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79024230 A Rev.

01-i

Contents

Challenger

MT255B

Hydrostatic Compact Tractor

SERVICE MANUAL

79024230 A Rev.

01 - General Information

Contents

GENERAL INFORMATION

Tractor Types and Punched Identification Marks .......................................................................................... 01-1

Name Plate .............................................................................................................................................. 01-2
Specifications .......................................................................................................................................... 01-3
1528 / ST28A / MT255B

4WD .................................................................................................................................................. 01-3

Traveling Speeds .................................................................................................................................... 01-7

General Precautions for Separation and Re-Installation ............................................................................... 01-8

Before Operation ..................................................................................................................................... 01-8
Precautions to be Followed When Installing Common Parts .................................................................. 01-8

INDEX ............................................................................................................................................................. 01-11

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Содержание Challenger MT255B

Страница 1: ...r 2006 Challenger MT255B Hydrostatic Compact Tractor SERVICE MANUAL 79024230 A Rev CONTENTS GENERAL INFORMATION 01 SPLITTING THE TRACTOR 02 ENGINE 03A ENGINE ACCESSORIES 03B TRANSMISSION 04 HYDROSTATIC TRANSMISSION 05 FRONT AXLE 06 REAR AXLE HOUSING 07 STEERING 08 HYDRAULICS 09 ELECTRICAL ACCESSORIES 10 ...

Страница 2: ...L INFORMATION Tractor Types and Punched Identification Marks 01 1 Name Plate 01 2 Specifications 01 3 1528 ST28A MT255B 4WD 01 3 Traveling Speeds 01 7 General Precautions for Separation and Re Installation 01 8 Before Operation 01 8 Precautions to be Followed When Installing Common Parts 01 8 INDEX 01 11 Find manuals at https best manuals com ...

Страница 3: ...01 ii 79024230ARev Contents Find manuals at https best manuals com ...

Страница 4: ...DENTIFICATION MARKS FIG 1 Shown is the Model name plate 1 Punched model name and serial number 2 is on the right side of the frame Cast engine model name and punched engine serial number 3 on the right side wall the cylinder block FIG 1 i 9686b 2 3 1 Find manuals at https best manuals com ...

Страница 5: ...ev Name Plate FIG 2 Model name plate FH HST transmission 4WD M Mid PTO D Dual clutch R ISEKI ROPS optional E41 Agri tires FIG 3 Engine model and serial number FIG 2 i 9063 i 9751 i 9394 FIG 3 i 9753 Find manuals at https best manuals com ...

Страница 6: ...o the top of ROPS 2050 80 7 Wheel base 1665 65 6 Wheel tread Front 6 14 960 37 8 Rear 12 4 16 1096 43 2 Minimum ground clearance under PTO bottom 200 7 9 Minimum turning radius without brake 5600 220 5 Weight with Rops and Seat lb kg 1000 2204 6 1005 2215 6 1100 2423 ENGINE Make Iseki Diesel Model E3CF VB22 E3CD VB32 Type Water cooled 4 cycle 3 cylinder Diesel Indirect injection overhead valve Asp...

Страница 7: ...PTO RPM Firing Order 1 3 2 Compression Ratio 21 7 to 1 Combustion chamber type Swirl type Low Idle Speed rpm 930 970 980 1020 High Idle Speed rpm 2650 2750 2760 2860 Valve Clearance Cold Intake mm inch 0 35 0 014 Valve Clearance Cold Exhaust mm inch 0 35 0 014 Air Cleaner Single stage dry element Engine Cooling Liquid forced circulation Starting method Starter motor with pre heater Cold Starting A...

Страница 8: ...ler hitch 3 point hitch category Category 1 Self control Position OPT draft control Lift capacity at the ball ends of lower links kg lb 1100 2425 Power Take Off PTO Type Independent engine driven Control Electro hydraulic control Clutch Hydraulically engaged multi plate wet disk Rear PTO Shaft mm inch 35 1 375 diameter six spline Output Clockwise rotation PTO Speed engine rpm 581 2500 604 2600 Hyd...

Страница 9: ...F 18 582 cca Charging 40 amp alternator with internal regulator rectifier Capacities Engine crankcase with filter U S qts liters 3 6 3 8 5 0 5 3 Transmission U S gals liters 7 7 29 0 Fuel tank U S gals liters 30 0 l 7 9 gal Cooling system U S qts liters 5 5 5 8 Front drive axle U S qts liters 4 5 4 7 1528 ST28A MT255B 4WD 1531 ST33A 4WD Find manuals at https best manuals com ...

Страница 10: ...ral type rear tires 36 x 13 5 15 turf and 12 5 80 18 R 4 tires Shift Position 1528 ST28A MT255B 1531 ST33A Range mph kph mph kph mph kph mph kph Tire Turf Ag Turf Ag Forward Hydrostatic 3 12 5 02 3 27 5 26 3 25 5 22 3 40 5 47 6 72 10 81 7 04 11 32 6 99 11 25 7 32 11 78 12 51 20 13 13 10 21 08 13 01 20 93 13 62 21 92 Reverse Hydrostatic 2 19 3 52 2 29 3 68 2 27 3 66 2 38 3 83 4 70 7 57 4 93 7 93 4 ...

Страница 11: ...Ball Bearings When a bearing is fitted in by the outer race use an installer which is specially designed to push only the outer race and vice versa The installer must be designed to install the bearing on the shaft in a parallel position When installing a bearing which appears the same on both sides install it so that the face which has the identification number faces in a direction for easy visua...

Страница 12: ... shown with its round edge side 2 turned toward the part to be retained This round edge is formed when the snap ring is pressed out Spring Roll Pins FIG 5 Spring pins should be driven in properly and tightly Spring pins should be installed so that their seams should face the direction from which the load is applied The roll pins installed in the transmission or other parts where much force is appl...

Страница 13: ...ts and nuts refer to the tightening torque table Grease Fittings After installation each grease fitting should be filled with grease When installing grease fittings of types B and C be sure to turn the fitting tips in a direction that will provide easy access for a grease gun Other Precautions Be sure not to damage any finished surfaces or parts Always refrain from forcing installation Each lever ...

Страница 14: ...ware 01 10 N Name Plate 01 2 O Oil Seals 01 8 O Rings 01 8 Other Precautions 01 10 P Precautions to be Followed When Installing Common Parts 01 8 Precautions Other 01 10 R Roller or Ball Bearings 01 8 S Separation and Re Installation General Precautions 01 8 Snap Rings 01 9 Specifications 01 3 Speeds 01 7 Spring Roll Pins 01 9 T Tractor Types and Punched Identification Marks 01 1 ...

Страница 15: ...01 12 79024230ARev Index NOTES ...

Страница 16: ...r Deck and Related parts 02 4 Remove the Exterior parts as a Set 02 9 Radiator 02 12 Separation of Engine from Front Transmission 02 12 Removal of Engine 02 15 Separation of Front Transmission Case from Middle Transmission Case 02 15 Separation of Middle Transmission Case from Rear Transmission Case 02 17 Separation of Rear Axle Housing from Rear Transmission Case 02 18 Removal of Cylinder Case 02...

Страница 17: ...02 ii 79024230ARev Contents NOTES ...

Страница 18: ...when the lever is pressed m CAUTION Make sure the lock pin of the stand is placed in notch 2 when opening the hood If pin is not placed in notch hood may fall down suddenly Removing Reinstalling Side Covers FIG 3 When the top of a side cover 1 pulled out with the hood open the lock can be disengaged Remove a side cover by slipping the cover off the two hinges on the bottom When reinstalling a side...

Страница 19: ...02 2 79024230ARev Hood and Front Grill FIG 4 Open hood Unplug headlight wires FIG 5 Unpin hood support 1 at the engine bracket FIG 6 Remove clip 1 and washer Remove hood off pins FIG 4 I 10357 FIG 5 I 10358 1 FIG 6 I 10358 1 ...

Страница 20: ...79024230 A Rev 02 3 Splitting the Tractor FIG 7 Remove bolts from the screen and remove the screen FIG 7 MFC8164 ...

Страница 21: ...r mat Remove four bolts and remove center cover Disconnect the wiring harness for seat switch Remove bolts that fixing the seat panel then shift the seat panel forward for avoiding mid PTO lever and 4WD lever and remove it with the seat FIG 9 Remove HST pedal 1 Remove floor decks LH and RH 2 Disconnect the couplers of wiring harness for combination lamps FIG 10 Remove four bolts per one side total...

Страница 22: ... and remove column cover forward and rearward FIG 13 Remove six screws and disconnect couplers for related wiring harness And remove the rear cover FIG 14 The coupler for main switch has a rubber boot for waterproofing When disconnecting the coupler pull the boot off from main switch in advance FIG 11 1 2 i 9760 FIG 12 i 9761 FIG 13 i 9762 FIG 14 i 9763 ...

Страница 23: ... Remove two bolts per one side total four bolts 2 and remove the engine hood stay FIG 17 Disconnect the throttle cable 1 and 2 Disconnect couplers from relays and release the wiring harness from clamp bands Refer to the figure WIRING HARNESS LAYOUT FIG 18 Close the fuel cock 1 and disconnect the fuel hose between the fuel filter and the fuel pump FIG 15 1 1 i 9764 FIG 16 1 2 i 9765 FIG 17 2 1 i 97...

Страница 24: ...ydraulic hose which connects the orbit roll with the charge filter FIG 20 Disconnect power steering hoses at the cylinder side 1 and 2 Release hoses from clamps FIG 21 Remove fixing bolts and remove the steering post assembly with the fuel tank Remove a seat belt Remove the rear panel FIG 22 Disconnect the hand brake wire FIG 19 1 i 9768 FIG 20 1 2 i 9770 FIG 21 i 9771 FIG 22 i 9772 ...

Страница 25: ...9024230ARev FIG 23 Remove the front rubber mounting bolt 1 FIG 24 Remove the floor frame fixing bolts 1 Remove the floor frame FIG 25 Remove rear mount fixing bolts Remove lower frame FIG 23 i 9773 1 FIG 24 1 i 9774 FIG 25 i 9775 ...

Страница 26: ...e wire cable Disconnect and release the related wiring harness with reference to WIRING HARNESS RAYOUT Remove the lowering speed control knob and the differential lock lever Remove the center cover Remove the sheet panel with the seat Remove the hydraulic control link assembly FIG 26 Remove the floor decks Disconnect the hand brake wire Close the fuel cock located on the fuel filter Disconnect the...

Страница 27: ... oil cooler FIG 29 Disconnect power steering hoses at the cylinder side Release hoses from clamps Disconnect the brake rods FIG 30 Remove the snap ring 1 spring pin and springs then remove the brake pedal 2 FIG 31 Remove the snap ring 1 and slide the PTO lever 2 outside FIG 28 i 9778 1 FIG 29 i 9779 FIG 30 2 1 i 9781 FIG 31 1 2 i 9782 ...

Страница 28: ... Remove the neutral switch 1 Remove front mount fixing bolts LH and RH Remove rear mount fixing bolts LH and RH FIG 33 Lift up the frame set gradually making sure that all related wirings pipes and links are disconnected FIG 32 1 i 9783 FIG 33 i 9784 ...

Страница 29: ... the setting bolts from the fun shroud 4 and shift it behind the fan Lift the radiator upward SEPARATION OF ENGINE FROM FRONT TRANSMISSION Remove the engine hood front grille etc ahead of time referring to 1 HOOD AND FRONT GRILLE Disconnect the negative cable from the battery Loosen clamp bolt holding telescoping the 4WD shaft cover FIG 35 Telescope the 4WD shaft cover and slide it to expose coupl...

Страница 30: ...rs forward on shaft and remove shaft Drain transmission oil FIG 37 Remove the suction pipe FIG 38 Remove the delivery pipe FIG 39 Disconnect hydraulic hoses for power steering from the power steering cylinder FIG 36 i 9787 FIG 37 i 9788 FIG 38 i 9789 FIG 39 i 9790 ...

Страница 31: ...This as a preview PDF file from best manuals com Download full PDF manual at best manuals com ...

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