The wiper linkage is a crucial part for the wiper assembly to work. Overtime, this may deteriorate, rust, or snap making them useless. Then, power from the motor wouldn't be transferred to the blades cleaning your windshield. To replace your car's bad linkage, it helps if you have an idea of the type of assembly you for your car.
Car manufacturers use different styles of wiper assemblies. Each type differs from each other based on the movement of the arms and the focus target wiped on the windshield. Here are the systems available for most cars on the road:
- Tandem system: This is the most common of all styles. It uses two wiper blades that raise towards one side of the windshield in tandem ? hence the name. The two overlap near the driver's side for better visibility during driving.
- Opposed system: Similar to the tandem system, this also uses two blades to clean the windshield. The difference is that each blade rises to opposite sides, away from each other. The overlap focuses mostly on the middle. To achieve this motion, the pivot points are located towards the side.
- Single arm: This type of system uses one long wiper blade that should be able to clean the whole windshield. It comes in two subtypes: controlled and steady. With the controlled single arm, the driver is able to adjust the pivot point of the blade for a wider range.
- Driver position: This style uses one small wiper blade that only the part that's directly in front of the driver. Rarely is this type used, but it is still available on certain applications.
The linkages' placement can also differ. It can either be depressed or non-depressed. The only difference between the two is that the depressed is hidden under the hood when not in use. Non-depressed ones on the other hand are exposed.
The blades of each style move differently and can be fixed in different ways. For every type, there is a linkage designed to be fitted to a certain style.