Your fuel and lube truck can provide you with an array of benefits, including boosted efficiency, minimized downtime, and enhanced safety on the job site. However, if you wish to make the most of these perks, it is important to know how to troubleshoot fuel/lube truck issues quickly and get the vehicle back on track without wasting valuable time.

While your fuel and lube truck will most likely provide you with highly reliable performance if you choose the right manufacturers in Arizona, operating the vehicle in rough conditions may still lead to unforeseen problems. Here are some common issues with fuel and lube trucks and how you can resolve them.

How to troubleshoot your fuel and lube trucks

The most common issues owners of fuel and lube trucks face seem to be related to the fuel pump and the air compressor. Read on to discover the most frequently encountered situations.

Troubleshooting the fuel pump

If the fuel pump is surging on and off or not pumping, take the following steps:

• First things first, do not operate the fuel and lube truck while the fuel pressure bypass switch is disconnected.
• Check if the switches for emergency shut off are closed.
• Check the emergency switches and valve for leaks and exhaust upon disengagement.
• Check whether the air supply is connected to the air cylinder on the emergency valve.
• Check whether the bypass fuel pressure switch is faulty and replace it if necessary.
• Make sure that your fuel tank has enough fuel.

If the hydraulic motor of the fuel pump turns on but the fuel pump doesn’t start, try the following:

• Check whether the rubber gear coupling located between the hydraulic motor and the pump rotates or not.
• If it’s broken, check whether the pump is locked up.
• If the fuel pump can rotate freely, try replacing the coupler.
• If it doesn’t, you may need to replace the pump.
• Make sure to check the coupler screws to see whether they are loose.

If the fuel pump surges when the air compressor is turned on, this procedure may help:

• Is the hydraulic reservoir filled up? If it is, contact your fuel and lube truck manufacturer.
• Make sure to check whether the hydraulic flow settings on the air compressor or fuel pump have been adjusted.

Troubleshooting the air compressor

If the air compressor won’t run, try these steps:

• Make sure that the air compressor switch is on by checking the control panel.
• Make sure that the bed power switch is turned on.
• Check whether the air gauge has shut off.
• Check the oil levels in the air compressor and make sure it hasn’t locked up.
• Check the hydraulic oil levels.
• Check the compressor coil using a voltmeter.

If the air compressor won’t shut off:

• Check the pressure gauge and adjust it if necessary.
• Check the electrical wiring leading to the air compressor coil and have any damaged wiring repaired.
• Replace the air compressor if the previous steps don’t work.

If the air compressor is blowing the air dryer top or it’s causing the lubricator to leak, here’s what you can do:

• Check whether the regulator is adjusted properly.
• Make sure that the water has drained out.
• Replace the regulator if it can’t be adjusted.

Looking for fuel and lube truck manufacturers in Arizona? Contact Curry Supply Now

Modern fuel and lube trucks are designed to work safely, efficiently, and reliably, in a wide range of operating conditions. At Curry Supply, we can provide you with high-quality fuel/lube trucks for your business and bring you all of these perks and more. Make sure to contact us to learn more about our product offering and get more tips, whether you want to find out what the best fuel/lube truck setup is or any other truck-related information. Contact us at 800-345-2829 today.