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Home >> Mercedes Benz >> 2001 >> S500 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes -- Testing & Repair -- 215 & 220 Chassis >> Testing & Repair >> Remove/install brake pad on floating brake caliper - AR42.10-P-0160I

Remove/install brake pad on floating brake caliper - AR42.10-P-0160I

MODEL 220 

Front axle 

Fig 1: Identifying Brake Pad On Floating Brake Caliper Remove/Install Components (Front Axle)
G04849481

Rear axle 

Fig 2: Identifying Brake Pad On Floating Brake Caliper Remove/Install Components (Rear Axle)
G04849482
MODIFICATION NOTES

8.11.06 Section on repeated application of brake pedal has been added Step 16  
REMOVINGINSTALLING Remove/install     
DANGER 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
DANGER 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
NOTES Notes on repairs to brake system   AH42.00-P-0003-01A
NOTES Brake fluid notes   AH42.50-P-0001-01A
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
1 Lower brake fluid level in brake fluid reservoir down to "MIN" mark IMPORTANT In order to prevent the expansion reservoir overflowing when pressing back the brake pistons.  
2 Remove wheels    
REFER TO MAINTENANCE Remove/install wheels   AP40.10-P-4050Z
3.1 Disconnect left and right front brake pad contact sensor connectors (S10/1x1, S10/2x1) and pull contact sensors out of brake lining IMPORTANTInstallation:  Replace defective contact sensors.  
NOTES Notes on installing brake pad wear sensor contact sensors   AH42.10-P-0003-01A
3.2 Disconnect right rear brake pad contact sensor (S10/4) and pull contact sensor out of brake lining IMPORTANTInstallation:  Replace defective contact sensors.  
4 Unclip electrical feed line of contact sensor from retaining clip on longitudinal member    
5 Pry out clip (10)    
6 Detach protective caps from bolts (31c) and remove bolts (31c) IMPORTANTInstallation:  Replace bolts (31c).  
    TORQUE SPECIFICATION *BA42.10-P-1003-10G 
    TORQUE SPECIFICATION BA42.10-P-1003-12G
7 Detach brake caliper (31) with brake pads (31g) and hang up to one side NOTES Do not tension or kink brake hose. To relieve the load on the brake hose, attach the brake caliper (31) to the vehicle so that it is free of tension, otherwise the brake hose will be damaged.  
8 Remove brake pads (31g) from brake caliper (31) IMPORTANT Brake pads (31g) are to be disposed of as special waste. The local authorities can provide information regarding whether disposal is also permitted as industrial waste similar to domestic waste.    
    IMPORTANT Only brake pad kits (31g) approved by Mercedes Benz must be installed.  
    IMPORTANTInstallation:  Install brake pads (31g) without grease.  
INSPECT Checking     
9 Check brake lining thickness and brake disks IMPORTANT Replace brake pads (31g) and brake disks in complete sets if necessary.  
REFER TO MAINTENANCE Check brake lining thickness   AP42.10-P-4253A
REFER TO MAINTENANCE Inspect condition of brake disks   AP42.10-P-4258I
10 Check upper and lower bellows for damage and upper and lower guide pins for ease of movement IMPORTANT Replace defective parts.  
11 Check brake caliper (31) for leaks and dust boot for damage IMPORTANT If the brake caliper (31) is leaky or the dust boot is damaged:
 
    Install new front axle brake caliper. AR42.10-P-0070I 
    Replace rear axle brake caliper. AR42.10-P-0080I 
12 Press back brake piston using SPECIAL TOOL pusher tool (031) IMPORTANT If the brake piston is difficult to move:
 
    Install new front axle brake caliper. AR42.10-P-0070I 
    Replace rear axle brake caliper. AR42.10-P-0080I 
    IMPORTANT Check for creases forming in the dust boot:  
    IMPORTANT If the dust boot projects out beyond the brake piston after the piston is pressed back, move the dust boot into the correct position.  
    SPECIAL TOOL Fig 3
CLEAN Clean     
13 Clean contact surfaces of brake pads (31g) at brake caliper (31) NOTESInstallation:  Do not use any sharp-edged or pointed tools to prevent damage.  
14 If necessary, clean the perforation of brake disks   AR42.10-P-2260-01I 
15 Install in the reverse order    
DANGER 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
16 Operate the brake pedal several times until the brake pads (31g) contact the brake disks IMPORTANT Firm resistance should be noticeable at the brake pedal.  
17 Check brake fluid level, correct if necessary    
REFER TO MAINTENANCE Brake system - inspect fluid level   AP42.10-P-4210Z
TORQUE SPECIFICATION FRONT AXLE BRAKE CALIPER

Number Designation Model 220 except model 08/18/074/174/179, model 220 without special protection Model 220 with special protection, Model 220.08/18/074/174/179
BA42.10-P-1003-10G Guide pin to caliper support Nm - 25
TORQUE SPECIFICATION REAR AXLE BRAKE CALIPER

Number Designation Model 220 without special protection, except model 074/174 Model 220 with special protection, Model 220.074/174
BA42.10-P-1003-12G Guide pin to caliper support Nm 28 28
Fig 3: Identifying Pusher Tool (000 589 52 43 00)
G04849483