B Hydraulic Excavator Shop Manual on hand, a technician can service, diagnose and repair either machine using the manufacturer’s own torque specifications, clearance limits and system pressures instead of generic figures pulled from a different model. Following the correct procedures for the hydraulic, electrical and engine systems protects the machine from the kind of damage that comes from improvised repairs, and keeps the excavator working to its designed performance and gradeability.

This Case CX40B CX50B Shop Manual is delivered as an instant PDF download immediately after payment – no shipping wait, no physical copy to lose. It can be opened on a laptop, tablet or phone in the shop, and printed if a paper copy is preferred for the bench.

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Case CX40B CX50B Hydraulic Excavator Shop Manual PDF Download

Description

Case CX40B CX50B Hydraulic Excavator Shop Manual

File Details

Complete Bookmarks

Chapters Covered

IMAGES PREVIEW

Engine and Hydraulic Coverage

Why This Case CX40B CX50B Shop Manual Matters

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