JOHN DEERE JD755 (01) PDF Document

Specific safety procedures should always be observed, whether servicing or making repairs on the JOHN DEERE JD755 Crawler Loader. Remembering these can prevent an injury or save your life.

Do not smoke while refueling or handling highly flammable material.

The 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 the 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.

Do not perform any work on the crawler 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.

Plan ahead work safely avoid accidental damage and injury.

If a careless moment does cause an accident or fire, react quickly with the tools and skills at hand know how to use a first aid kit and a fire extinguisher and where to get aid and assistance.

In an emergency, split second action is the key to safety.

Before servicing, adjusting, or repairing crawlers which have attachments such as buckets, etc., LOWER attachments to the ground or, if necessary to raise them for access to certain parts, SECURELY SUPPORT with boom safety pin. 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.

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.

Store starting aids in a cool and well ventilated place, out of the reach of unauthorized personnel.

Stop the engine before cleaning or lubricating the crawler.

Lower bucket and ripper to the ground carefully.

Avoid working directly under raised and blocked equipment unless absolutely necessary.

If the crawler is on an incline, block it securely.

Use extreme caution in removing radiator caps, drain plugs, grease fittings, or hydraulic pressure caps.

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.

Don’t forget a hydraulic system may be pressurized! To relieve system pressure, stop engine, lower bucket and ripper and operate bucket and ripper control levers until system fails to respond.

When checking hydraulic pressure, be sure to use the correct test gauge for the pressure in the particular system.

Wear safety glasses when drilling, grinding, or hammering metal.

Don’t attempt to check belt tension while the engine is running.

Don’t adjust the fuel system while the machine is in motion.

Before working on the engine fuel system, close fuel shutoff valve.

When changing cutting edges on bucket, stop the engine and securely block the bucket.

Before repairing the electrical system, or performing a major overhaul, make sure the batteries are disconnected.

Always wear gloves when handling cable.

Never let your bare hands come in contact with sharp edges. WEAR GLOVES.

Check guards, ROPS, safety bars-all protective devices installed on the crawler. Every one should be in place and secure.

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.

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.

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.

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 attempt to check belt tension while the engine is running.

Don’t adjust the fuel system while the machine is in motion.

When preparing engine for storage, remember that inhibitor is volatile and therefore dangerous. Seal and tape openings after adding the inhibitor. Keep container tightly closed when not in use.

The engine is a John Deere 6-cylinder turbocharged diesel, valve-in-head, 4-stroke cycle.

Bore and stroke: 4.19×5 in. (106.4×127 mm)

Piston displacement: 414 cu. in. (6 784 cm³)

Compression ratio: 16.2 to 1

Maximum torque @ 1300 rpm: 345 lb-ft (468 Nm) (48 kg/m)

NACC or AMA (U.S. Tax) horsepower: 42

Lubrication: Pressure system with full flow filters

Main bearings: 7

Cooling: Pressurized with thermostat and controlled bypass

Fan: Blower

Air cleaner with restriction indicator: Dry

Electrical system: 24 volt with alternator

Batteries (two-12 volt): Reserve capacity: 180 minutes each

Cold weather starting: Disconnect clutch completely disengages hydrostatic drive and all hydraulics.

Splitter drive: Pressure-lubricated helical gears drive both hydrostatic transmissions, main hydraulic pump, winch drive shaft and auxiliary pump drive.

Drive: Dual-path, fully automatic, infinitely variable hydrostatic transmissions.

Speeds: Infinite from 0 to 6.5 mph (0 to 10.5 km/h) forward or reverse.

Control: Single-lever, variable speed, forward and reverse.

Steering: Fully modulated, infinitely variable pedal steering for live power turns and counter-rotation. No need for steering clutches or steering brakes.

Brakes: Service: Hydrostatic

Parking: Wet-disk brakes are automatically applied when engine is stopped or can be applied with center pedal during normal operation.

The power specifications (@ 2100 rpm) for the JOHN DEERE JD755 Crawler Loader are:

Net engine flywheel power is for an engine equipped with fan, air cleaner, water pump, lubricating oil pump, fuel pump, alternator and muffler. The gross engine power is without fan. Flywheel power ratings are under SAE standard conditions of 500 ft. (150 m) altitude and 85°F (29°C) temperature, and DIN 70 020 conditions (non-corrected). No derating is required up to 10,000 feet (3 000 m) altitude.

*In the International System of units (SI), power is expressed in kilowatts (kW).

Net engine flywheel power is for an engine equipped with fan, air cleaner, water pump, lubricating oil pump, fuel pump, alternator and muffler. The gross engine power is without fan. Flywheel power ratings are under SAE standard conditions of 500 ft. (150 m) altitude and 85°F (29°C) temperature, and DIN 70 020 conditions (non-corrected). No derating is required up to 10,000 feet (3 000 m) altitude.