TYM T723 Tractor Service & Repair Manual

TRACTORS T723 SERVICE MANUAL Chapter 1. Introduction ------------------------------------ Chapter 2. Disassembly and reassembly of major point ----- Chapter 3. Engine accessories ----------------------------------- Chapter 4. Clutch 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 12. Cabin --------------------------------------------------- Chapter 13. Conversion table-------------------------------------- 01 02 03 04 05 06 07 08 09 10 11 12 13

Chapter 1 .Introduction This tractor service manual is for qualified service personnel engaged in servicing and overhauling T723 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. Manufacturer reserves 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. A stream 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 Serious hazard with a very high level of risk of either serious injury or death Hazard or unsafe practice that can lead to severe injury or death. Hazard or unsafe practice that can lead in injury or death. Instructions for the correct operation of the machine which, if followed, will ensure that it performs at it’s best 1-4 DANGER WARNING CAUTION IMPORTANT

SAFETY SIGNS SIGNAL WORDS. A signal 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. 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 or 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. 1-5 RECOGNIZE SAFETY INFORMATION This symbol, Safety-Alert Symbol, means ATTENTION! YOUR SAFETY IS INVOLVED. The message that follows the symbol contains important information about safety. Carefully read the message DANGER WARNING CAUTION

PRECAUTION TO AVOID TIPPING Do not drive where the Tractor could slip or tip. Stay alert for holes and rocks in the terrain, and other hidden hazards. Slow down before you make a sharp turn. Driving forward out of a ditch or mired condition could cause Tractor to tip over backward. Back out of these situations if possible PARK TRACTOR SAFELY Before working on the Tractor ; Lower all equipment to the ground. Stop the engine and remove the key KEEP RIDERS OFF TRACTOR Do not allow riders on the Tractor. Riders on Tractor are subject to injury such as being stuck by foreign objects and being thrown off of the Tractor 1-6 USE OF ROPS AND SEAT BELT The Roll over Protection Structure (ROPS) has been certified to industry and/or government standards. Any damage or alternation to the ROPS, mounting hardware, or seat belt voids the certification and will reduce or eliminate protection for the operator in the event of a roll-over. The ROPS, mounting hardware, and seat belt should be checked every service for any evidence of damage, wear or cracks. In the event of damage or alteration, the ROPS must be replaced prior to further operation of the Tractor. The seat belt must be worn during machine operation when the machine is equipped with a certified ROPS. Failure to do so will reduce or eliminate protection for the operator in the event of a roll-over.

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. STAY CLEAR 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 1-7 PRACTICE SAFE MAINTENANCE Understand service procedures before doing work. Keep the surrounding area of the Tractor clean and dry. Do not attempt to service the 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. Let the tractor cool before any repair work is done 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 the battery ground cable (-) before making adjustments on electrical systems or welding on the Tractor.

1-8 AVOID HIGH-PRESSURE FLUIDS Escaping fluid under pressure can penetrate the skin causing serious injury. Keep hands and body away from pinholes and nozzles, which eject fluids under high pressure. If ANY fluid is injected into the skin. Consult your doctor immediately. PREVENT BATTERY EXPLOSIONS Keep sparks, lighted matches, and open flame away from the top of the battery. Battery gas can explode. Never check battery charge level by placing a metal object across the poles. PREVENT ACID BURNS Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, cause holes in clothing and cause blindness if found entry into eyes. For adequate safety always; 1.Fill batteries in a well-ventilated area. 2.Wear eye protection and acid proof hand gloves 3. Avoid breathing direct fumes when electrolyte is added. 4. Do not add water to electrolyte as it may splash off causing severe burns. If you spill acid on yourself; 1.Flush your skin with water. 2.Flush your eyes with water for 10-15 minutes. Get medical attention immediately. SERVICE TRACTOR SAFELY Do not wear a necktie, scarf or loose clothing when you work near moving parts. If these items were to get caught, severe injury could result. Remove rings and other jeweler to prevent electrical shorts and entanglement in moving parts.

1-9 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 in the engaged position causing the Tractor to runaway and cause serious injury to the people standing nearby the tractor. 2 .For additional safety keep the pull to stop knob (were fitted)(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 the 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. Only Authorized 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. WORK IN VENTILATED AREA Do not start the Tractor in an enclosed building unless the doors & windows are open for proper ventilation, as tractor fumes can cause sickness or death. If it is necessary to run an engine in an enclosed area remove the exhaust fumes by connecting an exhaust pipe extension which vents the fumes outside the enclosed area. Caution Using external control Stand well clear of the rear linkage and implements when using the hitch remote switches or injury can result from moving parts.

TYM T723 Tractor Service & Repair Manual

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