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What are the general safety practices to follow when performing maintenance on the JOHN DEERE JD640?
Specific safety procedures should always be observed, whether servicing or making repairs on the skidder. Remembering these in time can prevent an injury or save your life.
Do not perform any work on the skidder unless authorized to do so. Then be sure you understand the services required. Follow recommended procedures.
Never service the equipment while it is being operated.
What are the precautions to take to avoid fire hazards when maintaining the JOHN DEERE JD640?
Do not smoke while refueling.
Do not smoke while handling highly flammable material.
Engine should be shut off when refueling.
Use care in refueling if the engine is hot.
Do not use open pans of gasoline or diesel fuel for cleaning parts. Good commercial, nonflammable solvents are preferred.
Provide adequate ventilation when charging batteries.
Do not check battery charge by placing metal objects across the posts.
Do not allow sparks or open flame near batteries.
Do not smoke near battery.
Never check fuel, battery electrolyte or coolant levels with an open flame.
Never use an open flame to look for leaks anywhere on the equipment.
Never use an open flame as a light anywhere on or around the equipment.
Know where fire extinguishers are kept!
What should be done regarding clothing and accessories when working on the JOHN DEERE JD640?
ALWAYS AVOID loose clothing or any accessory-flopping cuffs, dangling neckties and scarves, or rings and wrist watches-that can catch in moving parts and put you out of work.
What safety equipment might be required when working on the JOHN DEERE JD640?
Consult your shop supervisor for specific instructions on a job, and the safety equipment required. For instance, you may need: Hard hat, safety shoes, safety goggles, heavy gloves, reflector vests, ear protectors, respirators.
What precautions should be taken before servicing, adjusting, or repairing the JOHN DEERE JD640 with attachments?
Before servicing, adjusting, or repairing skidders which have attachments such as blades, grapple tongs, etc.-LOWER attachments to the ground-or, if necessary to raise them for access to certain parts, SECURELY SUPPORT by external means.
DO NOT rely on controls to support or position attachments for maintenance.
Never allow ANYONE to walk under equipment that is raised and not properly blocked.
What safety measures should be observed if the JOHN DEERE JD640 is on an incline?
If the skidder is on an incline, block it securely.
What is the correct procedure when using hoisting equipment to lift heavy parts on the JOHN DEERE JD640?
Use hoisting equipment for lifting heavy parts, TAKE CARE! WATCH OUT FOR OTHER PEOPLE IN THE VICINITY.
What caution must be used when removing radiator caps, drain plugs, grease fittings, or hydraulic pressure caps on the JOHN DEERE JD640?
Use extreme caution in removing radiator caps, drain plugs, grease fittings, or hydraulic pressure caps.
What safety equipment should be worn when drilling, grinding, or hammering metal on the JOHN DEERE JD640?
Wear safety glasses when drilling, grinding, or hammering metal.
What is the procedure for checking engine coolant temperature on the JOHN DEERE JD640?
Engine coolant gets hot! Don’t remove the radiator cap until coolant temperature is below the boiling point. Then turn cap slightly to relieve pressure before removing.
What must be done regarding the hydraulic system pressure on the JOHN DEERE JD640 before servicing?
Don’t forget a hydraulic system may be pressurized! To relieve system pressure, stop engine, lower blade and boom, operate steering wheel and service brakes, and operate blade, boom, and grapple controls until system fails to respond.
How should one check for pressurized fluid leaks on the JOHN DEERE JD640?
Escaping fluid under pressure can penetrate the skin causing serious injury. Relieve pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure. Keep hands and body away from pinholes and nozzles which eject fluids under high pressure. Use a piece of cardboard or paper to search for leaks. Do not use your hand.
If ANY fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar with this type injury or gangrene may result.
What is the instruction for discharging the brake accumulator on the JOHN DEERE JD640?
The skidder is equipped with a brake accumulator-recharge by using only dry nitrogen. To discharge brake accumulator apply the brake pedal about 30 times.
What is the procedure for checking tire mounting safety on the JOHN DEERE JD640?
A-Use a Safety Cage if available.
B-DO NOT Stand Over Tire. Use a Clip-On Chuck and Extension Hose.
What are the pre-checks for maintenance readiness on the JOHN DEERE JD640?
Check guards, canopies, safety bars-all protective devices installed on the skidder. Every one should be in place and secure.
CHECK IT OUT!
☐ GUARDS
☐ CANOPIES
☐ SHIELDS
☐ PROTECTIVE DEVICES
☐ ROLL-OVER PROTECTIVE STRUCTURES
☐ SEAT BELTS
☐ FIRE EXTINGUISHER
☐ FIRE SUPPRESSION SYSTEM, ETC.
Carefully inspect equipment for visual defects-leaks in fuel, lubrication, and hydraulic systems. Do not search for pressurized fluid leaks with your hands. Use cardboard or wood to search for leaks.
Check levels of fuel, coolant, hydraulic fluid, and lubricating oil. If fuel must be added-FIRST, PUT OUT THAT CIGARET.
Check and secure all caps and filler plugs for fuel, oils, radiator, etc.
Be sure to clean any oil, grease or mud accumulation from floor of operator’s compartment, stepping points, and grab rails to minimize the danger of slipping.
In freezing weather beware of snow or ice deposits on stepping points, grab rails, and floor.
Remove loose bolts, tools, or other objects from floor of operator’s compartment.
What safety measures are associated with machine operation during maintenance checks on the JOHN DEERE JD640?
Avoid working on equipment with the engine running. If it is necessary to make checks with the engine running, ALWAYS USE TWO SERVICE TECHNICIANS-one, the operator, at the controls, the other checking in view of the operator. Also, put the transmission in neutral, set the brake, and apply any safety locks provided. KEEP HANDS AWAY FROM MOVING PARTS.
What is required for operating adjustments on the JOHN DEERE JD640?
Keep clutch and brake control units properly adjusted at all times. Before making adjustments, stop engine.
What precautions apply for maintenance adjustments on the JOHN DEERE JD640?
Don’t attempt to check belt tension while the engine is running.
Before removing any housing covers, stop engine. Take all objects from your pockets which could fall into the opened housings. Don’t let adjusting wrenches fall into opened housings.
Don’t adjust the fuel system while the machine is in motion.
What should be done before working on the engine fuel system of the JOHN DEERE JD640?
Before working on the engine fuel system-close fuel shutoff valve.
What is the instruction for safety when changing cutting edges on the blade of the JOHN DEERE JD640?
When changing cutting edges on blade-Stop the engine and securely block the blade.
What must be done before repairing the electrical system or performing a major overhaul on the JOHN DEERE JD640?
Before repairing the electrical system, or performing a major overhaul, make sure the batteries are disconnected.
What should be remembered when preparing the engine of the JOHN DEERE JD640 for storage?
When preparing engine for storage, remember that inhibitor is volatile and therefore dangerous. Seal and tape openings after adding inhibitor. Keep container tightly closed when not in use.
What is the proper way to handle cable when working on the JOHN DEERE JD640?
Always wear gloves when handling cable.
What must be ensured regarding the ROLL-OVER protective equipment (ROPS) on the JOHN DEERE JD640 after maintenance?
If ROLL-OVER protective equipment is loosened or removed for any reason, make certain all parts are reinstalled correctly. Tighten mounting bolts to proper torque.
The protection offered by ROPS will be impaired if the ROPS is subject to structural damage, has been involved in an overturn incident or is in anyway altered. Damaged ROPS should be replaced, not reused.
What should be done to test the coolant heater in liquid on the JOHN DEERE JD640?
Use a heavy-duty grounded cord to connect coolant heater to electrical power.
Do not plug into electrical power unless heating element is immersed in coolant. Sheath could burst and result in personal injury.
What is the safe way to store starting aids for the JOHN DEERE JD640?
Store starting aids in a cool and well-ventilated place, out of the reach of unauthorized personnel.
What precautions should be taken regarding noise exposure when servicing the JOHN DEERE JD640?
Prolonged exposure to loud noise can cause impairment or loss of hearing. Wear a suitable hearing protective device such as earmuffs (A) or earplugs (B) to protect against objectionable or uncomfortable loud noise.
What must be done to ensure the JOHN DEERE JD640 maintenance area is safe?
Make sure the maintenance area is adequately vented.
Keep maintenance area CLEAN AND DRY. Oily and wet floors are slippery; greasy rags are a fire hazard; wet spots are dangerous when working with electrical equipment.
What is the instruction for stopping the engine before cleaning or lubricating the JOHN DEERE JD640?
Stop the engine before cleaning or lubricating the skidder.
Lower blade and grapple to the ground carefully.
What safety consideration is important when checking belt tension on the JOHN DEERE JD640?
Don’t attempt to check belt tension while the engine is running.
What are the necessary steps to relieve hydraulic system pressure on the JOHN DEERE JD640?
To relieve system pressure, stop engine, lower blade and boom, operate steering wheel and service brakes, and operate blade, boom, and grapple controls until system fails to respond.
What is necessary when checking hydraulic pressure on the JOHN DEERE JD640?
When checking hydraulic pressure, be sure to use the correct test gauge for the pressure in the particular system.
What precautions should be taken to prevent personal injury from sharp edges on the JOHN DEERE JD640 during repair?
Never let your bare hands come in contact with sharp edges. WEAR GLOVES.
What must be checked regarding protective devices on the JOHN DEERE JD640 before maintenance?
The following protective devices must be checked to ensure they are in place and secure:
- GUARDS
- CANOPIES
- SHIELDS
- PROTECTIVE DEVICES
- ROLL-OVER PROTECTIVE STRUCTURES
- SEAT BELTS
- FIRE EXTINGUISHER
- FIRE SUPPRESSION SYSTEM, ETC.
What are the key items to check for visual defects on the JOHN DEERE JD640 before maintenance?
Carefully inspect equipment for visual defects-leaks in fuel, lubrication, and hydraulic systems.
Where can a technician find detailed tire mounting instructions and safety precautions for the JOHN DEERE JD640?
Detailed tire mounting instructions, including necessary safety precautions are contained in John Deere Fundamentals of Service (FOS) Manual 55, Tires and Tracks, available through your John Deere dealer. Such information is also available from the Rubber Manufacturers Association and from tire manufacturers.
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