Case 721E Manual de usuario

SERVICE MANUAL

WHEEL LOADER

721E

TIER 3

North American English

Part Number 84243980

Printed in U.S.A. • Rac

Case is a registered trademark of CNH America

84243980

(Replaces 87634099)

Revised December 2009

Issued September 2007

CNH AMERICA LLC

700 STATE STREET

RACINE, WI 53404 U.S.A.

Printed in U.S.A.

Revised December 2009 (Issued August 2006)

CNH America LLC.

700 State Street

Racine, WI 53404 U.S.A. (Replaces 5-2660)

721E Wheel Loader

Service Manual 84243980

(Replaces 87364099)

Table of Contents

Description Section No. Form No.

General Tab 1

Section Index - General 5-2670

Standard Torque Specifications 1001 8-71603

Fluids and Lubricants 1002 5-2680

Metric Conversion Chart 1003 7-52950

Engines Tab 2

Section Index - Engines 5-2690

Engine and Radiator Removal and Installation 2000 5-2700

Stall Tests 2002 5-2710

After Cooler 2003 6-49850

For Engine Repair, See the Engine Service Manual 87519803

Fuel System Tab 3

Section Index - Fuel System 5-2720

For Fuel System Repair, See the Engine Service Manual

Electrical Tab 4

Section Index - Electrical 5-2730

Removal and Installation of Starter and Alternator 4001 5-2740

Electrical Specifications and Troubleshooting 4002 5-2750

Batteries 4003 6-42330

Instrument Cluster 4005 5-2760

Steering Tab 5

Section Index - Steering 84298386

(Replaces 5-2770)

Removal and Installation of Steering Components 5001 5-2780

Steering Specifications, Pressure Checks, and Troubleshooting 5002 5-2790

Steering Cylinders 5005 5-2800

Center Pivot 5006 5-2810

Auxiliary Steering Motor and Pump 5008 6-42430

Joystick Steering 5009 5-17020

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Printed in U.S.A.

Revised December 2009 (Issued August 2006)

CNH America LLC.

700 State Street

Racine, WI 53404 U.S.A. (Replaces 5-2660)

Power Train Tab 6

Section Index - Power Train 84251801

(Replaces 5-2820)

Removal and Installation of Power Train Components 6001 5-2830

Transmission Specifications, Pressure Checks, and Troubleshooting 6002 5-2840

Transmission 6003 5-2850

Front Axle 6004 5-2860

Rear Axle 6004 5-2870

Rear Axle, Serial Number N8F203816 and After 6004 84243983

Drive Shafts, Center Bearing, and Universal Joints 6005 5-2880

Wheels and Tires 6006 6-47730

Transmission Control Valve 6007 6-81450

Brakes Tab 7

Section Index - Brakes 5-2890

Removal and Installation of Brake Components 7001 5-2900

Hydraulic Brake Troubleshooting 7002 5-2910

Brake Pump 7003 5-2920

Brake Accumulators 7004 6-47761

Parking Brake 7008 5-2930

Hydraulics Tab 8

Section Index - Hydraulics 5-2940

Removal and Installation of Hydraulic Components 8001 5-2950

Hydraulic Specifications, Troubleshooting, and Pressure Checks 8002 5-2960

Cleaning the Hydraulic System 8003 7-49641

Hydraulic Pump 8004 5-2970

Loader Control Valve 8005 5-2980

Cylinders 8006 5-2990

Coupler Solenoid Locking Valve 8007 6-42600

Ride Control Accumulator 8013 5-3000

Ride Control Valve 8014 5-3010

721E Wheel Loader

Service Manual 84243980

(Replaces 87364099)

Table of Contents

Description Section No. Form No.

Find manuals at http://best-manuals.com/search?&s=CASE-84243980

Printed in U.S.A.

Revised December 2009 (Issued August 2006)

CNH America LLC.

700 State Street

Racine, WI 53404 U.S.A. (Replaces 5-2660)

Mounted Equipment Tab 9

Section Index - Mounted Equipment 5-3020

Air Conditioning Troubleshooting and System Checks For Systems with HFC-134a

Refrigerant 9002 5-4030

Air Conditioner System Service 9003 5-3030

Removal And Installation Of Air Conditioning And Heater Components 9004 5-3040

Loader 9006 5-3050

Roll Over Protective Structure (ROPS), Cab Structural Frame (CSF) 9007 5-3060

Cab Glass Installation 9010 6-42710

Electrical Schematic Foldouts and Hydraulic Schematic Foldout In Rear Pocket 5-3070

721E Wheel Loader

Service Manual 84243980

(Replaces 87364099)

Table of Contents

Description Section No. Form No.

Find manuals at http://best-manuals.com/search?&s=CASE-84243980

Printed in U.S.A.

Issued August, 2006

CNH America LLC.

700 State Street

Racine, WI 53404 U.S.A. Bur 5-2670

SECTION INDEX

GENERAL

Standard Torque Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1001

Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1002

Metric Conversion Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1003

Section Title Section Number

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Section

1001

Printed in U.S.A.

Issued April, 2003 Revised July, 2005

CASE, LLC.

700 State Street

Racine, WI 53404 U.S.A. Bur 8-71603

GENERAL TORQUE SPECIFICATIONS

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1001-2

Bur 8-71603 Revised 7-05 Printed in U.S.A.

TABLE OF CONTENTS

TORQUE SPECIFICATIONS - DECIMAL HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

TORQUE SPECIFICATIONS - METRIC HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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1001-3

Bur 8-71603 Revised 7-05 Printed in U.S.A.

TORQUE SPECIFICATIONS - DECIMAL HARDWARE

Use the torques in this chart when special torques

are not given. These torques apply to fasteners with

both UNC and UNF threads as received from

suppliers dry, or when lubricated with engine oil. Not

applicable if special graphities, Molydisulfide

greases, or other extreme pressure lubricants are

used.

Grade 5 Bolts, Nuts, and Studs

Size

Pound-

Inches

Newton

metres

1/4 inch 108 to 132 12 to 15

5/16 inch 204 to 252 23 to 28

3/8 inch 420 to 504 48 to 57

Size

Pound-

Feet

Newton

metres

7/16 inch 54 to 64 73 to 87

1/2 inch 80 to 96 109 to 130

9/16 inch 110 to 132 149 to 179

5/8 inch 150 to 180 203 to 244

3/4 inch 270 to 324 366 to 439

7/8 inch 400 to 480 542 to 651

1.0 inch 580 to 696 787 to 944

1-1/8 inch 800 to 880 1085 to 1193

1-1/4 inch 1120 to 1240 1519 to 1681

1-3/8 inch 1460 to 1680 1980 to 2278

1-1/2 inch 1940 to 2200 2631 to 2983

Grade 8 Bolts, Nuts, and Studs

Size

Pound-

Inches

Newton

metres

1/4 inch 144 to 180 16 to 20

5/16 inch 288 to 348 33 to 39

3/8 inch 540 to 648 61 to 73

Size

Pound-

Feet

Newton

metres

7/16 inch 70 to 84 95 to 114

1/2 inch 110 to 132 149 to 179

9/16 inch 160 to 192 217 to 260

5/8 inch 220 to 264 298 to 358

3/4 inch 380 to 456 515 to 618

7/8 inch 600 to 720 814 to 976

1.0 inch 900 to 1080 1220 to 1465

1-1/8 inch 1280 to 1440 1736 to 1953

1-1/4 inch 1820 to 2000 2468 to 2712

1-3/8 inch 2380 to 2720 3227 to 3688

1-1/2 inch 3160 to 3560 4285 to 4827

NOTE: Use thick nuts with Grade 8 bolts.

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1001-4

Bur 8-71603 Revised 7-05 Printed in U.S.A.

TORQUE SPECIFICATIONS - METRIC HARDWARE

Use the following torques when specifications are not

given.

These values apply to fasteners with coarse threads

as received from supplier, plated or unplated, or

when lubricated with engine oil. These values do not

apply if graphite or Molydisulfide grease or oil is

used.

Grade 12.9 Bolts, Nuts, and Studs

Usually the torque values specified for grade 10.9

fasteners can be used satisfactorily on grade 12.9

fasteners.

Grade 8.8 Bolts, Nuts, and Studs

Size

Pound-

Inches

Newton

metres

M4 24 to 36 3 to 4

M5 60 to 72 7 to 8

M6 96 to 108 11 to 12

M8 228 to 276 26 to 31

M10 456 to 540 52 to 61

Size

Pound-

Feet

Newton

metres

M12 66 to 79 90 to 107

M14 106 to 127 144 to 172

M16 160 to 200 217 to 271

M20 320 to 380 434 to 515

M24 500 to 600 675 to 815

M30 920 to 1100 1250 to 1500

M36 1600 to 1950 2175 to 2600

8.8

Grade 10.9 Bolts, Nuts, and Studs

Size

Pound-

Inches

Newton

metres

M4 36 to 48 4 to 5

M5 84 to 96 9 to 11

M6 132 to 156 15 to 18

M8 324 to 384 37 to 43

Size

Pound-

Feet

Newton

metres

M10 54 to 64 73 to 87

M12 93 to 112 125 to 150

M14 149 to 179 200 to 245

M16 230 to 280 310 to 380

M20 450 to 540 610 to 730

M24 780 to 940 1050 to 1275

M30 1470 to 1770 2000 to 2400

M36 2580 to 3090 3500 to 4200

10.9

12.9

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1001-5

Bur 8-71603 Revised 7-05 Printed in U.S.A.

TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS

37 Degree Flare Fitting

Tube OD

Hose ID

Thread

Size

Pound-

Inches

Newton

metres

1/4 inch

6.4 mm

7/16-20 72 to 144 8 to 16

5/16 inch

7.9 mm

1/2-20 96 to 192 11 to 22

3/8 inch

9.5 mm

9/16-18 120 to 300 14 to 34

1/2 inch

12.7 mm

3/4-16 180 to 504 20 to 57

5/8 inch

15.9 mm

7/8-14 300 to 696 34 to 79

Tube OD

Hose ID

Thread

Size

Pound-

Feet

Newton

metres

3/4 inch

19.0 mm

1-1/16-12 40 to 80 54 to 108

7/8 inch

22.2 mm

1-3/16-12 60 to 100 81 to 135

1.0 inch

25.4 mm

1-5/16-12 75 to 117 102 to 158

1-1/4 inch

31.8 mm

1-5/8-12 125 to 165 169 to 223

1-1/2 inch

38.1 mm

1-7/8-12 210 to 250 285 to 338

Split Flange Mounting Bolts

Size

Pound-

Inches

Newton

metres

5/16-18 180 to 240 20 to 27

3/8-16 240 to 300 27 to 34

7/16-14 420 to 540 47 to 61

Size

Pound-

Feet

Newton

metres

1/2-13 55 to 65 74 to 88

5/8-11 140 to 150 190 to 203

Straight Threads with O-ring

Tube OD

Hose ID

Thread

Size

Pound-

Inches

Newton

metres

1/4 inch

6.4 mm

7/16-20 144 to 228 16 to 26

5/16 inch

7.9 mm

1/2-20 192 to 300 22 to 34

3/8 inch

9.5 mm

9/16-18 300 to 480 34 to 54

1/2 inch

12.7 mm

3/4-16 540 to 804 57 to 91

Tube OD

Hose ID

Thread

Size

Pound-

Feet

Newton

metres

5/8 inch

15.9 mm

7/8-14 58 to 92 79 to 124

3/4 inch

19.0 mm

1-1/16-12 80 to 128 108 to 174

7/8 inch

22.2 mm

1-3/16-12 100 to 160 136 to 216

1.0 inch

25.4 mm

1-5/16-12 117 to 187 159 to 253

1-1/4 inch

31.8 mm

1-5/8-12 165 to 264 224 to 357

1-1/2 inch

38.1 mm

1-7/8-12 250 to 400 339 to 542

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