Hearing protection may be needed when the machine is operated with an open operator station for extended periods or in a noisy environment. Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors and windows are open for extended periods or in a noisy environment.
The declared operator Equivalent Sound Pressure Level (Leq) is 83 dB(A) when "ANSI/SAE J1166 FEB 2009" is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
The declared average exterior sound pressure level is 87 dB(A) when the "SAE J88Feb06 - Constant Speed Moving Test" procedure is used to measure the value for the standard machine. The measurement was conducted under the following conditions: distance of
The declared exterior sound power level is 115 dB(A) when the value is measured according to the static pressure test procedures and the conditions that are specified in "ISO 6393:2008".
The declared sound levels listed above include both measurement uncertainty and uncertainty due to production variation.
The declared dynamic operator sound pressure level is 79 dB(A) when "ISO 6396:2008" is used to measure the value for an enclosed cab. The measurement was conducted at 100% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
The declared sound levels listed above include both measurement uncertainty and uncertainty due to production variation.
Sound Level Information for Machines in Eurasian Economic Union Countries
The declared dynamic operator sound pressure level is 79 dB(A) when "ISO 6396:2008" is used to measure the value for an enclosed cab. The measurement was conducted at 100% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
The declared sound levels listed above include both measurement uncertainty and uncertainty due to production variation.
"The European Union Physical Agents (Vibration) Directive 2002/44/EC"
Vibration Data for Wheel Scrapers
Information Concerning Hand/Arm Vibration Level
When the machine is operated according to the intended use, the hand/arm vibration of this machine is 2.6 m/s2.
Information Concerning Whole Body Vibration Level
This section provides vibration data and a method for estimating the vibration level for wheel scrapers.
Note: Vibration levels are influenced by many different parameters. Many items are listed below.
- Operator training, behavior, mode and stress
- Job site organization, preparation, environment, weather and material
- Machine type, quality of the seat, quality of the suspension system, attachments and condition of the equipment
It is not possible to get precise vibration levels for this machine. The expected vibration levels can be estimated with the information in Table 1 in order to calculate the daily vibration exposure. A simple evaluation of the machine application can be used.
Estimate the vibration levels for the three vibration directions. For typical operating conditions, use the average vibration levels as the estimated level. With an experienced operator and smooth terrain, subtract the Scenario Factors from the average vibration level in order to obtain the estimated vibration level. For aggressive operations and severe terrain, add the Scenario Factors to the average vibration level in order to obtain the estimated vibration level.
Note: All vibration levels are in meter per second squared.
| "ISO Reference Table A - Equivalent vibration levels of whole body vibration emission for earthmoving equipment." | ||||||||
|---|---|---|---|---|---|---|---|---|
| Machine Family | Machine Type | Typical Operating Activity | Vibration Levels | Scenario Factors | ||||
| X axis | Y axis | Z axis | X axis | Y axis | Z axis | |||
| Scraper | Wheel Scraper | work cycle | 1,05 | 1,18 | 1,12 | 0,34 | 0,40 | 0,42 |
Note: Refer to "ISO/TR 25398 Mechanical Vibration - Guideline for the assessment of exposure to whole body vibration of ride on operated earthmoving machines" for more information about vibration. This publication uses data that is measured by international institutes, organizations, and manufacturers. This document provides information about the whole body exposure of operators of earthmoving equipment. Refer to Operation and Maintenance Manual, SEBU8257, "The European Union Physical Agents (Vibration) Directive 2002/44/EC" for more information about machine vibration levels.
Guidelines for Reducing Vibration Levels on Earthmoving Equipment
Properly adjust machines. Properly maintain machines. Operate machines smoothly. Maintain the conditions of the terrain. The following guidelines can help reduce the whole body vibration level:
- Use the right type and size of machine, equipment, and attachments.
- Maintain machines according to the manufacturers recommendations: tire pressures and brake and steering systems, controls, hydraulic system, and linkages.
- Keep the terrain in good condition by performing the following items: remove any large rocks or obstacles, fill any ditches and holes and provide machines and schedule time in order to maintain the conditions of the terrain.
- Keep the seat maintained and adjusted by doing the following: adjust the seat and suspension for the weight and the size of the operator and inspect and maintain the seat suspension and adjustment mechanisms.
- Perform the following operations smoothly: steer, brake, accelerate and shift the gears.
- Move the attachments smoothly.
- Adjust the machine speed and the route in order to minimize the vibration level by doing the following: drive around obstacles and rough terrain and slow down when necessary to go over rough terrain.
- Minimize vibrations for a long work cycle or a long travel distance by doing the following: use machines that are equipped with suspension systems, if no ride control system is available, reduce speed in order to prevent bounce and haul the machines between workplaces.
- Less operator comfort may be caused by other risk factors. The following guidelines can be effective in order to provide better operator comfort: adjust the seat and adjust the controls in order to achieve good posture, adjust the mirrors in order to minimize twisted posture, provide breaks in order to reduce long periods of sitting, avoid jumping from the cab, minimize repeated handling of loads and lifting of loads and minimize any shocks and impacts during sports and leisure activities.
Consult your local Cat dealer for more information about machine features that minimize vibration levels. Consult your local Cat dealer about safe machine operation.
Use the following web site in order to find your local dealer:
Caterpillar, Inc.www.cat.com