One caliper pin has rubber because it serves a different purpose than the other. The pin without rubber is used to support and move the caliper, whereas the one with rubber is there to absorb vibration, reduce noise and provide additional cushioning for the system as a whole. This helps protect parts from excessive shock or wear due to movement of components within the brake … [Read more...] about Why Does One Caliper Pin Have Rubber
What Type of Refrigerant is in My Car
The type of refrigerant in your car is R134a. This is a hydrofluorocarbon (HFC) that was developed as a replacement for the ozone-depleting substances such as CFCs and HCFCs found in earlier models of cars. It has been widely used since 1994, when it became the U.S. Environmental Protection Agency’s approved choice for automotive air conditioning systems. R134a provides several … [Read more...] about What Type of Refrigerant is in My Car
How to Test Transmission Valve Body
To test a transmission valve body, you will need to remove it from the vehicle and place it on a work bench. Then, use an ohm meter to check the resistance of each solenoid. If any are out of spec, they should be replaced. Next, check for any signs of damage or wear. Make sure all gaskets and seals are intact; replace as necessary if needed. Finally, inspect the wiring … [Read more...] about How to Test Transmission Valve Body
How to Recover R134A With a Vacuum Pump
1. Start by connecting the vacuum pump to your system. Ensure that all of the valves are closed, and then connect the red hose from the pump to a container large enough to hold any recovered liquid refrigerant. 2. Next, open up both high and low-side service ports on your system with an appropriate wrench or valve core tool, then attach adapters for each port. Connect one end … [Read more...] about How to Recover R134A With a Vacuum Pump
How to Calibrate Blend Door Actuator
To calibrate a blend door actuator, first locate the actuator in your vehicle’s cabin. It is located near the heater box and it looks like a small motor with two wires coming out of it. Then remove the electrical connector from this device and connect it to an ohmmeter or multimeter. Set the meter to measure resistance, then turn on the car's ignition switch so that power flows … [Read more...] about How to Calibrate Blend Door Actuator