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Why do the white lights in my apparatus light bar shut off when the parking brake is applied?


White lights on the fire apparatus are defaulted to the parking brake and are disabled when it is applied. NFPA states that white lights are not permitted when the vehicle is in the “Blocking Right of Way” mode. Note: White lights limit the vision of operators of approaching apparatus.

Why is it possible to add several gallons of fuel to the fuel tank even though the fuel gauge reads full?


The fuel tank is designed to have a 2” vapor space at the top of the tank for vapor expansion. Topping off the fuel tank causes tank overfill and could result in a splash hazard to the person filling the tank. Do not top off fuel tanks.

Why do I hear the backup alarm sound when the check engine light illuminates.


The apparatus is monitored electronically for possible engine or electrical system problems.When a problem is detected a system warning light is illuminated and an audible alarm is sounded. This is designed to bring the problem to the apparatus operator’s attention. The audible alarm is often the same style as the vehicle back up alarm and the tone sounds the same.The most common reasons for the alarm activation are low voltage or low fluids.

Sometimes our truck goes right to Hi Idle immediately when it is started;


The truck has an electronic load management system that monitors the status of the electrical system. If the truck has been shut down and the batteries have had a draw on them reducing their voltage, the system will respond when the truck is started by increasing the engine speed to 1200 RPM. At Hi Idle the alternator is putting out its maximum output to recharge the system. To shut off the Hi Idle simply step on the brake pedal.

What does the flashing red light in the cab denote?


The red flashing “ Hazard Light” in the cab is a warning indicator to the apparatus operator and will illuminate automatically when the parking brake is disengaged and any of the following conditions exist:

– Any passenger or equipment compartment is not closed.
– Any telescoping quartz light is not in the stowed position.
– Any telescoping deck gun is not in the stowed position.
– Any hose bed door is open.
– Any other device that is permanently attached to the apparatus is open, extended, or deployed in a manner that is likely to cause damage to the apparatus if the apparatus is moved.

Note: If the operator sees the Hazard Light flashing he should check the E-ONE E-Logic screen to determine the status of the monitored systems.
Aerial apparatus have a corresponding amber hazard light that denotes that the jacking system is deployed.


When do I use the “Jake Brake”?


The Jacobs Engine Brake is an auxiliary braking device used to assist the operator in slowing or stopping the vehicle. It does this by utilizing the vehicles engine compression to slow the drive train. It is designed to be used under good road conditions. To avoid possible slipping or skidding the device should be shut off whenever road conditions could be slippery, icy, or snow covered.

When I shut down various pump discharges on our pumper water leaks out from under the pump panel.


Some pump discharges are equipped with an Auto Drain option. These discharge drains automatically close when the system is charged with water. When the discharge is closed and the pressure drops below 10 PSI the valve automatically opens thereby draining the discharge plumbing after the valve.

What are the steps in engaging the Aerial PTO ?


The Aerial PTO switch should be engaged as follows:

– Vehicle stopped with parking brake applied.
– Transmission selector in neutral
– Vehicle engine speed at base idle
– Engage PTO rocker switch.

How will I know when a diesel particulate filter (DPF) active regeneration will need to be done?


There are (3) designated warnings before possible engine or DPF damage will occur.

– The first indication a regeneration process is needed will be a solid illuminated REGEN lamp. Once the first stage is reached it is expected you will have 4 to 6 hours before the second warning stage.

– If no action is taken, the second stage warning indication will be a flashing illuminated REGEN lamp. It is expected that you will have 2 to 4 hours before the third warning stage.

– If no action is taken, the third stage warning indication will be a solid illuminated REGEN lamp and an illuminated CHECK ENGINE lamp. At this stage you will have 1 to 2 hours before the STOP ENGINE lamp is illuminated

– Summary, from the first stage (REGEN lamp solid) to the last stage (STOP ENGINE lamp solid) it is anticipated to be 8 hours plus.

Can I do an Active Regeneration anytime?


No. Active Regeneration should only be done when the REGEN lamp is illuminated (Solid or Flashing).

– Most emergency vehicles require active regeneration to remove the soot. There are two methods:

– Stationary (parked) regeneration 30 to 60 minutes.

– Mobile regeneration (driving the vehicle at highway speed) 30 minutes average.


Why do my warning lights and light bar draw more amps than they did when the truck was new?

Answer: As the lights get older the motors and gears get worn and it takes more amps to move them. The way to correct the problem is to upgrade to LED lights. We can quote you on a complete upgrade for your truck. Contact our Service Department for pricing.