Case 721E Service Manual
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Case 721E Service Manual

Wheel loader
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SERVICE MANUAL
WHEEL LOADER
721E
TIER 3
84243980
(Replaces 87634099)
Revised December 2009
Issued September 2007

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Summary of Contents for Case 721E

  • Page 1 SERVICE MANUAL WHEEL LOADER 721E TIER 3 84243980 (Replaces 87634099) Revised December 2009 Issued September 2007...
  • Page 2 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...
  • Page 3 721E Wheel Loader Service Manual 84243980 (Replaces 87364099) Table of Contents Description Section No. Form No. Power Train Tab 6 84251801 Section Index - Power Train (Replaces 5-2820) Removal and Installation of Power Train Components 6001 5-2830 Transmission Specifications, Pressure Checks, and Troubleshooting...
  • Page 4 721E Wheel Loader Service Manual 84243980 (Replaces 87364099) Table of Contents Description Section No. Form No. Mounted Equipment Tab 9 Section Index - Mounted Equipment 5-3020 Air Conditioning Troubleshooting and System Checks For Systems with HFC-134a 9002 5-4030 Refrigerant Air Conditioner System Service...
  • Page 5 Metric Conversion Chart ..............1003 Copyright © 2006 CNH America LLC. All rights reserved. CNH America LLC. Printed in U.S.A. 700 State Street Issued August, 2006 Racine, WI 53404 U.S.A. Bur 5-2670 Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 6 Section 1001 GENERAL TORQUE SPECIFICATIONS Copyright © 2004 CNH America LLC. All rights reserved. CASE, LLC. Printed in U.S.A. 700 State Street Issued April, 2003 Revised July, 2005 Racine, WI 53404 U.S.A. Bur 8-71603 Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 7 TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS ........6 Bur 8-71603 Revised 7-05 Printed in U.S.A. Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 8 800 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 Bur 8-71603 Revised 7-05 Printed in U.S.A. Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 9 920 to 1100 1250 to 1500 Usually the torque values specified for grade 10.9 1600 to 1950 2175 to 2600 fasteners can be used satisfactorily on grade 12.9 fasteners. Bur 8-71603 Revised 7-05 Printed in U.S.A. Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 10 27 to 34 7/16-14 420 to 540 47 to 61 Pound- Newton Size Feet metres 1/2-13 55 to 65 74 to 88 5/8-11 140 to 150 190 to 203 Bur 8-71603 Revised 7-05 Printed in U.S.A. Find manuals at http://best-manuals.com/search?&s=CASE-84243980...
  • Page 11 1001-6 TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS O-ring Boss End O-ring Face Seal End Fitting or Lock Nut Nom. Dash Thread Pound- Newton Thread Pound- Newton Size Tube OD Size Inches metres Size Inches metres 1/4 inch 9/16-18 120 to 144 14 to 16 7/16-20 204 to 240...
  • Page 12 Section 1002 FLUIDS AND LUBRICANTS Copyright © 2006 CNH America LLC. All rights reserved. CNH America LLC. Printed in U.S.A. 700 State Street Issued August, 2006 Racine, WI 53404 U.S.A. Bur 5-2680...

  • Page 13: Table Of Contents

    Model 721E ........

  • Page 14: Capacities And Lubricants

    CAPACITIES AND LUBRICANTS Engine Oil Capacity with Filter Change ..................14.2 liters (15 U.S. quarts) Type of oil ........Case AKCELA No. 1 engine oil - see engine oil recommendations on page 4 Engine Cooling System Capacity........................36.9 liters (9.75 U.S. Gallons) Type of Coolant ....................50% water and 50% Ethylene Glycol...

  • Page 15: Engine Oil Recommendations

    1002-4 ENGINE OIL RECOMMENDATIONS Case AKCELA No. 1 Engine oil is recommended for use in your Case engine. Case AKCELA No. 1 Engine Oil will lubricate your engine correctly under all operating conditions. If Case AKCELA No. 1 Multi-Viscosity Oil is not...

  • Page 16: Transmission Temperature Chart

    1002-5 TRANSMISSION TEMPERATURE CHART BC04F193 DIESEL FUEL SYSTEM Fuel Storage Use No. 2 diesel fuel in the engine of this machine. The use of other fuels can cause the loss of engine If you keep fuel in storage for a period of time, you power and high fuel consumption.

  • Page 17: Maintenance Schedule

    1002-6 MAINTENANCE SCHEDULE Model 721E FREQUENCY IN HOURS SERVICE SERVICE POINTS INTERVAL Air cleaner Hydraulic Filter Variable Alternator, AC, Drive Belt Periodic Radiator Coolant Level ( * ) Fire extinguisher Tires Every 10 Hours Check Engine Oil Level Check Engine Coolant Level...

  • Page 18: Maintenance Points

    1002-7 MAINTENANCE POINTS Model 721E 12 23 21 15 19 25 24 21 15 17 28 27 BC06F531 See your Operators manual for maintenance of If you operate the machine in severe conditions, safety related items and for detailed information of lubricate and service the machine more frequently.
  • Page 19 1002-8 NOTES Bur 5-2680 Issued 8-06 Printed in U.S.A.
  • Page 20 Section 1003 METRIC CONVERSION CHART Copyright © 2003 CNH Ameica LLC. All rights reserved. CNH America LLC. Printed in U.S.A. 700 State Street Issued April, 2003 Racine, WI 53404 U.S.A. Bur 7-52590...
  • Page 21 1003-2 TABLE OF CONTENTS CONVERSION FACTORS ..............3 Metric to U.S.
  • Page 22 1003-3 CONVERSION FACTORS Metric to U.S. MULTIPLY TO OBTAIN Area: sq. meter 10.763 91 square foot hectare 2.471 05 acre Force: newton 3.596 942 ounce force newton 0.224 809 pound force Length: millimeter 0.039 370 inch meter 3.280 840 foot kilometer 0.621 371 mile...
  • Page 23 1003-4 U.S. to Metric MULTIPLY TO OBTAIN Area: square foot 0.092 903 square meter acre 0.404 686 hectare Force: ounce force 0.278 014 newton pound force 4.448 222 newton Length: inch 25.4 * millimeter foot 0.304 8 * meter mile 1.609 344 * kilometer Mass:...
  • Page 24 SECTION INDEX ENGINES Section Title Section Number Engine and Radiator Removal and Installation ..........2000 Stall Tests .
  • Page 25 Section 2000 ENGINE AND RADIATOR REMOVAL AND INSTALLATION Copyright © 2006 CNH Ameica LLC. All rights reserved. CNH America LLC. Printed in U.S.A. 700 State Street Issued August, 2006 Racine, WI 53404 U.S.A. Bur 5-2700...
  • Page 26 2000-2 TABLE OF CONTENTS Engine ................. . 3 Removal .
  • Page 27 2000-3 ENGINE Removal STEP 5 STEP 1 BD02N160 Put a 37 liter (10 gallon) container below radiator drain. Remove radiator cap. Remove cap and drain BD03A040 coolant into container. Install cap after coolant has Park machine on a level surface and lower bucket to drained.
  • Page 28 2000-4 STEP 7 STEP 10 BD03A231 BD06F109 Double up a nylon lifting strap (1) and slide through Tag and disconnect hood wiring harness connector the exhaust stack (2) on the hood. from rear chassis wiring harness connector. STEP 8 STEP 11 BD03A230 BD03A227 Place a solid steel bar through the strap, raise the...
  • Page 29 2000-5 STEP 12 STEP 15 BD03A232 BD06F110 Carefully raise and remove hood from loader. Lower Loosen clamps on turbocharger and air cleaner, hood onto suitable platform and disconnect lifting remove the intake hose. equipment. STEP 16 STEP 13 BD06F110 Loosen the clamp on the turbocharger for the after BD03A224 Tag and disconnect engine wiring harness connector cooler inlet hose.
  • Page 30 2000-6 STEP 18 STEP 21 BD06F112 BD06F111 Remove the air cleaner and muffler from the bracket. Loosen the clamp on the intake manifold for the after cooler output hose. STEP 22 STEP 19 BD06F113 BD03A118 Loosen the clamp on the after cooler and remove the after cooler outlet hose from the machine.
  • Page 31 2000-7 STEP 23 STEP 26 BD06F115 BD06F118 Remove the drive belt from the engine. Tag and disconnect the wiring from the alternator. STEP 24 STEP 27 BD06F116 BD06F119 Loosen clamps and remove lower cooler hose from Remove bolt securing wiring harness clamp to the engine.
  • Page 32 2000-8 STEP 29 STEP 32 BD06F121 BD06F111 Tag and remove the wires from the starter solenoid Tag and remove the grid heater cable. (3), remove the ground cable (2), and ground strap STEP 33 (1) from the starter. NOTE: Move the starter cables away from the engine, move the wiring harness away from the engine.
  • Page 33 2000-9 STEP 35 STEP 38 BD06F127 BD06F124 Remove the lower cover for the drive shaft. Tag and disconnect the fuel filter heater wires (1), disconnect the fuel line (2) from the fuel filter head, STEP 39 plug the line and cap the fitting. STEP 36 BD03A172 Remove the drive shaft bolts from the flywheel.
  • Page 34 2000-10 Installation BS03B035 1. ENGINE MOUNT BOLT 3. INSOLATOR UPPER 5. WASHER 7. NUT 2. WASHER 4. INSOLATOR LOWER 6. WASHER 8. REMOTE OIL DRAIN HOSE STEP 42 STEP 47 If engine rubber isolators require replacement, remove and discard isolators (3 and 4). Install new rubber isolator (4), then rubber isolator (3).
  • Page 35 2000-11 STEP 48 STEP 51 BD06F127 BD06F124 Install the lower cover for the drive shaft. Remove cap from fitting and plug from the hose, connect fuel line (2). Connect fuel filter heater wires STEP 49 (1). Remove and discard tag. STEP 52 BD06F126 Connect and turn on vacuum pump to the hydraulic...
  • Page 36 2000-12 STEP 54 STEP 57 BD06F111 BD06F121 Connect grid heater cable to grid heater. Remove Install the wires to the starter solenoid (3), install the and discard tag. ground cable (2), and ground strap (1) to the starter. Remove and discard tags. STEP 55 STEP 58 BD06F122...
  • Page 37 2000-13 STEP 60 STEP 63 BD06F118 BD06F115 Connect the wiring to the alternator. Remove and Install the drive belt. discard tags. STEP 64 STEP 61 BD06F113 BD06F117 If loader is equipped with air conditioning, mount the compressor using the three mounting bolts (2), connect the engine wiring harness connectors to air compressor clutch connector (1).
  • Page 38 2000-14 STEP 65 STEP 68 BD06F112 BD06F111 Place the muffler and air cleaner on the bracket. Tighten the clamp on the intake manifold for the after Install mounting bolts in air cleaner and tighten, cooler output hose. install the mounting bolts in the muffler and leave loose at this time.
  • Page 39 2000-15 STEP 71 STEP 74 BD06F110 BD03A232 Install the intake hose and tighten the clamps on Carefully raise and place hood over loader. turbocharger and air cleaner. NOTE: Refer to step 7 and 8 of removal for lifting procedure. STEP 72 STEP 75 BD03A225 Install the crankcase ventilation hose and tighten the...
  • Page 40 2000-16 STEP 76 STEP 78 BD03A221 BD03A228 NOTE: If hood strut is not adjusted properly the Install the pin from the top of the lifting motor, lower and remove lifting equipment. hood will be damaged. When a hood is removed and replaced an initial STEP 77 adjustment on the strut is necessary.
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