Hydra-Test SOL The Hydra-Test SOL is used for checking the conditions of solenoids of various automatic transmission manufacturers. Cottingham Engineering designed a number of various solenoid test blocks making it possible to run tests for the majority of most popular makes on the present-day market. The unit is powered by a special version of the HTC-K Controller adopted for solenoid testing. ‹ The Hydra-Test SOL can operate with either hot or cold oil – it was built based Valve Body Rebuilders™ feedback and requests to assist in any tasks that they encounter. It has an improved capacity single tank with a fast drain rate. The pump and hydraulics have been redesigned to facilitate higher temperatures. In addition, the input pressure is controlled electronically. Click here to see the demonstrative video on the Hydra-Test SOL.
Solenoid Testing Modes
Electric test of the solenoid
The electrical continuity (open or short circuit) and resistance of the solenoid is tested by observing the values of the current consumed by it (PASS/FAIL check)
The solenoid is tested by manually varying the operating voltage duty cycle (0-100%) and the inlet pressure, while monitoring the current, pressure, and temperature.
Automatic mode (Scenario)
The solenoid switches automatically according to a user-defined test scenario. During the scenario, the average voltage (controlled by duty cycle), the rate at which the voltage increases or decreases with time, as well as duration of any static voltage are sequenced automatically. The user can choose a prewritten sequence (script) from the extensive library or create their own.
Automatic mode 1
Depending on the user settings, this mode partially or completely repeats the specified scenario (script) in a cyclic mode. It allows repetition indefinitely as all parameters are switched automatically. The mode is stopped by the operator. It is used for long-term solenoid testing. In this mode, it is possible to display current and pressure parameters of the solenoid in real time with overlay of the reference result from the library. Any test results (for example, “before” and “after” solenoid repair) can be used as a reference.
Automatic mode 2
This mode is similar to the mode 1. It is used when two independent parts have to be “looped” in time in the test scenario (script). For the first half Automatic mode 1 is used, for the second half – Automatic mode 2 is used. In this mode, it is possible to display the current and pressure parameters of the solenoid in real time with the overlay of the reference result from the library.
It is available in all automatic test modes. Live displays of the values of the current and pressure are shown on the chart in real time.
Library of reference results
The vast experience of the Hydra-Test team collected over the years has allowed us to accumulate a large database of test results. Based on this, we have created an extensive library of reference results, which include tests for all of the common automatic transmission models available in the market today. This library allows new users with at a novice level of test experience to successfully be able to test and qualify solenoids. As for professionals, they are given a vast library good test samples and statistics for scrutiny for any unusual “non-standard” behavior of tested solenoids. This significantly reduces the rejection of “suspicious” solenoids, giving the operator confidence in the results that they achieve. The reference results provided with the purchase are also templates for users to create their own library from, making the process simple and entertaining.
For high-precision measurements of the solenoid test parameters, the Hydra-Test team employs an ADC with 12 bits of resolution, which allows current measurements with an accuracy of 0.001 Amps and pressure measurements with an accuracy of 0.10 PSI (0.005 bar).
The standard sampling period is 0.001 seconds (1 kHz), allowing you to track even the smallest changes in the behavior of the solenoid under test.
As an option, the sampling frequency of current readings can be increased to 50 kHz. The standard operating voltage frequency range of the solenoid is 100 Hz to 3 kHz. An optional expansion of up to 50 kHz is possible.
The standard duty cycle duration can be changed in steps of 1%, with 0.5% being optionally available. An optional a hydraulic fluid temperature sensor with the measurement accuracy of 0.2 °F (0.1 ℃) can be added to the system.
ADD-ONS: Ultrasonic Cleaner
An additional ultrasonic cleaner can be added to your HT-SOL 25 test machine to clean solenoids before you test.
Cleaning them before testing will make sure your testing process is not influenced by debris and dirt of dirty solenoid.
It will also keep the fluid in your machine cleaner and decrease the frequency you need to change the fluid.
Hydra-Test offers an ever-increasing line of solenoid test blocks that allow you to test each solenoid hydraulically, just like it performs in the vehicle while being able to see leaks, potential wear, or other functional issues that would be impossible otherwise. Our dedicated engineering staff is continually developing new test blocks to cover the latest transmission solenoids on the market before they get to your shop. These blocks are made from precision machined aluminum to keep them light and easy to install in the machine. High quality quick connect hose connections to the machine allow for leak free and secure connections for accurate readings.