Brake caliper, rear wheels
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Brake caliper, rear wheels
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1.
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Raise the car and remove the wheel.
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3.
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Depress the brake pedal slightly, using a brake pedal clamp.
Remove fuse No. 1 for the brake lights.
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4.
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Undo the brake line connection from the brake caliper. Plug the lines and brake caliper.
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5.
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Remove the two brake caliper retaining bolts and lift away the brake caliper.
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1.
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Fit the brake caliper, apply Loctite 242 to its two retaining bolts and tighten them, using a torque wrench.
Tightening torque 80 Nm (59 lbf ft)
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2.
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Remove the plugs and connect the brake lines.
Tightening torque 16 Nm (12 lbf ft)
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3.
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Fit the brake pads, see
To fit
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4.
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Lower the car slightly, remove the brake pedal clamp and put the fuse back in its holder.
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6.
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Fit the rear wheel, see
Wheels
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Tightening torques
aluminium wheel 110 Nm (81 lbf ft)
steel wheel 50 Nm +2x90°, max. 110 Nm (37 lbf ft +2x90°, max. 81 lbf ft)
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Important
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The wheel must hang freely when the wheel bolts are being tightened.
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7.
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Lower the car to the floor and depress the brake pedal to force out the brake pistons.
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8.
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Check the brake fluid level and top up as necessary.
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2.
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Clean the hydraulic body.
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3.
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Remove the two dust caps.
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4.
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Press out the brake piston by blowing compressed air through the hose connection.. Use special tool 89 96 712 as a counterstay.
Warning
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Mind your fingers as the brake piston flies out.
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5.
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Remove the sealing rings from the cylinder.
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6.
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Check for damage due to wear.
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1.
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Lubricate the piston sealing ring with the grease supplied in the kit. Also pack the dust cap with grease.
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2.
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Fit the piston seals in the cylinder.
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3.
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Fit the pistons in the cylinders and press the dust caps into place.
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Important
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It is essential that the recess on the piston is facing down and at the correct angle.
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A measurement can be taken to ensure that they are in the right position. The distance between the lower inner edge and the gap should be 29 mm (see illustration).
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Alternatively, check with a brake piston template (part No. 89 95 342).
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4.
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Fit the brake caliper, see
To fit
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