The devices are expensive and heavy to develop a program of preventive maintenance to last as much as possible. The maintenance department of this type of equipment must carry a checklist of preventive maintenance on every one of the teams to meet the standards of the Occupational Safety and Health Administration (OSHA). This checklist must have data scheduled, the dates that will carry out and documented to meet the federal guidelines.
Date, time and inspector
Each checklist of preventive maintenance of heavy equipment must record the date on which the inspection was conducted, the time it took place and the name of the inspector who completed the checklist. The intention is not only to keep records, but also to allow the maintenance mechanic or the person who carried out the repair to answer questions later from the inspector about the bugs found during the inspection checklist.
Sections of the checklist
Most checklists of preventative maintenance for heavy equipment are broken down into sections, and each lists the parts to be inspected. One of these lists has sections such as what should be inspected from the ground, which parts should be reviewed in the engine compartment and which must be inspected in the cabin. Many of these lists include a section on safety equipment, where the inspector can record the safety equipment such as fire extinguishers, lights and sound warning, security lights and turn signals and devices protection in general, cages and scrollbars.
Each section of a checklist of preventive maintenance of heavy equipment is broken down into categories. One will be a list of parts or test items. Another category will list what to look for when that element or part is inspected, and the last category should leave space for additional comments or problems encountered during the inspection.
The crane rigging consists of an intricate system of slings, chains and belts lift properties using natural mechanical angles to distribute weights safely. The term “load angle” is used in these systems to describe the angle between any belt or chain and the surface of the charge that is held. For example, if a strap sling has been placed in each corner of a rectangular container, the load angle is the angle between the container lid and each corner sling, once it is suspended by the crane.
- Determine the desired weight of your load, consult the accompanying documents, sometimes known as the “cargo manifest”. This sum weight of the cargo container, a standardized number is usually available at the secretariat of the shipyard.
- Decide on the number of sling legs used to carry the load. Divide the weight full load among their number; for example, if the total load and weight of the container amounts to 1,200 lb (540 kg) load using sling divide by four, this weighing 300 lb (135 kg) distributed for each. This number is called the vertical load.
- Consult the manufacturer’s literature for each of your slings and determines the maximum rating, or “weight limit” of each sling. Divide the vertical load distributed on each leg sling for his highest rating. For example, with 300 lb. (135 kg) vertical load and a maximum rating of 600 lb (270 kg), the resulting division (300/600) corresponds to the number two. Using a calculator, press the “arcsine” (“arcsine”) button and “two” to find the angle of maximum load for your load and sling specific angle; in this case, this angle would be 30 degrees.
Tips & Warnings
- Always check your numbers twice when calculating the maximum loading angle. As a rule, the angles of 30 degrees are very insecure, and generally are not used due to unnecessary tension exerted on the straps of the sling. Angles between 45 and 90 degrees are most common and safe for normal operation.
Deere & Company, whose offices are in Moline, Illinois, produces equipment for industrial gardening and consumers of the brand John Deere. A backhoe has a shovel connected to an arm, which is located in the rear part of a magazine. John Deere 310A backhoe was produced between 1975 and 1982. You can rent or buy these in backhoes stores, home improvement and landscaping.
The John Deere 310A has a series four-cylinder diesel John Deere engine 300. The engine has a displacement of 219 cubic inches (3588.767 cm³), which refers to how much you can push the fluid through the piston in a cylinder movement. The cylinder diameter is 4.02 inches (10,21cm) and piston travel 4.33 inches (10.99 cm), which is the total length that the pistons can move within the cylinder. The engine uses coolant, and it’s liquid tank can hold up to 16 quarts (15.14 L). The revolutions per minute (rpm) are 2500 and produce 150 foot-pounds (20.73 kg / m).
Backhoe dimensions are 23 feet 7 inches (7.18 m) long and 11 feet 3 inches (3.43 m) high, 6 feet 10 inches (2.08 m) wide, and weigh 12,519 pounds (5.7 tons). Use covered 7.50-16 and 11L-15 forward and 16.9-24 19.5L-24 and back. The fuel tank holds 19.5 gallons (73.8 L), tanks and transmission and hydraulics can hold 20.5 gallons (77.6 L).
This machine has 8 forward gears and 8 backwards. The lubrication pressure is between 8 and 10 pounds per square inch (psi) (.56-.70 kg / cm2), and the clutch operating pressure of between 155 and 165 psi (10.9 to 11, 6 kg / cm2). The system pressure reverses when the backhoe is operating at idle speed is between 155 and 165 psi, and the pressure release filter is 50 psi (3.5 kg / cm2). Transmission pump can move up to 10.5 gallons per minute (gpm) (39.7 L) when operating at 2200 rpm and 150 psi. The transmission cargo tank can hold up to 8.5 gallons (32 L), and the cooling system can contain up to 4 gallons (15 L). The casing contains up to 9 quarts (8.5 liters) of fluid.
In a backhoe John Deere 310A is a 3 cubic inches (49 cm³) pump and the hydraulic pump moves 23 gpm (87 liters per minute) when the machine operates at 2,000 psi (140.8 kg / cm2) and 2,200 rpm. The relief pressure of the hydraulic system is 150 psi (10.5 kg / cm2), and avoid overloading it. Resting pressure is between 2,300 and 2,400 psi (162 and 169 kg / cm2), and valve pressure filter 50 psi (3.5 kg /