Important!

This replacement procedure can be used for:
SEAT Leon Hatchback (1M1) 1.6, SEAT Leon Hatchback (1M1) 1.9 TDI, SEAT Leon Hatchback (1M1) 1.9 TDI, SEAT Leon Hatchback (1M1) 1.4 16V, SEAT Leon Hatchback (1M1) 1.8 20V T, SEAT Leon Hatchback (1M1) 1.9 SDI, SEAT Leon Hatchback (1M1) 1.8 20V T 4, SEAT Leon Hatchback (1M1) 1.6 16 V, SEAT Leon Hatchback (1M1) 2.8 Cupra 4, SEAT Leon Hatchback (1M1) 1.9 TDI, SEAT Leon Hatchback (1M1) 1.8 T Cupra R, SEAT Leon Hatchback (1M1) 1.8 T Cupra R, SEAT Leon Hatchback (1M1) 1.9 TDI Syncro, SEAT Leon Hatchback (1M1) 1.9 TDI, SEAT Leon Hatchback (1M1) 1.9 TDI, SEAT Leon Hatchback (1M1) 2.8, SEAT Leon Hatchback (1M1) 1.6, SEAT Leon Hatchback (1M1) 1.8 20V … View more

The steps may slightly vary depending on the car design.

How to change front suspension arm on SEAT LEON 1M1 [TUTORIAL AUTODOC]

All the parts you need to replace – Control Arm for Leon Hatchback (1M1) and other SEAT models

Suspension arm

        Suspension arm for Leon I Hatchback (1M1) Petrol (100 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Petrol (125 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Diesel (90 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Diesel (110 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Petrol (75 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Petrol (180 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Diesel (68 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Petrol (180 hp)
      
        Suspension arm for Leon I Hatchback (1M1) Petrol (105 hp)

Replacement: front lower arm – Seat Leon 1M1. Tools you'll need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner
                      
                        Ceramic grease
                      
                        Copper grease
                      
                        Torque wrench
                      
                        Combination spanner #18
                      
                        Combination spanner #19
                      
                        Drive socket # 13
                      
                        Drive socket # 16
                      
                        Drive socket # 18
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Tap wrench
                      
                        Crow bar
                      
                        Ball joint puller
                      
                        Rubber mallet
                      
                        Hydraulic transmission jack
                      
                        Wheel chock

Buy tools

Replacement: front lower arm – Seat Leon 1M1. AUTODOC experts recommend:

The replacement procedure is identical for the left and right lower control arms.
All work should be done with the engine stopped.

Replacement: front lower arm – Seat Leon 1M1. Take the following steps:

Step 1

Secure the wheels with chocks.

Step 2

Loosen the wheel bolts. Use wheel impact socket #17. Use a tap wrench.
Step 3

Raise the car.

Replacement: front lower arm – Seat Leon 1M1. Tip:
If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.
Step 4

Unscrew the wheel bolts.

AUTODOC recommends:
To avoid injury, hold up the wheel when unscrewing the bolts.
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 stabilizer link to the control arm. Use a drive socket #16. Use a ratchet wrench.
Step 8

Remove the fastening bolt.
Step 9

Unscrew the fastener connecting the ball joint to the steering knuckle. Use a combination spanner #19.
Step 10

Unscrew the front fastener of the control arm. Use a drive socket #18. Use a ratchet wrench.
Step 11

Unscrew the rear fastener of the control arm. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 12

Remove the fastening bolts.
Step 13

Remove the fastening nut.
Step 14

Disconnect the ball joint from the steering knuckle. Use a ball joint puller. Use a crowbar.
Step 15

Remove the control arm. Use a crowbar.
Step 16

Clean the suspension arm mounting seats. Use a wire brush. Use WD-40 spray.
Step 17

Install the new control arm. Use a rubber mallet.
Step 18

Install the fastening bolts.
Step 19

Connect the ball joint to the steering knuckle.
Step 20

Install the fastening nut.
Step 21

Support the steering knuckle. Use a hydraulic transmission jack.

Replacement: front lower arm – Seat Leon 1M1. AUTODOC experts recommend:
For tightening the fasteners correctly, you have to jack up the suspension components to their working position.
Step 22

Tighten the fastener connecting the ball joint to the steering knuckle. Use a combination spanner #19. Use a torque wrench. Tighten it to 45 Nm torque.

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 23

Tighten the front fastener of the arm. Use a drive socket #18. Use a torque wrench. Tighten it to 70 Nm torque.+90°

Replacement: front lower arm – Seat Leon 1M1. AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 24

Tighten the rear fastener of the control arm. Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 70 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 25

Remove the support from under the steering knuckle.

Replacement: front lower arm – Seat Leon 1M1. Professionals recommend:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms.
Step 26

Install the fastening bolt.
Step 27

Tighten the fastener connecting the sway bar link to the suspension arm. Use a drive socket #16. Use a torque wrench. Tighten it to 30 Nm torque.

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 28

Tighten the fasteners connecting the ball joint to the control arm. Use a drive socket #13. Use a torque wrench. Tighten it to 20 Nm torque.+90°

Replacement: front lower arm – Seat Leon 1M1. Tip from AUTODOC experts:
Important! Be sure to use new fasteners.
Step 29

Treat all joints of the arm. Use copper grease.

Step 30

Clean the wheel rim mounting seat. Use a wire brush.
Step 31

Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 32

Clean the brake disk surface. Use a brake cleaner.
Step 33

Install the wheel.

AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. Seat Leon 1M1
Step 34

Screw in the wheel bolts. Use wheel impact socket #17. Use a ratchet wrench.
Step 35

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 120 Nm torque.
Step 36

Remove the jacks and chocks.

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