AGCO Challenger MT255B Service Manual
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AGCO Challenger MT255B Service Manual

AGCO Challenger MT255B Service Manual

Standard compact tractor
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®
Challenger
MT255B
Standard Compact Tractor
SERVICE MANUAL
79024234 A Rev.
CONTENTS
INTRODUCTION.....................................................................................................................................................01
GENERAL INFORMATION ....................................................................................................................................02
DISASSEMBLY ......................................................................................................................................................03
ENGINE ............................................................................................................................................................... 04A
ENGINE ACCESSORIES .................................................................................................................................... 04B
CLUTCH .................................................................................................................................................................05
TRANSMISSION.....................................................................................................................................................06
REAR TRANSMISSION..........................................................................................................................................07
REAR AXLE HOUSING .........................................................................................................................................08
FRONT AXLE .........................................................................................................................................................09
HYDRAULIC ...........................................................................................................................................................10
STEERING SYSTEM ..............................................................................................................................................11
ELECTRICAL .........................................................................................................................................................12
LUBRICATION AND MAINTENANCE ...................................................................................................................13
© AGCO Corporation, 2006 All rights reserved.
Part Number 79024234 A Rev. (English)
Printed in U.S.A.
November 2006

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Summary of Contents for AGCO Challenger MT255B

  • Page 1: Table Of Contents

    CLUTCH .................................05 TRANSMISSION..............................06 REAR TRANSMISSION............................07 REAR AXLE HOUSING ............................08 FRONT AXLE .................................09 HYDRAULIC ................................10 STEERING SYSTEM ..............................11 ELECTRICAL .................................12 LUBRICATION AND MAINTENANCE ........................13 © AGCO Corporation, 2006 All rights reserved. Part Number 79024234 A Rev. (English) Printed in U.S.A. November 2006...
  • Page 2 Contents ® Challenger MT255B Standard Compact Tractor SERVICE MANUAL 79024234 A Rev. 01 - Introduction Contents INTRODUCTION General Information ............................01-1 INDEX ................................01-3 79024234 A Rev. 01-i Find manuals at https://best-manuals.com...
  • Page 3 Contents NOTES 01-ii 79024234 A Rev. Find manuals at https://best-manuals.com...

  • Page 4: Introduction

    Figures mentioned in this manual are standard values established by AGCO, Massey Ferguson and Challenger for the Tractor, consequently when a non-AGCO / Massey Ferguson / Challenger part has been installed on the machine or adjustments and repairs have been made in a manner other than as specified in this manual, the pertinent values mentioned herein are no longer valid.
  • Page 5 Introduction NOTES 01-2 79024234 A Rev. Find manuals at https://best-manuals.com...
  • Page 6 Index INDEX General Information ..........01-1 79024234 A Rev. 01-3 Find manuals at https://best-manuals.com...
  • Page 7 Index NOTES 01-4 79024234 A Rev. Find manuals at https://best-manuals.com...

  • Page 8: 02 - General Information

    Contents ® Challenger MT255B Standard Compact Tractor SERVICE MANUAL 79024234 A Rev. 02 - General Information Contents GENERAL INFORMATION Tractor Type and Other Identification Markings ..................... 02-1 Tractor, Engine Model, and Respective Serial Numbers ................02-2 Specifications ..............................02-3 General Dimensions ............................02-5 General Precautions for Separation and Reinstallation .................
  • Page 9 Contents NOTES 02-ii 79024234 A Rev. Find manuals at https://best-manuals.com...

  • Page 10: General Information

    General Information GENERAL INFORMATION TRACTOR TYPE AND OTHER IDENTIFICATION MARKINGS i-9686b FIG. 1 FIG. 1: Identification markings: Tractor serial number Chassis serial number Engine information 79024234 A Rev. 02-1 Find manuals at https://best-manuals.com...

  • Page 11: Tractor, Engine Model, And Respective Serial Numbers

    General Information TRACTOR, ENGINE MODEL, AND RESPECTIVE SERIAL NUMBERS FIGS. 2–3–4: Each tractor is identified by means of the tractor model and serial numbers. As a further identification, the engine and chassis are also provided with identification numbers. They are provided as shown. I6090 FIG.

  • Page 12: Engine

    General Information SPECIFICATIONS These specifications are subject to change without notice. Engine Make..................................ISEKI Diesel Model ................................E3CF-VB27 Type............................. Indirect injection, overhead valve Displacement ........................... 1.463 lit. (89.3 cu in) Number of cylinders................................3 Bore ................................86 mm (3.385”) Stroke................................84 mm (3.307”) Engine horsepower (net) @ engine revolution min (rpm) ...................27.6 / 2500 PTO horsepower (estimate) .........................

  • Page 13: Front Axle

    General Information Power Take-Off (PTO) Control................................Lever and pedal Rear PTO shaft......................35 mm (1.375 in) diameter - six spline Output ................................ Clockwise rotation Speeds @ engine rpm ............................540 @ 2327 Mid PTO (accessory) shaft..................... 25 mm (1”) diameter 15 spline Output ..............................

  • Page 14: General Dimensions

    General Information GENERAL DIMENSIONS i-9553 FIG. 5 General Dimensions Turf 1528, ST28A, MT255B Front - 25x8.50-14 Front - 24x8.50-14 Front - 25x8.50-14 Rear - 12.50/80-18 Rear - 36x13.50-15 Rear - 12.50/80-18 Height to Steering Wheel 1400 mm (55.1 in) 1395 mm (54.9 in) 1400 mm (55.1 in) Overall Height to ROPS 2050 mm (80.7 in)

  • Page 15: General Precautions For Separation And Reinstallation

    • When replacing parts, use authorized, genuine hole. AGCO / Massey Ferguson / Challenger parts only. AGCO / Massey Ferguson / Challenger assumes no • When oil seals are installed, there should be no responsibility for accidents, operating problems or turnover of the lips nor dislocation of the springs.
  • Page 16 General Information FIG. 6: Snap-rings Snap-ring installers should be designed so as not to permanently deform the snap-rings. Installed snap-rings should be seated securely in the groove. Be careful not to overload the snap-ring to the extent that it is permanently deformed. How to install the snap-ring: When installing a snap-ring, install it as shown in the figure with its round edge side turned toward the part to...
  • Page 17 General Information Bolts and Nuts • Special bolts are installed at several locations, so be sure not to interchange them with other bolts. • Bolts and nuts should be tightened to their specified torque with a torque wrench. • When locking the bolts or nuts with wire or a lock washer, be sure to wind the wire paying sufficient attention to its winding direction and bend the lock washer for secure locking.

  • Page 18: Speed And Reduction Ratios

    General Information SPEED AND REDUCTION RATIOS D-8179a FIG. 9 FIG. 9: Traveling speeds shown. 79024234 A Rev. 02-9...

  • Page 19: Tires

    General Information Tires FRONT REAR Size D (mm) Size D (mm) A (Agri tires) 25 x 8.50 - 14 12.50/80 - 18 B (R4) 25 x 8.50 - 14 12.50/80 - 18 C (Turf tires) 24 x 8.50 - 14 36 x 13.50 - 15 PTO Speeds &...
  • Page 20 General Information NOTE: Above torques are for rigid joints, or joints The following conditions will require a torque value meeting the following conditions: different than stated before. 1. Damage will not occur to joined members of 1. Reduced torque required; non-parallel clamping an assembly.
  • Page 21 General Information NOTES 02-12 79024234 A Rev.

  • Page 22: Index

    Index INDEX Before Operation ..........02-6 Dimensions ............02-5 General Precautions for Separation and Reinstallation ......02-6 Precautions To Be Followed When Installing Common Parts ........02-6 PTO Speeds & Reduction Ratio ......02-10 Serial Numbers ............ 02-2 Specifications ............02-3 Speed and Reduction Ratios .......
  • Page 23 Index NOTES 02-14 79024234 A Rev.
  • Page 24 Contents ® Challenger MT255B Standard Compact Tractor SERVICE MANUAL 79024234 A Rev. 03 - Disassembly Contents DISASSEMBLY OF MAJOR COMPONENTS Disassembly of Functional Blocks ......................... 03-1 Hood Release ..............................03-2 Removing/Reinstalling Side Covers ......................03-2 Hood and Front Grill ..........................03-3 Seat, Fenders, Floor Deck, and Related parts ....................
  • Page 25 Contents NOTES 03-ii 79024234 A Rev.
  • Page 26 Disassembly of Major Components DISASSEMBLY OF MAJOR COMPONENTS DISASSEMBLY OF FUNCTIONAL BLOCKS I-6729 FIG. 1 FIG. 1: Major components of the tractor can be disassembled and reassembled as shown in the following chart. 1. Exterior parts • Engine hood and front grille •...
  • Page 27 Disassembly of Major Components HOOD RELEASE FIG. 2: To release the hood, move the open/close lever (1) in the direction shown by the arrow. Open the hood by grasping and lifting up the front of the hood (2) fully until locking the stand of the hood. i-9546 FIG.
  • Page 28 Disassembly of Major Components Hood and Front Grill FIG. 5: Open hood. Unplug headlight wires. I-10357 FIG. 5 FIG. 6: Unpin hood support (1) at the engine bracket. I-10358 FIG. 6 FIG. 7: Remove clip (1) and washer. Remove hood off pins.
  • Page 29 Disassembly of Major Components FIG. 8: Remove bolts from the screen and remove the screen. MFC8164 FIG. 8 Roll Over Protective structure (ROPS) CAUTION: ROPS (Roll-Over Protective Structure) must be installed. Refer to the procedure that follows. The ROPS frame is shipped disassembled. Two upright legs and hardware are located in a separate box at the front of the tractor.
  • Page 30 Disassembly of Major Components FIG. 10: Position the U-frame (1) on top of the legs and install the shoulder bolts (2) at the rear of the frame with washers, lock washers and nuts to the inside. Install the clevis pin and lynch pins (3) at the front of the frame, with lynch pins to the inside.
  • Page 31 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

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