Replacing the transverse arm of the car's rear suspension

Performing the following procedures without first removing the anti-lock braking system wheel speed sensor may result in an open circuit in the wiring harness if the harness is taut by mistake

Before performing the following operations, remove the anti-lock braking system wheel speed sensor (hub side) and mount it in a suitable location where the sensor will not be mistakenly damaged during maintenance.

Rear upper arm: 1 - ABS wheel speed sensor; 2 - parking brake cable; 3 - bolt (lower part of the rear shock absorber); 4 - bolt (front of the longitudinal rod); 5 - bolt (rear upper arm); 6 - rear upper arm; 7 - rear upper arm bushing

Preparing the car for the task

Remove the anti-lock braking system wheel speed sensor.

Disconnect the parking brake cable.

We install stops under the front wheels and hang out the back of the car

Remove the wheel from the side of the task being performed

Installing the jack for the longitudinal link

Support the longitudinal link with a jack (fig. 2)

Mazda 3 upper arm replacement

Using a 17 socket wrench, unscrew the bolt securing the lever to the subframe

Mazda 3 upper arm replacement

Using the same wrench, unscrew the bolt securing the upper rear transverse arm to the trailing arm and remove the arm

Mazda 3 upper arm replacement

Install the new lever in reverse order

Orient the lever with the inscription IN in the direction of the center of the car

We finally tighten the lever mounting bolts by lowering the car on the wheels

Bolt tightening torque 90-122 Nm

After assembly, we check and, if necessary, adjust the angles of the rear wheels

Replacing the rubber-metal bushings of the lever

Pushing out the upper arm bushing

Press out the upper arm bushing using the special tools (fig. 3)

Installation

Marking the new bushing

Mark the new bushing as shown in Figure 4

Pressing in the new upper arm bushing

Press the sleeve according to the marking using special tools (Fig. 5)

Checking the Height of the Pressed Sleeve

Check that the distance A-B is 14.0-16.0 mm (Fig. 6)

Install other components in the reverse order of removal.