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TYM T273 HST - User Manual

TYM T273 HST
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TYM
TYMTYM
TYM
Service manual
for tractors
Model T233 T273
#604-9, Namsan-dong, Changwon-city, Kyungnam, Korea ■
■■
■TEL:82-55-279-4379, FAX:82-55-279-4447 ■
■■
■www.tym.co.kr

Table of Contents

Questions and Answers

  • Y
    Yolanda GallagherAug 8, 2025
    Why is my TYM T273 HST overheating?
    • A
      Alexander SawyerAug 8, 2025
      If your TYM Tractor is overheating, several issues could be the cause. Check for a low coolant level and replenish it, inspecting for water leaks. A fatigued pressure valve spring could be the culprit, requiring a radiator cap replacement. Inspect the fan belt for looseness, breakage, or oiliness; adjust or replace as needed. Other potential causes include a faulty thermostat (replace it), a poor water pump or water leaks (repair or replace), clogged water passages (clean the radiator and water passages), improper injection timing (adjust it), clogged air ways (clean the radiator exterior), or fuel gas entering the water jacket due to a broken cylinder gasket (inspect the cylinder head and replace the cylinder gasket).
  • A
    Angela SingletonAug 15, 2025
    What to do if my TYM Tractor is losing coolant?
    • R
      Robert BrewerAug 15, 2025
      If you are losing coolant in your TYM Tractor, it could be due to several reasons. A leaking radiator, loosely clamped or broken water hose, or a leaking water pump are potential causes; repair or replace the affected parts. Additionally, a fatigued pressure valve spring might be the issue, necessitating a radiator cap replacement. Water leakage through the cylinder head gasket or a cracked cylinder head or body could also lead to coolant loss; inspect the cylinder head, replace the gasket, or replace the cracked parts.
  • C
    Cory NguyenAug 23, 2025
    Why is my TYM T273 HST Tractor overcooling?
    • A
      Audrey HallAug 23, 2025
      Your TYM Tractor might be overcooling due to a poor thermostat, which requires replacement. Alternatively, excessively low atmospheric temperatures can cause overcooling; decrease the radiator working area by radiator masking.
  • D
    Darrell RobertsonAug 31, 2025
    How to fix a noisy cooling fan in my TYM Tractor?
    • S
      Stephanie Gray MDAug 31, 2025
      A noisy cooling fan in your TYM Tractor can stem from several issues. It might be caused by a poor water pump bearing (replace it), a loose or bent fan (retighten or replace it), an unbalanced fan (replace it), or a poor fan belt (replace it).

Summary

Chapter 1. Introduction

SAFETY INTRODUCTION

SECTION 2. SPECIFICATIONS

Detailed technical specifications for the T233 HST and T273 HST tractor models.

Chapter 2. Disassembly and reassembly of major components

SECTION 3. SEPARATION OF MAJOR COMPONENTS

1.SEPARATION OF THE FRONT AXLE AND AXLE BRACKET

Detailed procedure for separating the front axle and axle bracket.

2.SEPARATION OF THE ENGINE AND THE FRONT AXLE BRACKET

Procedure for separating the engine from the front axle bracket.

3.SEPARATION OF THE ENGINE AND THE TRANSMISSION.

Steps for separating the engine from the transmission.

4.SEPARATION OF THE TRANSMISSION AND REAR AXLE HOUSING

Procedure for separating the transmission and rear axle housing.

5.SEPARATION OF THE TRANSMISSION AND MID PTO GEARS

Instructions for separating the transmission and MID PTO gears.

6.SEPARATION OF THE TRANSMISSION AND CYLINDER CASE

Procedure for separating the transmission and cylinder case.

Chapter 3. ENGINE ACCESSORIES

8. TROUBLE SHOOTING

Troubleshooting guide for common radiator and cooling system problems.

5.ELEMENT INSTALLATION

CHAPTER 4. HST system

SECTION 1. SPECIFICATIONS

Technical specifications related to the HST system.

SECTION 3. TROUBLE SHOOTING

Troubleshooting guide for common HST system problems.

SECTION 4. DIAGNOSTICS

SECTION 6. TESTS AND ADJUSTMENT

Procedures for testing and adjusting the HST system.

SECTION 7. REPAIR

Detailed repair procedures for the HST system components.

1.HYDROSTATIC PEDAL AND NEUTRAL ADJUSTMENT

Steps for adjusting the hydrostatic pedal and ensuring neutral position.

2. HYDROSTATIC PUMP PRESSURE TEST

Procedure for testing the hydrostatic pump pressure.

3.CHARGE PUMP PRESSURE TEST

Procedure for testing the charge pump pressure.

4. HYDRAULIC SYSTEM BLEED PROCEDURE

SECTION 7. REPAIR

1.TRACTOR SPLITTING (FRONT)

Step-by-step guide for splitting the tractor into front and rear sections.

2. HYDRAULIC TRANSMISSION REMOVAL & INSTALLATION

Procedures for removing and installing the hydraulic transmission.

1. Hydrostatic Transmission Disassembly

Detailed steps for disassembling the hydrostatic transmission.

2. Hydrostatic Transmission Inspection

CHAPTER 5. Transmission

CHAPTER 6. FRONT AXLE(4 WD)

SECTION 4. TROUBLE SHOOTING

CHAPTER 7. Rear axle and brakes

SECTION 3.DISASSEMBLY,INSPECTION,AND REASSEMBLY

SECTION 4.TROUBLE SHOOTING

Chapter 8. Power assisted steering system

SECTION 4.DISASSEMBLY,INSPECTION,AND REASSEMBLY

SECTION 5. TROUBLESHOOTING

Chapter 9 Hydraulic system

SECTION 3. MAJOR COMPONENT OF THE HYDRAULIC SYSTEM

SECTION 5.HYDRAULIC SYSTEM

SECTION 6. SERVICE INSTRUCTION

TYM T273 HST Specifications

General IconGeneral
Engine Power27 hp
TransmissionHydrostatic (HST)
Drive4WD
SteeringHydrostatic power
Fuel Capacity6.6 gallons
3-Point HitchCategory 1
Hydraulic Remotes1

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