Remove/install rear axle brake caliper - AR42.10-P-0080W
MODEL 166, 172
| Remove/install | |||
| Risk of injury to skin and eyes caused by handling hot or glowing objects. | Wear safety gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes. | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | AS42.50-Z-0001-01A | |
| Notes on self-locking nuts and bolts | AH00.00-N-0001-01A | ||
| Brake fluid notes | AH42.50-P-0001-01A | ||
| Notes on repairs to brake system | AH42.00-P-0003-01A | ||
| Notes on installing brake wear indicator contact sensors | AH42.10-P-0003-01CW | ||
| 1 | Move rear axle brake pads (10) into assembly position | AR42.10-P-1700-02W | |
| 2 | Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit | ||
| 3 | Open engine hood and raise to vertical position | Model 166 | AR88.40-P-1000GQ |
| Model 172 | AR88.40-P-1000V | ||
| 4 | Remove cover over left suspension strut tower | Model 166 | |
| Clean | |||
| 5 | Clean the area around the cap of the brake fluid reservoir | Cleaner from package | *BR00.45-Z-1028-04A |
| 6 | Unscrew cap of brake fluid reservoir and extract some brake fluid | ||
| 7 | Detach rear complete wheels | Model 166 | AP40.10-P-4050EW |
| Model 172 | AP40.10-P-4050V | ||
| 8 | Disconnect right rear brake wear sensor (S10/4) from electrical connector of right rear brake pad wear sensor (S10/4x1) | on right brake caliper (3) | |
| 9 | Remove bolt (4) and remove electrical connector of the right rear brake pad wear sensor (S10/4x1) | on right brake caliper (3) | |
| *BA42.10-P-1007-12L | |||
| *BA42.10-P-1003-12J | |||
| 10 | Unclip electrical line (7) on retaining frame (8) | Model 172, when replacing the brake caliper (3) | |
| 11 | Disconnect electrical connector (14) from left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2) | ||
| 12 | Remove bolts (1) from guide pin (5) | ||
| *BA42.10-P-1004-12L | |||
| *BA42.10-P-1004-12J | |||
| 13 | Detach brake hose (6) from brake caliper (3) | When replacing brake caliper (3). The brake caliper (3) must not run empty. Otherwise the brake caliper (3) must be replaced. |
|
| Model 166 | AR42.10-P-0013GZ | ||
| Model 172 | AR42.10-P-0013V | ||
| Figure | |||
| 14 | Remove brake caliper (3) from brake caliper support (2) | ||
| 15 | Press back brake piston using pusher tool (01) | When reusing brake caliper (3) |
|
| Fig 3 | |||
| 16 | Remove left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2) from brake caliper (3) When replacing brake caliper (3) | AR42.20-P-0600W | |
| 17 | Remove brake pads (10) from brake caliper support (2) | When removing the brake caliper support (2) |
|
| 18 | Pull right rear brake pad wear sensor (S10/4) out of brake pad (10) | When replacing the brake pads (10) on the right hand side of vehicle |
|
| 19 | Remove spring plates (11) from brake caliper support (2) | When removing the brake caliper support (2) | |
| 20 | Unscrew bolts (15) and remove brake caliper support (2) | When removing the brake caliper support (2) | |
| *BA42.10-P-1005-12L | |||
| *BA42.10-P-1001-12J | |||
| Checking, measuring | |||
| 21 | Check condition of brake pads (10) and gauge degree of wear | AP42.10-P-4253A | |
| 22 | Check condition of brake disks (9) and gauge degree of wear | Model 166 | AP42.10-P-4258GQ |
| Model 172 |
AP42.10-P-4258V | ||
| Model 166 | AR42.10-P-0220GZ | ||
| Model 172 except 172.475 | AR42.10-P-0220W | ||
| Model 172.475 | AR42.10-P-0220MMI | ||
| 23 | Check brake caliper (3) and dust boot (13) on brake piston for damage | ||
| 24 | Check boots (12) for damage and correct seating and check guide pin (5) for ease of movement | ||
| Clean | |||
| 25 | Clean contact surfaces of the brake pads (10) on brake caliper (3) and brake caliper support (2) using a rag | ||
| Cleaner from package | *BR00.45-Z-1028-04A | ||
| 26 | Install in the reverse order | ||
| Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work | Before starting engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system. | AS42.50-Z-0002-01A | |
| 27 | Depress brake pedal several times until brake pads (10) rest against brake disks (9) | ||
| 28 | Check fluid level in brake fluid reservoir, and correct if necessary. | Model 166 | AP42.10-P-4210GZ |
| Model 172 | AP42.10-P-4210V | ||
| 29 | Carry out brake test on the test stand | AP42.00-P-4290BA |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 166 | ||
|---|---|---|---|---|
| BA42.10-P-1004-12L | Bolt, brake caliper to guide pin | Nm | 35 | |
| BA42.10-P-1005-12L | Bolt, brake caliper support to wheel carrier | Stage 1 | Nm | 60 |
| Stage 2 | ∠° | 45 | ||
| BA42.10-P-1007-12L | Bolt, feed line for brake pad contact sensor to brake caliper | Nm | 8 | |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 172 | |
|---|---|---|---|
| BA42.10-P-1001-12J | Self-locking bolt, brake caliper to wheel carrier | Nm | 110 |
| BA42.10-P-1003-12J | Bolt, brake lining contact sensor to brake caliper | Nm | 8 |
| BA42.10-P-1004-12J | Guide pin on caliper support | Nm | 28 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Cleaner from package | Adolf Wurth GmbH & Co. KG |