> The Benefits of APT
Preventative Maintenance

Engineering Services

At APT, our commitment to customers continues long after we've delivered and installed our equipment. We provide a broad range of services to ensure optimum system reliability and longevity.

Preventive Maintenance

You Concentrate on Your Business, We'll Maintain Your Equipment.

Scheduled maintenance is essential to keep your equipment performing accurately, reliably and cost-effectively. And the best place to do it is at APT. Nobody's better equipped to inspect and service the test systems and equipment that we sell. Our engineers are trained experts who know our systems and equipment inside and out. Trust us to be there to keep your equipment performing at its peak. We will take care of it so that you can focus on your business.

The Benefits of APT Preventative Maintenance

A standard or customized maintenance plan that meets your specific needs.
All the services, parts, labor and expertise you need, or selected portions of an overall maintenance program as you request.
Price discounts for multiple testing systems.

Listed below are two recommended preventive maintenance for MTS Test Systems:

Preventive Maintenance for Electromechanical Testing Systems
The standard preventive maintenance items for electromechanical systems listed below are typically performed during calibration to reduce time and costs. MTS recommends following this schedule.

Annual Maintenance Cleaning/inspection:
Check system operation.

Inspect/clean controller.
Vacuum or blow out frame assembly base unit.
Visually inspect drive belts for excessive wear.

Lubrication:

Crosshead.
Ballscrew - #2 white lithium grease.

Test and adjustment:

Perform speed test.
Perform system drift test and adjust as required. Biannual Maintenance Change of gear oil

Biannual Maintenance
Change of gear oil

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Preventive Maintenance for Hydraulic Power Supplies
Quarter-Annual Maintenance (500 hours)

Check hoses for wear, blisters, twists and rubbing
Check and record motor current
Check for leaks
Record hours
Replace filters on hydraulic power unit
Check and adjust hydraulic fluid delivery system
Sensory check of hydraulic fluid characteristics

Semi-annual Maintenance (1000 hours)

Check hoses for leaks and retighten
Check pump head case drain flow
Sample hydraulic fluid and analyze for contamination
Check operation of pressure relief
Check and adjust pre-charge on accumulators
Check for hydraulic fluid leakage across all piston style accumulators

Annual Maintenance Visit: 500 hour and 1000 hour maintenance items for servohydraulic power supplies - performed during one annual visit.

Optional Maintenance: Replace hydraulic fluid (Note: Hydraulic fluid is not provided by MTS; customer is responsible for disposal.)

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Preventive Maintenance for Servohydraulic Testing Systems
Quarter-Annual Maintenance (500 hours)
Controller items:

Check console cooling
Clean or replace air filter

Load frames and actuator systems:

Inspect columns for scoring
Check all seals for leaks
Check and clean crosshead lift & lock system
Lubricate swivel grease fittings
Check swivels for wear and backlash

Actuators:

Clean actuator piston rod
Check servovalve balance
Inspect actuator bellows

Hydraulic service manifold:

Check indicator or replace filter on pilot line

Grips:

Check hydraulic grips pressure supply
Check air filter moisture gap
Clean and maintain grip air filter

Semi-Annual Maintenance (1000 hours)
Load frames and actuator systems:

Check and adjust precharge on accumulators
Check and adjust low-pressure bypass setting
Replace pilot and main pressure line filters
Check for leakage across the accumulator pistons
Check proportional valve and pressure reducing valve
Lubricate actuator spline coupling bearings

Annual maintenance (2000 hours)
Controller systems:

Major retuning of the analog console
Check system operation
Check digital I/Os
Replace air cooling filter element Load frames and actuator systems:
Check alignment of load cell (not on model 380)
Replace hydraulic grips supply in-line filter
Check backlash on split-jaw swivels
Bleed hydraulic lift cylinders

Annual Maintenance Visit: 500, 1000, and 2000 hour maintenance items for servohydraulic testing systems performed during one annual visit.

Annual Maintenance Visit Including Hydraulic Power Supply: 500, 1000 and 2000 hour maintenance items for servohydraulic testing systems including hydraulic power supply performed during one annual visit. Hydraulic fluid replacement option not included.

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Actuator Remanufacturing Program

Load Units with Integral Actuators
Model 204
Model 231.xx to 248.xx
Model 242.xx to 244.51 End Cap Remanufacturing

If you're trying to decide whether to repair your present actuator or replace it with a new one, here's a third, and probably better solution: Consider having it remanufactured by MTS.

Benefits of the MTS Actuator Remanufacturing Program

15 month warranty: This assures you of a lasting investment and the highest standards in quality control and workmanship. "
Installation of latest designs: We incorporate any of the product improvements that have been developed since your actuator was manufactured.
Manufacture and test to MTS specifications: This assures you that your actuator will run at peak performance and will provide maximum trouble-free service.
All wear areas resurfaced: You can expect to receive the same service life from your remanufactured actuator as you did from the new one. All worn parts are resurfaced or replaced.

For more information about the MTS Actuator Remanufacturing Program, please contact our APT engineers.

Calibration for MTS Test Systems

Your customers hold you responsible for the integrity of your test data. Don't leave your calibration up to just anyone. Calibration and verification testing are the only ways to ensure accuracy and repeatability in your testing systems. APT can help. Calibration carried out by MTS-certified engineers means: 100 percent accuracy, repeatability and traceability.

Recent Developments In Industry Calibration Standards (55 KB)

This white paper will help take the mystery out of industry calibration standards. It will help you understand the relationship between QS9000, the FQA, ISO/IEC Guide 25, A2LA, and NVLAP. Now you can determine the impact on your lab and how you can stay within standards.

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