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Please complete the form with as much information as possible. This will allow us to custom configure the CTI System for your application.

  1. The CTI System requires dry, clean air for operations below freezing temperatures.
    The total inflation time is dependent upon the capacity of the air compressor, and the size and number of tires on the vehicle.

  2. All trucks are required to have CTIS-ready axles meaning thereby that the wheel hubs have a built in air passage. The CTIS operation (Tire inflation and deflation) will be affected by the size of this air passageway. The larger the passage, the higher the volume of air flow and faster is the deflation. Specifying the approximate size of the air passage (Φ 8 mm, Φ10 mm, Φ 12 mm etc) helps select the optimum wheel valve hardware.

  3. Most truck application requires a single channel system, meaning that all tires (front and rear axles) have the same tire pressure for a given terrain. Between loaded and unloaded condition, if the weight distribution on the front and rear axles varies, one may consider a two channel system; one set of tire pressures in the front axles and a different set of tire pressures in the rear axles. A tractor and trailer combination may utilize a three (3) channel system; two channels for the tractor and the third channel for the trailer. The four (4) channel system was designed for a 4 x 4 vehicle where there was a need to check, control and regulate the air flow to individual tires or two wheels at a time or all four (4) wheels at a time. Effectively, longer vehicles with or without a trailer can also be a candidate for a four (4) channel system.

  4. A two, three and four channel system means that a group of tires (front and rear axles) have different tire pressures. A two channel Sequential system includes a single manifold unit that adjusts the pressure in both groups of tires; one channel at a time (in sequence).  The sequential system is lower in cost but has longer deflation time. There is also a two channel system that allows inflation/deflation of both groups of tires simultaneously utilizing two separate manifolds one for each channel.


  1. If the vehicle is operated with a large variation in axle load due to the mission operation, the tire pressure should be adjusted according to the varying load to maintain a uniform tire foot print on the ground. For such applications, the operating axle load data should be considered for selection of the tire pressure. The load select feature is available for single, dual or three channel systems.

  2. For an additional CTIS cost, there are two communication protocols available: SAE J1708 and SAE J1939. Communication interfaces such as RS485 or RS232 are also available upon request.

  3. For vehicle programs that have trucks where each of the truck configurations have a different tire-pressure setting, adding the CTIS Multi Function Switch Option can realize substantial savings for the truck manufacturer by integrating all the tabulated tire pressure settings in the memory of a single CTIS Controller. Configuring this CTIS Controller for a specific truck, the user simply positions a rotary switch mounted on the back of the Controller to the desired position.  In other words, the same CTIS Controller can be used for as many as six  different truck configurations.

  4. The installation of the CTI System hardware requires that the Controller be located around the driverís seat; dash or bracket-mounted for easy access to the CTI Control switches, and that the Manifold be mounted in or around the frame rails in the approximate center of the first and last axle served by the CTIS. Measure the length of the interconnecting harness path between the CTIS Controller and the Manifold. In case the harness is routed thorough the floor with a Bulkhead connector, measure the two separate lengths; the Bulkhead connector to the Controller inside and the Bulkhead to the Manifold outside.


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