Front door interior panel introduce

The part names of the interior panel of the left front door, from top to bottom, are: left front door glass, left front mirror, left front glass sealing strip, those with decorative strips on the outside are called left front door decorative strip. The left front door is decomposed into left front door, mirror, glass, door lock, door glass controller, door glass elevator, mirror controller, left front door interior panel, handle, etc. The car is structurally divided into frame, outer panel, chassis, engine, interior, glass, tire, and is functionally divided into electrical system and driving system Driving system, oil and gas system, filtration system, control system, cooling system)

Installation method of front door interior panel/rear door interior panel

1、 Prepare tools and work vehicles or workbenches. 2. Open the car door to its maximum size for easier operation of the hinge support. Place a bracket at the lower edge of the car door to support the weight of the door and protect it. Unscrew the window glass. In this example, the disassembly of the car door will be mainly introduced. If the car door needs to be disassembled before disassembly, the outdoor rearview mirror should be removed. 3. Disconnect the wire connector between the car door and the vehicle body to separate the door wiring harness, If necessary, first remove the inner decorative parts on the pillar. 4. Remove the clamp at the bottom of the door stopper locking pin and extract the locking pin from the hole. 5. Hold the door and remove the connecting bolt of the door hinge support. After removing the door, place it vertically on a padded surface. If only the door needs to be removed for maintenance, it is recommended to complete the disassembly of the door by removing the hinge connecting bolt instead of the fixed bolt, This can reduce the adjustment work of the car door. 6. Check the sleeve of the car door chain, replace it if necessary, lubricate the hinge joint, place the car door back on the hinge support, and reinstall the bolts. 7. Connect the door limiter, install the stop lock pin and locking plate, and connect the electrical plug. 8. Close the car door, check if it is aligned, and if there is no problem, tighten the hinge fixing bolts. 9. Note that if the front door is disassembled and assembled, it is necessary to install the rearview mirror back

BMW Z4 introduce

The basic structure of the Z4 suspension system comes from the BMW new 3 series, and some structural improvements have been made to make it more dynamic to operate than the previous suspension. The BMW Z4 is a focus coupe under the BMW brand, and its design is improved on the basis of the Z3. The long engine hood and very comfortable seats almost fall on the rear axle are very close to the back. The upward sloping tail of the new car is more attractive, coupled with clear concave and convex lines on both sides, Make the new car look more imposing than the Z3. These eye-catching lines are combined with first-class sports car performance: long wheelbase, short overhang, wide wheelbase, and a relatively low center of gravity