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70 Part 3: FWD Equipment Maintenance Question 7: Does your agency have a written FWD maintenance plan? FIGURE B2 Survey response to Question 7: "Does your agency have a written FWD maintenance plan?" Question 8: If not, please describe your FWD maintenance activities. Include scheduling and activity descriptions. TABLE B3 Survey question 8: "If not, please describe your FWD maintenance activities: Include scheduling and activity descriptions" State Response Alaska Lubrication once a year. Relative calibration annually. Arizona Weekly system maintenance. California For FWD maintenance documentation we use the manufacturer's manual. We have annual preventative mainte- nance performed at the manufacturer's facility prior to the annual calibration. Routine maintenance activities are performed by FWD operators and equipment shop mechanics. Colorado Follow manufacturer's schedule. The JILS is fairly maintenance free. · Annual maintenance checks and service · Fluid check/change · Brakes · Tires · Mechanical check (FWD equipment) Idaho Every 2 weeks the crew bleeds the hydraulic system. They do a daily check of the FWD trailer and schedule other maintenance as needed. Illinois Routine maintenance of tow vehicle. Repair operational problems with FWD as they arise. Indiana Winter maintenance activities include (maintenance procedures on) data acquisition, computer, sensors, cabling, mechanical, monitoring devices, and vehicles. Iowa · Geosensor stability spring replacement annually · Load spring (bumper) replacement every 2 years · Cleaning, wiring maintenance, inspection annually Kansas We check (our FWDs) out before each season looking for worn or broken parts, and we test them for proper operation. Louisiana Calibrated at manufacturer once a year, plus monthly relative calibration. continued
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71 TABLE B3 (continued) State Response Maine Overall maintenance is completed on an as-needed basis. Greasing, oil changes, etc., are completed on a schedule. Maryland (We follow) manufacturers' manual suggestions. Michigan Yearly preventive maintenance program with ERI, Inc., the U.S. KUAB representative. Minnesota Routine--performed weekly or as needed by the FWD operator. Annual--performed yearly by agency personnel. Major--performed by vendor. Missouri We fix problems as they come up. Usually, we have to bleed air out of the hydraulic lines about once a year. Montana The vehicle maintenance is performed by our own mechanics, based on amount of mileage driven, and our opera- tors. Our mechanics perform scheduled maintenance every 5,000 and 30,000 miles. Once a year, they are inspected by the vendor during yearly SHRP calibration. Nebraska We do project maintenance and annually we send it to KUAB for maintenance. Nevada Vehicles (both tow vehicle and FWD) are checked out prior to leaving for the job. In addition, our Equipment Divi- sion has preventive maintenance checks that come due every 6 months. New Mexico (We perform) quarterly servicing, using service and maintenance manuals. Velocity transducer calibrations and technical support for maintenance and repairs (are provided by the) vendor. New York Our Equipment Management Facility at Waterford performs regular maintenance of FWD vehicles. We usually send (FWD trailers) to KUAB and Dynatest for maintenance; not every year, but at an interval of several years. North Dakota · Monthly--clean the sensor bases and holders with an emery cloth. · Every other day--lubricate the sensor guides. · Once a month--grease the load cell. · Daily--check hydraulic fluid level. · A draft manual of FWD procedures has been started but not finalized. Ohio One day a week is set aside for data processing and maintenance, if needed. During the off season, equipment is inspected and preventive maintenance performed. Oregon Trailer serviced at 5,000-mile intervals with scheduled tow vehicle maintenance. Weekly calibration checks at five known locations--two on PCC and three on AC. Sensor stack calibration check done every 8 weeks. Rhode Island Our FWD is not used very often and has not yet required any significant maintenance. South Carolina Monthly relative calibration, lubrication, and visual inspection. Biennial service visits to manufacturer. South Dakota Maintenance (is performed) in-house. Tennessee We do not currently utilize our FWD on a regular basis. Utah (We follow) manufacturers' recommendations. Vermont Relative calibrations are done by operator, trailer maintenance by operator and state agency. Virginia Vehicle maintenance is done by the local VDOT shop on a maintenance schedule set up by the equipment division. Maintenance on the trailer and electronics is performed by the operator in accordance with guidelines established by the vendor. Washington Yearly maintenance service is performed on hydraulic system, catch assembly, batteries, and calibration of load cell State and sensors. Wisconsin Greasing, oiling, sensor calibration, DMI (distance measuring instrument) calibration, troubleshooting electronics, and battery testing.
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72 Question 9: Who performs maintenance activities on the FWD equipment your agency uses? (Check all that apply.) FIGURE 3 Survey response to Question 29, "What kind of flexible pavement field testing manual does your agency use?" Question 10: Who performs maintenance activities on the FWD vehicles your agency uses? (Check all that apply.) FIGURE B4 Survey response to Question 10: "Who performs maintenance activities on the FWD vehicles your agency uses?" (Check all that apply.)
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73 Question 11: Please describe any additional practices that have kept your FWD equipment in good working order. TABLE B4 Survey question 11: "Please describe any additional practices THAT have kept your FWD equipment in good working order" State/Manufacturer Response Alabama Technicians perform weekly walk-around prior to taking equipment out. Alaska Check lube, tightness of bolts and connections. Arizona Weekly system service. California We have a vehicle usage and/or time limit for vehicle maintenance. Routine inspection of the FWD equipment is also performed at those maintenance intervals. FWD problems are either fixed in-house or sent to the manufacturer to fix. Colorado Garaged to protect it from weather when not in use. Continuous operator maintenance during use. Florida Monthly visual checks for all general items such as lights, tires, sun degradation of electrical components, and general corrosion of exposed components. Idaho We perform relative calibrations to check for problems. Check and replace worn or damaged parts. Indiana No winter testing. Iowa Replacement of geosensors every 3 years. Replacement of transducer approx. 5 years (depending on usage/wear). Annual calibration at Denver, Colorado, facility. Monthly relative calibrations of geosensors. Louisiana We have a full-time mechanic who keeps all of our equipment in working condition. Maryland Operator involvement (ownership). Michigan Common sense. Missouri We try to house the equipment indoors as much as possible. Montana Our FWDs and their vehicles are pressure washed and the inside of the vehicle is wiped down every Thursday. This helps with dust in the computer systems and then all of the hydraulic rams can be inspected and lubed. Nevada Vehicles are kept clean. Any signs of leaks are fixed ASAP. If we have any operating problems that we cannot resolve, we call the manufacturer for assistance. New Jersey We also perform in-house maintenance as necessary. New Mexico Operational standards are set for testing. Daily walk-around inspection of the working parts for unit. New York Our operator attends the FWD User Group meeting where operators discuss FWD maintenance. FWD Calibration Center Operator also provides tips regarding good maintenance habits. North Carolina Sheltered storage and washed regularly. Oregon Services are done at 5,000-mile intervals at same time the towing vehicle is serviced. Pennsylvania Keeping all the components clean and the FWD units indoors when they are not being used. South Carolina Our oldest unit was overhauled and updated by the manufacturer approximately 10 years ago. Utah Annual calibration. Vermont Stored in a heated garage. Washington Daily pre-inspection inspection of working operation. Wisconsin Strive to gain rudimentary knowledge of electrical symbols and components to help in trouble shooting. Dynatest We have several different maintenance/overhaul/upgrade plans to meet customer needs and budgets. Consulting, Inc.