How to change front brake discs on Mercedes W245 – replacement guide
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Recommended replacement interval for the part category Brake disc : 50000km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208),
MERCEDES-BENZ B-Class (W245) B 200 TURBO (245.234),
MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208),
MERCEDES-BENZ B-Class (W245) B 180 CDI (245.207),
MERCEDES-BENZ B-Class (W245) B 180 NGT (245.233),
MERCEDES-BENZ B-Class (W245) B 170 NGT (245.233)
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The steps may slightly vary depending on the car design.
How to change front brake discs on MERCEDES-BENZ B200 (W245) [TUTORIAL AUTODOC]
All the parts you need to replace – Brake Discs for B-Class (W245) and other MERCEDES-BENZ models
Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Step 12
Remove the brake pads.
Step 13
Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 14
Unscrew the caliper bracket fastening. Use a drive socket #18. Use a tap wrench. Use a ratchet wrench.
Step 15
Remove the caliper bracket.
Step 16
Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
Step 17
Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.
Step 18
Remove the brake disc.
Step 19
Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 20
Install the brake disc.
Step 21
Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 Nm torque.
Step 22
Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
AUTODOC recommends:
Replacement: brake discs – Mercedes W245. After applying the spray, wait a few minutes.
Step 23
Install the brake caliper bracket.
Step 24
Tighten the brake caliper bracket. Use a drive socket #18. Use a torque wrench. Tighten it to 115 Nm torque.
Step 25
Treat the brake caliper piston. Use a brake cleaner.
Replacement: brake discs – Mercedes W245. Tip from AUTODOC:
After applying the spray, wait a few minutes.
Step 26
Press in the brake caliper piston. Use brake caliper wind back tool.
Step 27
Install the brake pads.
Step 28
Connect the brake pad wear sensor plug.
Step 29
Install the brake caliper and fix it. Use a drive socket #13. Use a combination spanner #17. Use a torque wrench. Tighten it to 35 Nm torque.
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: brake discs – Mercedes W245. After applying the spray, wait a few minutes.
Step 32
Install the wheel.
Replacement: brake discs – Mercedes W245. Tip from AUTODOC experts:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 33
Screw in the wheel bolts. Use wheel impact socket #H12.
Step 34
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #H12. Use a torque wrench. Tighten it to 130 Nm torque.
Step 35
Remove the jacks and chocks.
AUTODOC recommends:
Important! Replacement: brake discs – Mercedes W245. Check the brake fluid level in the reservoir and top up if necessary.
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