TYM T303HST Manual de instrucciones

TYM

WORKSHOP MANUAL

FOR

TRACTORS

(T303HST/T353HST)

#604-9, Namsan-dong, Changwon-city, Kyungnam, Korea ■

■■

■TEL:82-55-279-4379,FAX:82-55-279-4447■

■■

■www.tym.co.kr

HST TRACTOR

T303HST/T353HST

WORKSHOP MANUAL

Chapter 1. Introduction ------------------------------------

Chapter 2. Disassembly and reassembly of major point ------

Chapter 3. Engine accessories ------------------------------------

Chapter 4. HST system ---------------------------------------------

Chapter 5. Transmission -----------------------------------

Chapter 6. Front axle (4WD) ---------------------------------

Chapter 7. Rear axle and Brakes ---------------------------------

Chapter 8. Power steering system---------------------------------

Chapter 9. Hydraulic system --------------------------------------

Chapter 10. Electric accessories and instruments ----------

Chapter 11. Service standard and other information -----

Chapter 1

Introduction

INTRODUCTION--------------------------------------------------------------

SAFETY INTRODUCTION-------------------------------------------------

WARNING SIGNS IN THIS MANUAL----------------------------------

SAFETY SIGNS----------------------------------------------------------------

SAFETY DECALS-----------------------------------------------------------

UNIVERSALSYMBOLS---------------------------------------------------

SECTION 1. TRACTOR TYPESAND PUNCHED

IDENTIFICATION MARKS -----------------------------

SECTION 2. SPECIFICATIONS------------------------------------------

SECTION 3. GEAR TRAIN DIAGRAMS-------------------------------

1-1

1-2

1-5

1-6

1-11

1-14

1-15

1-17

1-20

SECTION 4. PRECAUTIONS FOR TRACTOR OPERATIONS---

1. INSTRUMENTS -------------------------------------------------------

2. CONTROLS -----------------------------------------------------------

3. FILLING DIAGRAM AND CAPACITY TABLE---------------

4. MAINTENANCE CHART -------------------------------------------

1-21

1-23

1-24

1-25

Chapter 1 .Introduction

This tractor Workshop manual is for qualified service personnel engaged in

servicing and overhauling T303HST/T353HST tractor.Use of this publication is not

recommended for field operators since they usually do not have access to special

tools and shop equipment essential for most servicing.

Servicing procedures outlined herein contain sufficient information to return all

component parts of a tractor to new condition. In discussion of each component

parts,it is assumed that a complete overhaul is been performed,consequently,

complete disassembly and reassembly are outlined.The mechanic is relied upon to

decide how far disassembly must be carried when complete overhaul is not required.

Study unfamiliar service procedures thoroughly and clearly understood before

attempting disassembly. Specific data essential for proper overhaul,such as running

clearances and torque values,have been provided in interline of Inspection and

reassembly procedures of each group section.

This manual was compiled from latest information available at time of publication.

Manufacturerreserves the right to make changes at any time without notice.

Whenever the terms "left"and "right" are used, They means as viewed by the

operator when seated in the operator's seat.

1-1

SAFETY INSTRUCTION

ALWAYS PRACTICE SAFETY BY THINKING BEFORE ACTION

AVOID FIRE HAZARDS.

-Keep fire extinguishers easily available and in good operating condition.

All relevant personnel should know how to operate fire fighting equipment.

-Keep a first aid kit in an easily accessible location.

-Do not smoke while handling fuel,or other highly flammable material.

-Do not use an open pail for transporting fuel.

-Use of an approved fuel container.

-Dispose of all fuel-soaked rags in covered containers where cigarettes cannot be dropped

carelessly.

-Do not smoke and avoid open flame when charging,jumping,or boosting batteries.

-Batteries give off gas which is flammable and explosive.

-Do not charge batteries in a closed area. Provide proper ventilation to avoid explosion of

accumulated gases.

Avoid acid burns.

-Wear safety goggles when handling battery electrolyte.It contains sulfuric acid which is a poison

and can cause blindness.Avoid it contacting eyes,skin,or clothing. sulfuric acid will eat through

clothing and can cause severe burns to skin.

AVOID HIGH-PRESSURE FLUIDS

1) Before beginning work on hydraulic system components,turn off engine and operate hydraulic

control levers to relieve internal hydraulic pressure.

2) Oil under pressure can penetrate skin and lead to personal injury.Treat sources of oil pressure

with extreme care,wearing safety goggles.

3) If hydraulic leak develops,correct immediately.Escaping hydraulic oil can have extremely high

pressure. Astream of high pressure oil may easily penetrate skin just like modern needless

vaccination equipment,but with the exception that hydraulic fluid may cause blood poisoning.

It is imperative that connections are tight and that all lines and pipes should be in good condition.

If injured by escaping hydraulic fluid,see a doctor at once.

1-2

STAY CLEAR OF PTO

1) Entanglement in rotating drive line can cause serious injury or death.

2) Keep tractor master shield and drive line shield in place at all times except for special applications

as directed in the implement operator's manual.

3) Wear fairly tight tight fitting clothing.Stop the engine and be sure PTO driveline is stopped before

making adjustment,connections,or cleaning out PTO drive equipment.

SERVICE TIRES SAFELY

-Tire changing can be dangerous and should be done by trained personnel using proper tools and

equipment.

-Do not re-inflate a tire that has been run flat or seriously under-inflated.Have it checked by qualified

personnel.

-Use wheel handling equipment adequate for weight involved when removing and installing wheels.

1-3

WARNING SIGNS IN THIS MANUAL

The following warning symbols in this manual draw additional attention to items of importance

for the safe and correct operation of the tractor.

SIGN MEANING OF SIGN

DANGER

Serious hazard with a very high level of risk of

either serious injury or death

WARNING

Hazard or unsafe practice that can lead to severe

injury or death.

CAUTION

Hazard or unsafe practice that can lead in injury

or death.

1-5

CAUTION

IMPORTANT

Instructions for the correct operation of the

machine which, if followed, will ensure that it

performs at it’s best

SAFETY SIGNS

SIGNALWORDS.

Asignal word―DANGER, WARNING OR CAUTION―is used

with safety alert symbol. DANGER identifies the most serious

hazards. Safety signs with signal Word ―DANGER OR

WARNING―are typically near specific hazards. General

precautions are listed on CAUTION safety signs.

DANGER

WARNING

CAUTION

READ SAFETY INSTRUCTION

Carefully read all safety instructions given in this manual for your

safety. Tempering with any of the safety devices can cause serious

injuries or death. Keep all safety signs in good condition. Replace

missing

damaged

safety

signs

RECOGNIZE SAFETY INFORMATION

This symbol, Safety-Alert Symbol, meansATTENTION!YOUR

SAFETY IS INVOLVED.

The message that follows the symbol contains important information

about safety. Carefully read the message

missing

damaged

safety

signs

Keep your tractor in proper condition and do not allow any

unauthorized modifications to be carried out on the Tractor, which

may impair the function/safety and affect Tractor life.

PROTECTION CHILDREN

Keep children and others away from the Tractor while operating.

BEFORE YOU REVERSE

- Look behind Tractor for children.

- Do not let children to ride on Tractor or any implement.

1-6

HANDLE FUEL SAFELY-AVOID FIRES

Handle fuel with care; it is highly flammable. Do not refuel the

Tractor while smoking or near open flame or sparks.

Always stop engine before refueling Tractors.

Always keep your tractor clean of accumulated grease, and

debris. Always clean up spilled fuel.

STAYCLEAR OF ROTATING SHAFTS

Entanglement in rotating shaft can cause serious injury or death.

Keep PTO shield in place at all times.

Wear close fitting clothing. Stop the engine and be sure PTO drive is

stopped before making adjustments, connections, or cleaning out

PTO driven equipment.

ALWAYS USE SAFETY LIGHTS AND DEVICES

Use of hazard warning lights and turn signals are recommended

when towing equipment on public roads unless prohibited by state or

local regulations.

Use slow moving vehicle (SMV) sign when driving on public road

during both day & night time, unless prohibited by law

PRACTICE SAFE MAINTENANCE

Understand service procedure before doing work.

Keep the surrounding area of the Tractor clean and dry.

Do not attempt to service Tractor when it is in motion.

Keep body and clothing away from rotating shafts.

Always lower equipment to the ground. Stop the engine.

Remove the key. Allow Tractor to cool before any work repair is

caused on it.

Securely support any Tractor elements that must be raised for service

work.

Keep all parts in good condition and properly installed.

Replace worn or broken parts. Replace damage/missing decals.

Remove any buildup of grease or oil from the Tractor.

Disconnect battery ground cable(−) before making adjustments on

electrical systems or welding on Tractor

1-7

Safety Starter Switch is to be replaced after every 2000 hours/4 years, whichever is

earlier

TRACTOR RUNAWAY

1.The tractor can start even if the transmission is engaged position causing Tractor to runaway

and serious injury to the people standing nearby the tractor.

For additional safety keep the pull to stop knob (fuel shut off control) in fully pulled out position.

Transmission in neutral position, Foot brake engaged and PTO lever in disengaged position

while attending to Safety Starter Switch or any other work on Tractor.

SAFETY STARTER SWITCH

1. Clutch operated safety switch is provided on all Tractors which allow the starting system to

become operational only when the Clutch pedal is fully pressed.

2. Do not By-pass this safety starter switch or work on it. OnlyAuthorized Dealers are

recommended to work on safety starter switch.

3. On some models Safety Starter switch is provided on transmission High-low shifter lever and

in PTO shifter lever.The tractor can be started only if High-low shifter lever is in neutral

position.

earlier

1-8

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