Important!

This replacement procedure can be used for:
MAZDA 3 Saloon (BK) 2.0, MAZDA 3 Saloon (BK) 1.6 DI Turbo (BK12Y), MAZDA 3 Saloon (BK) 2.0 (BKEP) … View more

The steps may slightly vary depending on the car design.

How to change rear springs on MAZDA 3 BK TUTORIAL | AUTODOC

All the parts you need to replace – Springs for 3 Saloon (BK) and other MAZDA models

Coil spring

        Coil spring for 3 Saloon (BK) Petrol (150 hp)
      
        Coil spring for 3 Saloon (BK) Diesel (109 hp)
      
        Coil spring for 3 Saloon (BK) Petrol (141 hp)

Replacement: coil springs – Mazda 3 BK. Tools you might need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Combination spanner #17
                      
                        Drive socket # 17
                      
                        HEX bit no.H6.
                      
                        Wheel impact socket #19
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Crow bar
                      
                        Hydraulic transmission jack
                      
                        Wheel chock

Buy tools

Replacement: coil springs – Mazda 3 BK. Tip from AUTODOC:

Both coil springs of the rear suspension should be replaced simultaneously.
The replacement procedure is identical for the left and right coil springs of the rear suspension.
Please note: all work on the car – Mazda 3 BK – should be done with the engine switched off.

Carry out replacement in the following order:

Step 1

Secure the wheels with chocks.
Step 2

Loosen the wheel mounting bolts. Use wheel impact socket #19.
Step 3

Raise the rear of the car and secure on supports.
Step 4

Unscrew the wheel bolts.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mazda 3 BK
Step 5

Remove the wheel.
Step 6

Clean the control arm fasteners. Use a wire brush. Use WD-40 spray.

Step 7

Unscrew the fastener connecting the control arm to the rear knuckle. Use a drive socket #17. Use a ratchet wrench.
Step 8

Support the arm. Use a hydraulic transmission jack.
Step 9

Clean the shock absorber fasteners. Use a wire brush. Use WD-40 spray.

Step 10

Unscrew the lower fastener of the shock absorber. Use a drive socket #17. Use a ratchet wrench.
Step 11

Remove the fastening bolts (2 pieces).

Step 12

Detach the lower part of the shock absorber.

Step 13

Unscrew the fastener connecting the stabilizer link to the control arm. Use a combination spanner #17. Use HEX No.H6. Use a ratchet wrench.
Step 14

Remove the fastening bolt.

Step 15

Remove the support from under the arm.

AUTODOC recommends:
Replacement: shock absorbers – Mazda 3 BK. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 16

Pull down the suspension control arm. Use a crowbar.

Step 17

Remove the spring.
Step 18

Remove the rubber spring spacer.
Step 19

Install the rubber spacer on the new coil spring.
Step 20

Install the spring.

Replacement: coil springs – Mazda 3 BK. Professionals recommend:
Make sure that the coil spring is correctly positioned in its mounting seats.
Step 21

Support the arm. Use a hydraulic transmission jack.
Step 22

Install the fastening bolt. Use a crowbar.

Step 23

Tighten the fastener connecting the suspension arm to the rear knuckle. Use a drive socket #17. Use a torque wrench. Tighten it to 75 Nm torque.
Step 24

Attach the lower part of the shock absorber.

Step 25

Install the fastening bolt.

Step 26

Tighten the lower fastener of the shock absorber. Use a drive socket #17. Use a torque wrench. Tighten it to 76 Nm torque.
Step 27

Remove the support from under the arm.

AUTODOC recommends:
Replacement: shock absorbers – Mazda 3 BK. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 28

Install the fastener connecting the stabiliser link to the control arm and tighten it. Use a combination spanner #17. Use HEX No.H6. Use a torque wrench. Tighten it to 52 Nm torque.
Step 29

Treat the shock absorber fasteners. Treat all joints of the arm. Treat all joints of the stabiliser link. Use copper grease.

Step 30

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 31

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: coil springs – Mazda 3 BK. After applying the spray, wait a few minutes.
Step 32

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mazda 3 BK
Step 33

Screw in the wheel bolts. Use wheel impact socket #19.
Step 34

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #19. Use a torque wrench. Tighten it to 118 nm torque.
Step 35

Remove the jacks and chocks.

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