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MAINTENANCE SAFETY

MSW46-0116

Never service the Bobcat BackhoeLoader without instructions.

Have good ventilation whenwelding or grinding paintedparts.Wear dust mask when grindingpainted parts. Toxic dust and gascan be produced.

Vent exhaust to outside whenengine must be run for service.Exhaust system must be tightlysealed. Exhaust Fumes can killwithout warning.

Never work on backhoe loaderwith lift arms raised unlesssupported by an approved liftarm support device.Always lower the backhoe bucketto the ground before doing anymaintenance.

Always use an approved lift armsupport device when servicing thebackhoe loader with the lift armsraised. Replace the lift arm supportdevice if damaged or missing.Disconnecting or loosening anyhydraulic tubeline, hose, fittingcomponent, or part failure cancause lift arms or backhoe boomto drop.

Cleaning and maintenance arerequired daily.NEVER modify equipment or addattachments not approved byBobcat.

Lead-acid batteries produceflammable and explosive gases.Keep arcs, sparks, flames andlighted tobacco away frombatteries.Batteries contain acid whichburns eyes or skin on contact.Wear protective clothing. If acidcontacts body, flush well withwater. For eye contact flush welland get immediate medicalattention.

Stop, cool and clean engine offlammable materials beforechecking fluids.Never service or adjust machinewith the engine running unlessinstructed to do so in themanual.Avoid contact with leakinghydraulic fluid or diesel fuelunder pressure. It can penetratethe skin or eyes.Never fill fuel tank with enginerunning, while smoking or whennear open flame.

CORRECT

B-10731a B-16768

CORRECT CORRECT

B-16738

WRONG

B-16730

WRONG

B-16746

WRONG

B-16719

B-16571

WRONG WRONG

B-16731 B-6589

WRONG

WARNINGInstructions are necessary before operating or servicing machine. Read andunderstand the Operation & Maintenance Manual, Operator’s Handbook andsigns (decals) on machine. Follow warnings and instructions in the manualswhen making repairs, adjustments or servicing. Check for correct function afteradjustments, repairs or service. Untrained operators and failure to followinstructions can cause injury or death.

W-2003-0807

Maintenance procedures which are given in the Operation & Maintenance Manual can be performed by the owner/operator without any specific technical training. Maintenance procedures which are not in the Operation &Maintenance Manual must be performed ONLY BY QUALIFIED BOBCAT SERVICE PERSONNEL. Always usegenuine Bobcat replacement parts.

Safety Alert Symbol: This symbol with a warning statement, means: “Warning, be alert! Your safety is involved!” Carefully read the message that follows.

Keep body, jewelry and clothingaway from moving parts,electrical contact, hot parts andexhaust.Wear eye protection to guardfrom battery acid, compressedsprings, fluids under pressureand flying debris when enginesare running or tools are used.Use eye protection approved fortype of welding.Keep engine cover closed exceptfor service. Close and latchengine cover before operatingthe backhoe loader.

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1-3 B730, B750 & B780 Service Manual

CONTENTS

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-01

LUBRICATION AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-01

HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-01

ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-01

AXLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-01

TRANSMISSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-01

ENGINE SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70-01

ALPHABETICAL INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INDEX-01

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10-01 B730, B750 & B780 Service Manual

GENERAL INFORMATION

MACHINE INFOMRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1B730 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1B750 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-3B780 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-5

TECHNICAL PROPERTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1B730 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1Axle / Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-2Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-2Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-2Backhoe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-2Cab / Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-2Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-3Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-3Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-3B750 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-4Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-4Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-4Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-4Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-4Axle / Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Backhoe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Cab / Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-5Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-6Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-6B780 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-7Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-7Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-7Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-7Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-7Axle / Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Backhoe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Cab / Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-8Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-9Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-9

MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1

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10-02 B730, B750 & B780 Service Manual

POSITION OF MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1Loader Attachment Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1Backhoe Attachment Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1

SAFETY INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-1General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-2Crushing And Burning Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-3Fire And Explosion Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-3Hydraulic Lines And Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-4

STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-1Preparing The Machine For Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60-1Preparing The Machine For Work After A Long Period Of Storage . . . . . . . . . . . . . 10-60-1

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10-10-1 B730, B750 & B780 Service Manual

MACHINE INFOMRATION

B730 Specification

These are backhoe loaders that are designed with operating weight up to 8.2 tons, rigid frame, bucket capacity of 0.2m³ and shovel capacity of 1.1 m³. This machine is designed to dig and load in closed and open terrain.

WARNING: Because of exhaust gas, use the machine only in well ventilated areas.

A Overall Machine Length In Travel Position 5950 mm (234.25 in) F Machine Height In Travel Position 3900 mm (153.54 in)

B Wheelbase 2180 mm (85.83 in) G Machine Width 2280 mm (89.76 in)

C Backhoe Swing Center Distance 1300 mm (51.18 in) H Overall Width With Bucket 2280 mm (89.76 in)

D Minimum Machine Height 380 mm (14.96 in) J Rear Wheel Track 1770 mm (69.68 in)

E Cab Height 2900 mm (114.17 in) K Front Wheel Track 1895 mm (74.61 in)

S45423

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10-10-2 B730, B750 & B780 Service Manual

MACHINE INFOMRATION (CONT’D)

B730 Specification (Cont’d)

S45424

Retracted Extended

A Maximum Dig Depth 4600 mm (181.10 in) 5800 mm (228.35 in) I Distance Between Hinge Pin And Front Axle Center

1220mm (48.03 in)

B Max Reach From Rear Axle Center 7000mm (275.59 in) 8100 mm (318.90 in) J Max Rollback Angle, Fully Raised 59.2°

C Max Reach From Swing Center 5700 mm (224.41 in) 6800 mm (267.72 in) K Dump Height 2810 mm (110.63 in)

D Maximum Digging Height 5600 mm (220.47 in) 6450 mm (253.94 in) L Loadover Height 3280 mm (129.13 in)

E Maximum Dumping Height 3850 mm (151.57 in) 4700 mm (185.04 in) M Height To Hinge Pin 3520 mm (138.58 in)

F Loading Reach 1800 mm (70.87 in) 2650 mm (104.33 in) N Max Reach At Full Height 1070 mm (42.13 in)

G Bucket Rotation Angle 200.4° 200.4° O Dumping Reach 620 mm (24.41 in)

H Max Bucket Hinge Pin Height 4750 mm (187.01 in) 5550 mm (218.50 in) P Digging Depth 115 mm (4.53 in)

R Dump Angle 45°

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10-10-3 B730, B750 & B780 Service Manual

MACHINE INFOMRATION (CONT’D)

B750 Specification

These are backhoe loaders that are designed with operating weight up to 8.2 tons, rigid frame, bucket capacity of 0.2m³ and shovel capacity of 1.1 m³. This machine is designed to dig and load in closed and open terrain.

S45423

A Overall Machine Length In Travel Position 6100 mm (240.16 in) F Machine Height In Travel Position 3900 mm (153.54 in)

B Wheelbase 2180 mm (85.83 in) G Machine Width 2280 mm (89.76 in)

C Backhoe Swing Center Distance 1300 mm (51.18 in) H Overall Width With Bucket 2280 mm (89.76 in)

D Minimum Machine Height 400 mm (15.75 in) J Rear Wheel Track 1770 mm (69.68 in)

E Cab Height 2900 mm (11.17 in) K Front Wheel Track 1820 mm (71.65 in)

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10-10-4 B730, B750 & B780 Service Manual

MACHINE INFOMRATION (CONT’D)

B750 Specification (Cont’d)

S45424

Retracted Extended

A Maximum Dig Depth 4600 mm (181.10 in) 5800 mm (228.35 in) I Distance Between Hinge Pin And Front Axle Center

1460mm (57.48 in)

B Max Reach From Rear Axle Center 7000mm (275.59 in) 8100 mm (318.90 in) J Max Rollback Angle, Fully Raised

59.2°

C Max Reach From Swing Center 5700 mm (224.41 in) 6800 mm (267.72 in) K Dump Height 2950 mm (116.14 in)

D Maximum Digging Height 5600 mm (220.47 in) 6450 mm (253.94 in) L Loadover Height 3370 mm (132.68 in)

E Maximum Dumping Height 3850 mm (151.57 in) 4700 mm (185.04 in) M Height To Hinge Pin 3670 mm (144.49 in)

F Loading Reach 1800 mm (70.87 in) 2650 mm (104.33 in) N Max Reach At Full Height 1125 mm (44.29 in)

G Bucket Rotation Angle 200.4° 200.4° O Dumping Reach 685 mm (24.41 in)

H Max Bucket Hinge Pin Height 4750 mm (187.01 in) 5550 mm (218.50 in) P Digging Depth 113 mm (4.45 in)

R Dump Angle 45°

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10-10-5 B730, B750 & B780 Service Manual

MACHINE INFOMRATION (CONT’D)

B780 Specification

These are backhoe loaders that are designed with operating weight up to 8.7 tons, rigid frame, bucket capacity of 0.2m³ and shovel capacity of 1.1 m³. This machine is designed to dig and load in closed and open terrain

S45425

A Overall Machine Length In Travel Position 6375 mm (250.98 in) F Machine Height In Travel Position 3880 mm (152.76 in)

B Wheelbase 2223 mm (87.52 in) G Machine Width 2400 mm (94.49 in)

C Backhoe Swing Center Distance 1355 mm (53.35 in) H Overall Width With Bucket 2400 mm (94.49 in)

D Minimum Machine Height 385 mm (15.16 in) J Rear Wheel Track 1950 mm (76.77 in)

E Cab Height 2930 mm (71.65 in) K Front Wheel Track 1950 mm (76.77 in)

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10-10-6 B730, B750 & B780 Service Manual

MACHINE INFOMRATION (CONT’D)

B780 Specification (Cont’d)

S45426

Retracted Extended

A Maximum Dig Depth 4600 mm (181.10 in) 5800 mm (228.35 in) I Distance Between Hinge Pin And Front Axle Center

1550 mm (61.02 in)

B Max Reach From Rear Axle Center 7000mm (275.59 in) 8100 mm (318.90 in) J Max Rollback Angle, Fully Raised

59.2°

C Max Reach From Swing Center 5700 mm (224.41 in) 6800 mm (267.72 in) K Dump Height 2865 mm (112.79 in)

D Maximum Digging Height 5600 mm (220.47 in) 6450 mm (253.94 in) L Loadover Height 3450 mm (135.83 in)

E Maximum Dumping Height 3850 mm (151.57 in) 4700 mm (185.04 in) M Height To Hinge Pin 3590 mm (141.34 in)

F Loading Reach 1800 mm (70.87 in) 2650 mm (104.33 in) N Max Reach At Full Height 1620 mm (63.78 in)

G Bucket Rotation Angle 200.4° 200.4° O Dumping Reach 595 mm (23.43 in)

H Max Bucket Hinge Pin Height 4750 mm (187.01 in) 5550 mm (218.50 in) P Digging Depth 117 mm (4.61 in)

R Dump Angle 45°

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10-20-1 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES

B730 Specifications

Engine

Electrical System

Hydraulic System

Transmission

Make & Model PERKINS 1104C-44T

Emission Type Tier II

Engine Type 4 Stroke diesel, Turbocharged

Engine Power 74.5 kW/ 100 hp

Rated Speed 2200 rpm

Displacement 4.4 L (268.5 ci)

Bore And Stroke 105 x 127 mm (4.13 x 5.00 in)

Number Of Cylinder 4

Maximum Torque 408 N•m (300.92 ft-lb)

Cooling Water cooled

Battery 12 volt / 120 Ah

Starter 3,2 kW (4.3 hp)

Alternator 75A

Type Open center

Hydraulic Pump Tandem Gear

Maximum Flow 90 + 64 Lpm (23.78 + 16.91 gpm)

Maximum Pressure 22000 kPa (220 bar) (3191 psi)

Hydraulic Oil Filter Full flow filter in return line with integrated fine filter area

Hydraulic Oil Cooler Hydraulic and transmission oil cooler

Hydraulic Controls

Backhoe Control

Loader ControlMechanical control lever

Mechanical control lever

Make ZF

Drive 4 Wheel Drive

Type Powershift

2WD / 4WD Selection By switch on dash panel

Transmission Disconnect Push button and brake system

Travel Speeds

1st

2nd

3rd

4th

Forward Reverse

6,5 km/h (4.0 mph) 7,0 km/h (4.4 mph)

11 km/h (6.8 mph) 12 km/h (7.5 mph)

26 km/h (16.2 mph) 30 km/h (18.6 mph)

40 km/h (24.9 mph)

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10-20-2 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B730 Specifications (Cont’d)

Axle / Brakes

Tires

Loader

Backhoe

Cab / Canopy

Type (Front and Rear) ZF

Front Axle Oscillation 20 degrees

Steering angle 52 degrees

Rear Axle Electro-hydraulic operated differential lock, outboard planetary design, self-adjusting high torque internal wet service brake

Service Brake Type Hydraulic wet multi - disc

Parking Brake Type Mechanical control on rear axle

Front 2WD / 4WD - standard 12.5 - 18

Rear - standard 16.9 - 28

Bucket capacity 1.1 m³ (1.4 y³)

Breakout force - lift 81,5 kN (118322 lbf)

Breakout force shovel maximum 60,5 kN (13601 lbf)

Bucket width 2280 mm (69.76 in)

Lift height to hinge pin 3520 mm (138.58 in)

ROC (ISO 14397-1) Bucket Application

3413 kg (7524 lb)

Maximum bucket break - out force 59,1 kN (13277 lbf)

Bucket capacity 0.2 m³ (0.26 y³)

Bucket width 600 mm (23.62 in)

Arm tear - out

Retracted

Extended (With Optional extendable arm)31,8 kN (7140 lbf)

22,4 kN (5033 lbf)

Cab ROPS (ISO 3741) and FOPS (ISO 3449 Level II) type tinted safety glass giving total visibility, full opening rear-side windows, front and rear windshield wipers, fully adjustable front/rear and up/

down seat, Fresh air heater/blower, full heat control

Canopy ROPS (ISO 3741) and FOPS (ISO 3449 Level II), fully adjustable front/rear and up/down seat.

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10-20-3 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B730 Specifications (Cont’d)

Steering

Capacities

Weights

Steering type 2 wheel hydraulic

Power steering Hydrostatic

Turning circle - outer front tire clearance 9500 mm (31.2 ft)

Turning circle - outer bucket clearance 12,320 mm (40.4 ft)

MAXIMUM CAPACITY SERVICE CAPACITY

Engine oil (with filters) 8.4 l (8.9 qt) 8.0 l (8.5 qt)

Cooling system 25,0 l (6.6 U.S. gal) 25,0 l (6.6 U.S. gal)

Fuel tank 140,0 l (37 U.S. gal) 140,0 l (37 U.S. gal)

Hydraulic tank 75,0 l (19.8 U.S. gal) 90,0 l (23.8 U.S. gal)

Hydraulic system 130,0 l (34.3 U.S. gal) 130,0 l (34.3 U.S. gal)

Transmission 19,0 l (5.0 U.S. gal) 14,0 - 16 l (3.7 - 4.2 U.S. gal)

Axle oil

Front

Rear8,0 l (8.5 qt) 5,5 l (5.8 qt)

16,0 l (4.2 U.S. gal) 9,0 l (2.4 U.S. gal)

Brake oil 0,4 l (0.42 qt) 0,4 l (0.42 qt)

Operating Weight 7800 kg (17196 lb)

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10-20-4 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B750 Specifications

Engine

Electrical System

Hydraulic System

Transmission

Make & Model PERKINS 1104C-44T

Emission Type Tier II

Engine Type 4 Stroke diesel, Turbocharged

Engine Power 74.5 kW/ 100 hp

Rated Speed 2200 rpm

Displacement 4.4 L (268.5 ci)

Bore And Stroke 105 x 127 mm (4.13 x 5.00 in)

Number Of Cylinder 4

Maximum Torque 408 N•m (300.92 ft-lb)

Cooling Water cooled

Battery 12 volt / 120 Ah

Starter 3,2 kW (4.3 hp)

Alternator 75A

Type Open Center

Hydraulic Pump Tandem Gear

Maximum Flow 90 + 64 Lpm (23.78 + 16.91 gpm)

Maximum Pressure 22000 kPa (220 bar) (3191 psi)

Hydraulic Oil Filter Full flow filter in return line with integrated fine filter area

Hydraulic Oil Cooler Hydraulic and transmission oil cooler

Hydraulic Controls

Backhoe Control

Loader ControlPilot controls

Pilot controls

Make ZF

Drive 4 Wheel Drive

2WD / 4WD Selection By switch on dash panel

Type Powershift

Transmission disconnect Push button and brake system

Travel Speeds

1st

2nd

3rd

4th

Forward Reverse

6,5 km/h (4.0 mph) 7,0 km/h (4.4 mph)

11 km/h (6.8 mph) 12 km/h (7.5 mph)

26 km/h (16.2 mph) 30 km/h (18.6 mph)

40 km/h (24.9 mph)

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10-20-5 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B750 Specifications (Cont’d)

Axle / Brakes

Tires

Loader

Backhoe

Cab / Canopy

Steering

Type ZF

Front Oscillation 20 degrees

Steering angle 52 degrees

Rear Axle Electro-hydraulic operated differential lock, outboard planetary design, self-adjusting high torque internal wet service brake

Service Brake Type Hydraulic wet multi - disc

Parking Brake Type Mechanical control on rear axle

Front 4WD - standard 14.5 - 20

Rear 4WD - standard 16,9 - 28

Shovel capacity 1,1 m³ (1.4 y³)

Breakout force - lift 56,1 kN (12612 lbf)

Breakout force shovel maximum 81,6 kN (18344 lbf)

Bucket width 2280 mm (89.76 in)

Lift height to hinge pin 3670 mm (144.49 in)

ROC (ISO 14397-1) Bucket Application 2905.5 kg (6505 lb)

Maximum bucket breakout 59,1 kN (13277 lbf)

Arm breakout force

Retracted

Extended (with optional extendable arm)31,8 kN (7140 lbf)

22,4 kN (5036 lbf)

Bucket capacity 0,2 m³ (0.26 y³)

Bucket width 600 mm (23.62 in)

Cab ROPS (ISO 3741) and FOPS (ISO 3449 Level II) type tinted safety glass giving total visibility, full opening rear-side windows, front and rear windshield wipers, fully adjustable front/rear and up/

down seat, Fresh air heater/blower, full heat control

Canopy ROPS (ISO 3741) and FOPS (ISO 3449 Level II), fully adjustable front/rear and up/down seat.

Steering type 2 wheel steer hydrostatic

Power steering Hydrostatic

Turning circle - outer front tire clearance 12,170 mm (39.9 ft)

Turning circle - outer bucket clearance 14,600 mm (47.9 ft)

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10-20-6 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B750 Specifications (Cont’d)

Capacities

Weights

MAXIMUM CAPACITY SERVICE CAPACITY

Engine oil (with filters) 8.4 l (8.9 qt) 8.0 l (8.5 qt)

Cooling system 25,0 l (6.6 U.S. gal) 25,0 l (6.6 U.S. gal)

Fuel tank 140,0 l (37 U.S. gal) 140,0 l (37 U.S. gal)

Hydraulic tank 75,0 l (19.8 U.S. gal) 90,0 l (23.8 U.S. gal)

Hydraulic system 130,0 l (34.3 U.S. gal) 130,0 l (34.3 U.S. gal)

Transmission 19,0 l (5.0 U.S. gal) 14,0 - 16 l (3.7 - 4.2 U.S. gal)

Axle oil

Front

Rear8,0 l (8.5 qt) 5,5 l (5.8 qt)

16,0 l (4.2 U.S. gal) 9,0 l (2.4 U.S. gal)

Brake oil 0,4 l (0.42 qt) 0,4 l (0.42 qt)

Operating Weight 8000 kg (17637 lb)

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Thank you very much for your reading. Please Click Here. Then Get COMPLETE MANUAL. NO WAITING

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10-20-7 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B780 Specifications

Engine

Electrical System

Hydraulic System

Transmission

Make & Model PERKINS 1104C-44T

Emission Type Tier II

Engine Type 4 Stroke diesel, Turbocharged

Engine Power 74.5 kW/ 100 hp

Rated Speed 2200 rpm

Displacement 4.4 L (268.5 ci)

Bore And Stroke 105 x 127 mm (4.13 x 5.00 in)

Number Of Cylinder 4

Maximum Torque 408 N•m (300.92 ft-lb)

Cooling Water cooled

Battery 12 volt / 120 Ah

Starter 3,2 kW (4.3 hp)

Alternator 75A

Type Open Center

Hydraulic Pump Tandem Gear

Maximum Flow 90 + 64 Lpm (23.78 + 16.91 gpm)

Maximum Pressure 22000 kPa (220 bar) (3191 psi)

Hydraulic Oil Filter Full flow filter in return line with integrated fine filter area

Hydraulic Oil Cooler Hydraulic and transmission oil cooler

Hydraulic Controls

Backhoe Control

Loader ControlPilot controls

Pilot controls

Make Carraro

Drive All Wheel Drive (AWD)

2WD / 4WD Selection By switch on dash panel

Type Auto Powershift

Transmission disconnect Push button and brake system

Travel Speeds

1st

2nd

3rd

4th

Forward Reverse

5,8 km/h (3.6 mph) 5,8 km/h (3.6 mph)

9,6 km/h (6.0 mph) 9,6 km/h (6.0 mph)

21,2 km/h (13.17 mph) 21, 2 km/h (13.17 mph)

40 km/h (24.9 mph) 40 km/h (24.9 mph)

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10-20-8 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B780 Specifications (Cont’d)

Axle / Brakes

Tires

Loader

Backhoe

Cab / Canopy

Steering

Type Carraro

Front Oscillation 16 degrees

Steering angle 52 degrees

Rear Axle Electro-hydraulic operated differential, outboard planetary design,self-adjusting high torque internal wet service brake

Service Brake Type Hydraulic wet multi - disc

Parking Brake Type Mechanical control on rear axle

Front 4WD-standard 16.9 - 28

Rear 4WD-standard 16.9 - 28

Bucket capacity 1,1 m³ (1.4 y³)

Breakout force - lift 56,1 kN (12612 lbf)

Breakout force bucket maximum 81,6 kN (18344 lbf)

Bucket width 2400 mm (89.76 in)

Lift height to hinge pin 3590 mm (141.34 in)

ROC (ISO 14397-1) Bucket Application

3122 kg (6883 lb)

Maximum bucket breakout 59,1 kN (13277 lbf)

Arm break out

Retracted

Extended (with optional extendable arm)31,8 kN (7140 lbf)

22,4 kN (5036 lbf)

Bucket capacity 0,2 m³ (0.26 y³)

Bucket width 600 mm (23.62 in)

Cab ROPS (ISO 3741) and FOPS (ISO 3449 Level II) type tinted safety glass giving total visibility, full opening rear-side windows, front and rear windshield wipers, fully adjustable front/rear and up/

down seat, Fresh air heater/blower, full heat control

Canopy ROPS (ISO 3741) and FOPS (ISO 3449 Level II), fully adjustable front/rear and up/down seat.

Steering type 4 wheel steer hydrostatic (2WS, 4WS, Crab)

Power steering Hydrostatic

Turning circle - outer front tire clearance 11,700 mm (38.4 ft)

Turning circle - outer bucket clearance 11,240 mm (36.9 ft)

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10-20-9 B730, B750 & B780 Service Manual

TECHNICAL PROPERTIES (CONT’D)

B780 Specifications (Cont’d)

Capacities

Weights

MAXIMUM CAPACITY SERVICE CAPACITY

Engine oil (with filters) 8.4 l (8.9 qt) 8.0 l (8.5 qt)

Cooling system 25,0 l (6.6 U.S. gal) 25,0 l (6.6 U.S. gal)

Fuel tank 140,0 l (37 U.S. gal) 140,0 l (37 U.S. gal)

Hydraulic tank 75,0 l (19.8 U.S. gal) 90,0 l (23.8 U.S. gal)

Hydraulic system 130,0 l (34.3 U.S. gal) 130,0 l (34.3 U.S. gal)

Transmission 19,0 l (5.0 U.S. gal) 18,0 l (4.8 U.S. gal)

Axle oil

Front

Rear11,5 l (3.0 U.S. gal) 7,0 l (7.4 qt)

16,0 l (4.2 U.S. gal) 9,0 - 10 l (2.4 - 2.6 U.S. gal)

Brake oil 0,4 l (0.42 qt) 0,4 l (0.42 qt)

Operating Weight 8700 kg (19180 lb)

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10-30-1 B730, B750 & B780 Service Manual

MAIN COMPONENTS

[A] - Roll Over Protective Structure (ROPS) per ISO 3471 and Falling Over Protective Structure (FOPS) per ISO 3449,Level II.

[B] - Several different buckets and other attachments are available for the Bobcat backhoe loader.

1 OPERATOR’S CAB (WITH ROPS / FOPS) [A] 11 BACKHOE ARM

2 LOADER BUCKET 12 BACKHOE BOOM

3 LIFT ARM 13 BACKHOE ATTACHMENT SIDESHIFT CARRIAGE

4 FRONT AXLE 14 STABILIZERS

5 REAR AXLE 15 HYDRAULIC OIL TANK

6 FUEL TANK 16 BATTERY BOX

7 BACKHOE BUCKET [B] 17 ENGINE BONNET

8 WORK LIGHTS 18 APPROVED LIFT ARM SUPPORT DEVICE

9 MIRRORS 19 BOOM LOCKOUT

10 TIRES 20 BUCKET LINK

1

2

3

4

5

1516

18

17

8 9

9

8

NA9989

NA99906

7

11

12

1410

20

1310 14

198

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MAINTENANCE SAFETYCONTENTSGENERAL INFORMATIONMACHINE INFOMRATIONB730 SpecificationB750 SpecificationB780 Specification

TECHNICAL PROPERTIESB730 SpecificationsEngineElectrical SystemHydraulic SystemTransmissionAxle / BrakesTiresLoaderBackhoeCab / CanopySteeringCapacitiesWeightsB750 SpecificationsEngineElectrical SystemHydraulic SystemTransmissionAxle / BrakesTiresLoaderBackhoeCab / CanopySteeringCapacitiesWeightsB780 SpecificationsEngineElectrical SystemHydraulic SystemTransmissionAxle / BrakesTiresLoaderBackhoeCab / CanopySteeringCapacitiesWeights

POSITION OF MACHINELoader Attachment PositionBackhoe Attachment Position

SAFETY INSTRUCTIONGeneral Safety InformationCrushing And Burning PreventionFire And Explosion PreventionHydraulic Lines And Hoses

STORAGEPreparing The Machine For StoragePreparing The Machine For Work After A Long Period Of Storage

LUBRICATION AND MAINTENANCELIFTING AND BLOCKING THE BACKHOE LOADERProcedure

APPROVED LIFT ARM SUPPORT DEVICEDescription

TOWING THE BACKHOE LOADERProcedure

AXLE TOE-IN ADJUSTMENTProcedure

LUBRICATIONGeneral Safety InformationLubricant And Operating Materials SpecificationsDiesel FuelEngine CoolantHydraulic FluidBrake OilTransmission FluidFront Axle OilRear Axle OilLubrication Chart (B730 & B750)Lubrication Chart (B780)Diesel EngineChecking The Engine Oil LevelDraining The Engine OilReplace The Oil Filter ElementAdding Engine OilCooling SystemChecking The Coolant LevelChanging The CoolantDraining CoolantClean The Radiator And Adding CoolantClean The Oil Cooler And The RadiatorHydraulic SystemCheck Hydraulic Oil LevelTo Drain OilTo Replace The Return FilterReplacing The Internal Hydraulic FilterTo Clean The Suction StrainerAdding Hydraulic OilThe Fuel SystemFuel SpecificationsBiodiesel Blend FuelDrain The Contaminant From The Fuel FilterDrain The Contaminant From The Fuel TankClean Fuel Tank BreatherReplace The Fuel Filter ElementsAdding FuelTransmission SystemChecking Transmission Oil LevelDraining Transmission OilReplace The Transmission Filter ElementsAdd Transmission OilFront Drive Axle And Reduction GearsTo Drain OilTo Add OilReduction GearsTo Check Reduction Gear Oil LevelTo Drain Reduction Gear OilAdding Reduction Gear OilRear AxleChecking Rear Axle Oil LevelCleaning The Rear Axle BreatherDraining Rear Axle OilAdding Rear Axle OilBrake FluidChecking Brake Fluid Reservoir LevelAdding Brake FluidBleeding The Brake SystemService Schedule

AIR CLEANER SERVICEEngine Air Intake SystemCleaning The Primary ElementReplacing The Air Filter ElementsCab Air Intake Filter

BACKHOE BOOM / SWING LOCKEngaging And Disengaging

ENGINE ALTERNATOR / FAN BELT AND AIR CONDITIONER BELT (IF EQUIPPED)Replacing Fan And Alternator Belt

TIRE MAINTENANCEType Of TiresTo Replace A WheelWheel Nut Torque Settings

LUBRICATING THE BACKHOE LOADERLubrication Locations

HYDRAULIC SYSTEMHYDRAULIC / HYDROSTATIC SCHEMATICSHYDRAULIC SYSTEM INFORMATIONGlossary Of Hydraulic / Hydrostatic Symbols

HYDRAULIC SYSTEMTests and Hydraulic Pressure Test (B730)Tests and Hydraulic Pressure Test (B750)Tests and Hydraulic Pressure Test (B780)Test PortsHydraulic Tank And Return FilterFixed Displacement Tandem PumpBlocksON-OFF Solenoid ValveON-OFF Pressure Reducing ValveLoader Control ValveUnloading Valve TestSteering Priority ValveBackhoe Control ValveSteering Pressure TestPilot Pressure Test (B750) And (B780)

HYDRAULIC CYLINDERSBasic Type Cylinder AssemblyNut Type Cylinder MontageLoader Lift CylinderLoader Bucket (Tilt) CylinderClampshell CylinderBackhoe Boom CylinderBackhoe Arm CylinderBackhoe Bucket CylinderBackhoe Extendible Arm CylinderBackhoe Swing CylinderBackhoe Stabilizer Cylinder

ELECTRICAL SYSTEMELECTRICAL SCHEMATICSELECTRICAL SYSTEM - B730FusesRelays

ELECTRICAL SYSTEM - B750FusesRelays

ELECTRICAL SYSTEM - B780FusesRelays

ELECTRICAL SYSTEMComponent LocationComponent Location - ZF In B730 & B750Component Location - Carraro In B780

AXLESSAFTEY INSTRUCTIONSGeneral Safety Recommendations

FRONT AXLE - B730 AND B750DescriptionDisassemblyReassembly

FRONT AXLE - B780DescriptionTightening TorqueSteering Cylinder Group DisassemblySteering Cylinder Group AssemblyEpicyclic Reduction Gear Group DisassemblyEpicyclic Reduction Gear Group AssemblyWheel Hub Group DisassemblyWheel Hub Group AssemblyAxle Beam Group DisassemblyAxle Beam Group AssemblyFlange Group DisassemblyFlange Group AssemblyDifferential Support Group DisassemblyDifferential Support Group AssemblyDifferential Group DisassemblyDifferential Group AssemblyPinion Group DisassemblyPinion Group AssemblyToe-in / Steering AngleSteering Angle AdjustmentTesting After Assembly

SAFETY INSTRUCTIONSGeneral Safety Recommendations

REAR AXLE - B730 AND B750PrefaceLubrication And Maintenance InstructionsService Brake - Brake Wear Measurement On The ZF- Axle MT-B 3070Instructions For The Displacement Resp. Emergency Towing Of The VehicleTechnical DataDisassembly - Output UnitService Brake (Multi Disc Brake)DifferentialDisassembly - InputDisassembly - Parking Brake “Multi-Disc Brake”Disassembly - Parking Brake “Disc Brake”Reassembly - InputReassembly - DifferentialAssembly Service Brake (Multi-Disc Brake)Reassembly - Output UnitParking Brake Version “Multi-Disc Brake”Reassembly of Parking Brake version “Disc Brake”Completion Of Axle

REAR AXLE - B780DescriptionTightening TorqueSteering Cylinder Group DisassemblySteering Cylinder Group AssemblyEpicyclic Reduction Gear Group DisassemblyEpicyclic Reduction Gear Group AssemblyWheel Hub Group DisassemblyWheel Hub Group AssemblyParking Brake Group DisassemblyParking Brake Group AssemblyParking Brake CaliperAxle Beam Trumpet Group DisassemblyAxle Beam Trumpet Group AssemblyBrake GroupBrake Group DisassemblyBrake Group AssemblyDifferential Support Group DisassemblyDifferential Support Group AssemblyDifferential Group DisassemblyDifferential Group AssemblyDifferential LockDifferential Locking Group DisassemblyDifferential Locking Group AssemblyPinion Group DisassemblyPinion Group AssemblyToe-In/Steering AngleSteering Angle AdjustmentTesting After Assembly

SERVICE BRAKEDescriptionBleeding The Brake Circuitry

TRANSMISSIONMANUAL USEMaintenanceRepairAgreements And DefinitionsTypographic AgreementsMeasurementsGeneral DescriptionRecommendations For Repair OperationsTransmission Installation On The Machine

SAFETY INSTRUCTIONSGeneral Safety Recommendations

TRANSMISSION - B730 AND B750Serial Number Plate LocationPrefaceGeneralSchematicsMeasuring Points For Pressure Oil And TemperatureSolenoid / Gear ActivationHydraulic SchematicDisassemblyReassembly

TRANSMISSION - B780Component LocationTightening TorqueHydraulic SchematicMain Hydraulic ComponentsKinematic SchemePlugs And Filters DisassemblyPlugs And Filters AssemblyTorque Converter And Oil Pump DisassemblyTorque Converter And Oil Pump AssemblyHydraulic Control Valve DisassemblyHydraulic Control Valve AssemblyHydraulic System Pipes DisassemblyHydraulic System Pipes AssemblyTransmission Housing DisassemblyTransmission Housing AssemblyShafts A - D DisassemblyShafts A - D AssemblyAxis B DisassemblyAxis B AssemblyAxis C DisassemblyAxis C AssemblyAxis E DisassemblyAxis E Assembly

ENGINE SERVICEGENERAL INFORMATIONIntroductionEngine ViewsEngine IdentificationSafety PrecautionsEngine Lift EquipmentViton SealsPOWERPART Recommended Consumable Products

SPECIFICATIONSBasic Engine DataData And DimensionsThread SealantStandard Torque ValuesSpecific Torque ValuesCompression Test Data

CYLINDER HEADGeneral DescriptionAtomiser CoverRocker CoverRocker ArmValve Tip ClearancesValve SpringsRemovalInstallationValve And Valve SpringsValve GuidesInspection And To Correct

PISTON AND CONNECTING ROD ASSEMBLIESGeneral DescriptionBig End BearingPiston And Connecting RodPiston RingsPiston And Connecting Rod AssemblyPiston And Piston RingsConnecting RodPartially Finished Small End BushPiston Cooling Jets

CRANKSHAFT ASSEMBLYGeneral DescriptionCrankshaft PulleyRear End Oil Seal AssemblyTo Remove And To Fit A Wear SleeveThrust WashersMain BearingsCrankshaftBalancer Unit

TIMING CASE AND DRIVE ASSEMBLYGeneral DescriptionTiming CoverMechanical Fuel Pump GearElectronic Fuel Pump GearIdler Gear and HubHeavy Duty Idler GearCamshaft GearFront Oil SealTiming CaseCrankshaft GearCamshaft and Tappets

CYLINDER BLOCK ASSEMBLYGeneral DescriptionCylinder BlockCylinder Bore

ENGINE TIMINGGeneral DescriptionTo Set Number 1 Piston To TDC On The Compression StrokeTo Check The Timing Of The Bosch VP30 Fuel Injection PumpTo Check The Timing Of The Bosch EPVE Fuel Injection PumpTo Adjust The Timing Of The Bosch EPVE Fuel Injection PumpTo Check The Timing Of The Delphi DP210 Fuel Injection PumpTo Check The Valve Timing

ASPERATION SYSTEMGeneral DescriptionExhaust ElbowTurbocharger Side MountTurbocharger FaultsOpen Engine BreatherNatural Aspirated Engine BreatherClosed Engine Breather

LUBRICATION SYSTEMGeneral DescriptionLubrication System Flow DiagramCanister Type Oil FilterElement Type Oil FilterFilter HeadSumpDipstick TubeOil Strainer And Suction PipeLubricating Oil Pump AssemblyRelief Valve

FUEL SYSTEMGeneral DescriptionCold Start Advance Unit (KSB)Typical Fuel SystemFuel Filter AssemblyAtomizersFuel Lift Pump And Filter AssemblyRemoving Air From The Fuel SystemBosch VP30 Fuel Injection PumpBosch EVPE Fuel Injection PumpDelphi DP210 Fuel Injection Pump

COOLING SYSTEMGeneral DescriptionCoolant Flow DiagramThermostatCoolant PumpFanFan DriveLubricating Oil CoolerCoolant By-Pass Pipe

FLYWHEEL AND HOUSINGGeneral DescriptionFlywheelRing GearFlywheel Housing

ELECTRICAL SYSTEMGeneral DescriptionAlternatorStarting Aid (Glow Plug)Electrical ComponentsEngine Control Module (ECM)Voltage Load Protection ModuleProgramming A New ECMSpeed And Timing SensorPressure SensorTemperature SensorWiring Harness

AUXILIARY EQUIPMENTPower Steering PumpAdaptor For A Hydraulic Pump Or A Steering PumpExhauster

SPECIAL TOOLSList Of Special Tools

ALPHABETICAL INDEX