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Setting Suspension Torque and Angle Specs
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By Counterman
link hidden, please login to viewreleased two new suspension bushing tool kits for on-vehicle R&I of single-wrap and double-wrap heavy-duty suspension bushings – Suspension Bushing Kit with Pump and Suspension Bushing Adapter Kit. Both tool kits replace worn-out, rusted and frozen heavy-duty suspension bushings faster and easier without risking heat or other damage by providing a 25-ton capacity, the company said. Each kit saves hours on each job by making quick work of Pivot and D-pin bushing R&I. OTC’s latest suspension bushing tool kits include:
4247-FR Suspension Bushing Kit with Pump: Includes air/hydraulic pump, 25-ton hydraulic cylinder, hose with couplers, complete puller leg/plates and adapter set for double-wrap leaf springs.
4254-FR Suspension Bushing Adapter Kit: For use with OTC service sets; 4247, 4275, 4261 or 4263 with 4106A 25-ton ram.
OTC said each suspension bushing kit features Hendrickson rear suspensions, including Primaax EX, Comfort Air and FCCC V-Ride Pivot and D-Pin suspension bushings, and freightliner rear suspensions, including double and single-wrapped FAS II Airliner rear suspension bushings. Both also include centering adapters to align tool and bushing for clean installation. Both are available through OTC distribution partners and resellers.
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By abenleulmi
Description: The program is designed to receive and display diagnostic information about engine operation via the OBD-II interface.
To connect, you need an OBD-II bluetooth adapter.
The program itself is able to receive all the information via the OBD2 interface.
There are 15 customizable screens. You can display information in the form of graphs, digital values, dial. There are several predefined widgets, you can create your own.
The program is able to display the current parameters of the engine, display and decode error codes, erase errors from the car's ECU (turn off the check engine light on the dashboard).
a detailed description of the standard parameters is available on the OBD-II_PIDs wikipedia.
You can set alarms for various sensor values, for example, coolant temperature, engine speed, speed.
You can download or customize the extended set of OBD2_PIDs defined by the car manufacturer.
The program can automatically send logs of sensor values to the web server and then you can see the route and sensor values at different times.
Some of the program's features:
• Measurement of torque.
• Reading and display of information about the temperature of the engine and passenger compartment.
• Customizable panels.
• Determination of speed and location using a GPS tracker.
• Sending your routes by email or social network.
• Reading and display of vehicle errors, as well as their reset.
• Resetting the Check-Engine.
• Various plugins for Torque Pro.
• Lots of different themes.
• Compass with GPS support.
• Connections of third-party applications, simple interface.
What's new:
A small update before the next update cycle starts:
* Adjustment of a timer to fix a small startup issue on some obscure android devices
Type: Modification
Version: 1.12.100
Download Link:
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By Counterman
link hidden, please login to viewannounced the debut of the LuK TorCon 6L80, which the company said is “the only all-new, never remanufactured torque converter available in the independent aftermarket.”
link hidden, please login to view has a design proven to last up to five times longer than rebuilt torque converters, according to the company. link hidden, please login to viewalso said that unlike remanufactured options that demand the labor-intensive process of acquiring and stocking model-specific cores, the Luk TorCon 6L80 requires only a straightforward match to the transmission, saving time and effort for customers. The fully furnaced brazed fins not only enhance heat dissipation, but also prevent premature wear, ensuring longevity and reliability, according to Schaeffler. The contamination-free manufacturing process is backed by rigorous 100% pressure and lockup testing, as well as precision balancing.
The TorCon 6L80 (TC0017 24247371) is compatible with 2007-2020 GM trucks, vans and SUVs with a 5.3L, with a current VIO of 6,211,856, according to Schaeffler.
Schaeffler added it “offers a solution to the common issue of core returns and eliminates the risks associated with remanufactured parts such as blemishes created during service, ensuring superior quality and reliability.”
“As technology improves and torque converter designs are changing, the torque converters in the transmissions of today are becoming much more challenging to rebuild. Therefore LuK is offering a complete assembly, with built in quality that ensures a consistent performance in each unit.” says Rob Steinmetz, product manager. ”Years ago, the LuK brand was first-to-market with new service clutch alternatives to the rebuilt options previously available in the aftermarket. Replacement clutches are now almost exclusively new, not rebuilt. The launch of our new, not rebuilt torque converters stands as a prime example of the company’s continued commitment to changing the landscape of the aftermarket.”
In the coming months, the company plans to release additional SKUs as it continues to expand product offerings.
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By Counterman
Most active suspension systems come in many styles with fancy names like airmatic, dynamic or advanced. And, it doesn’t matter if it is a BMW, Mercedes or Jaguar, an active suspension must be able to react to three critical pieces of information.
First, it must act on information from the ABS and stability control system. Second, it must measure body movement. Third, it must detect the extent and rate of suspension movement. With these three pieces of information, the suspension can actively adjust the compression and rebound of the shock or strut.
Why would an engineer or automaker include this feature on a vehicle? An active dampener allows for a ride without compromise. The three inputs can be used to detect a rough road or an emergency situation where body roll could change the stability of the vehicle.
Electronic Shocks/Struts
Electronically adjustable shocks and struts use conventional mono-tube and twin-tube oil-filled dampeners. The rods, gas chambers and piston have the construction of passive units. Like a passive unit, they can fail if they leak, the gas escapes or the rods are bent. They can also wear out like a conventional unit as the oil inside breaks down and surfaces in the bore wear.
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What makes these units unique are the valves with their variable orifices. These valves regulate the flow between the chambers on either side of the piston. The piston in some units, however, does not have any valving.
The size of the orifices controlled by electromagnetic solenoids can control the valves very quickly. The electrical connections and solenoids are typically found outside the body and act on the valves inside the unit using magnetism. The signal to the solenoid is pulse-width modulated and varies the voltage to change the size of the orifice.
The valves and solenoids can’t be serviced or separated from the shock or strut. If a problem is detected with the system, the valves go into a fail-safe position that is fixed, and the system becomes passive. The driver is then alerted with a message or light on the instrument cluster or message center.
Most systems will perform a circuit check when the system wakes up. This typically involves sending a signal to fully open and close the valve. If the system detects an open, short or a voltage outside of the specifications, it will set a code.
Measuring Wheel Movement
Ride-height sensors not only measure the position of the suspension, but also the rate of movement. They are supplied with a voltage of around 5 volts. The signal voltage is changed as a magnet moves past a coil. Most sensors have three wires – ground, power and signal.
Internally, it is difficult to damage one of these sensors. Externally, however, the linkage that connects the sensor to the suspension arm can be damaged. Additionally, the connector can be damaged and cause a short or open that sets a code. If one of these sensors is replaced, it must be calibrated after it is installed.
Ride-height sensors are sometimes called suspension-position or wheel-displacement sensors. The data from the sensor is used to measure the movement of the suspension. By knowing how far and fast the suspension is moving, the module can use the information to determine the size of the orifice in the dampener to control compression and rebound. These sensors should be calibrated if a sensor is replaced, a module is reprogrammed or if the battery dies.
Measuring Body Movement
Accelerometers mounted to the body measure changes in the ride. These accelerometers are typically mounted to the strut towers. These sensors output information as gravitational forces, or “G-force,” to a module. Changes in body roll due to cornering will produce lower G-force than a pothole would.
Information from the accelerometers is coupled with data from the ride-height sensor, steering sensor and other inputs by a computer processor in a module. The module can determine if the vehicle is going around a corner or traveling down a bumpy road. With this datastream, the valving inside the dampener can be adjusted in milliseconds for the best control and ride quality.
The accelerometers on the body differ from vehicle to vehicle. Some manufacturers mount the sensors under the headlights, on strut towers and near the taillights. More sophisticated systems use more than two accelerometers mounted in various locations.
link hidden, please login to view Control Module
The control module for the electronic dampeners needs more than the movement of the wheels and body to determine the correct settings for the dampeners. The module uses and shares information with the anti-lock braking system, engine control module and instrument cluster. This information is typically shared on the high-speed CAN serial data bus. On some BMW 7 Series models, the information is shared on the fiber-optic Flex Ray bus.
With all this information, the module can do some amazing things with the adjustable dampeners. Problems like nosedive under braking, torque steer and understeer on FWD vehicles can be minimized. If the vehicle has air ride, the volume and pressure inside the air springs can also be tuned along with the valving in the dampeners to optimize ride quality and control.
Most active suspension systems will perform a circuit check when the system wakes up. The system will send 5 to 12 volts to the actuators and ride height sensors. The system is also looking at the resistance in the circuit, and the amount of voltage dropped. If the system detects an open, short or voltage outside of the specifications, it will set a code. Next, the control module will fully open and close the valves in the struts. If the system does not detect any irregularities, the system will go into an active mode.
Looking for these self-diagnostic signals can be performed using a meter. You may have to use a bypass harness or back probe the connector. If the system detects any problems, the system will go into a passive mode.
Sometimes servicing an active suspension is like rebuilding an engine with a new crankshaft and reusing the old bearings and valve springs. When a new active strut is reassembled with the old and tired spring and strut plate, the results can be less than desirable.
Upper strut mounts and bearings can be hammered to death. The upper strut mount essentially supports the vehicle weight and counters both braking and acceleration torque. Most mounts are sandwiches of rubber, metal and bearings. Over time, the rubber can lose its ability to isolate the suspension from the body. Bearings can also seize and bind, causing the vehicle to have steering problems.
Look up the ride height specifications and measure ride height front and rear, and on both sides of the vehicle. If ride height is less than specifications, the problem is most likely one or more weak springs that should be replaced. Springs should typically be replaced in pairs to maintain the same ride height side-to-side.
Weak springs also are more likely to fail. The springs on many late-model vehicles are thinner to reduce weight and have an outer plastic coating to protect the metal from corrosion. If this outer coating is cracked or damaged, corrosion can form a hot spot that eats into the spring, weakens it and eventually causes the spring to break.
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