Genuine 1991 Mercedes-Benz 190E Brake Pad Set

1991 Mercedes-Benz 190E Brake Pad Set Parts Q&A

• Q: How to replace a Brake Pad Set and ensure proper installation in a caliper on 1991 Mercedes-Benz 190E?

  A: Where applicable, pull the pad wear sensor wiring connectors out from the caliper body, noting the correct routing of the wiring. Using a hammer and suitable punch, carefully tap out the pad retaining pins and recover the anti-rattle spring. Slide the pads out from the caliper body, noting the correct fitted position of the wear sensors, and recover the shims fitted between the pads and pistons if necessary. Inspect the brake pads and renew the anti-rattle spring, pad retaining pins, and shims if the pads are to be renewed. Prior to fitting the pads, brush the dust and dirt from the caliper and pistons, avoiding inhalation, and inspect the dust seals around each piston for damage, as well as the pistons for fluid leaks, corrosion, or damage; any deterioration found necessitates caliper overhaul. If new brake pads are to be fitted, push the caliper pistons back into the cylinder using a suitable piece of wood as a lever, ensuring the master cylinder reservoir is not overfilled with hydraulic fluid, and siphon off any surplus if the fluid level rises above the "MAX" line. For brake pad backing plates equipped with damper pads, do not apply lubricant; for plain backing plates, apply a smear of brake grease to the edges, avoiding excess or contact with friction material. Ensure the wear sensors are securely clipped into the backing plate of each pad and fit the shims where applicable. Slide the brake pads and shims into position in the caliper, ensuring the friction material is against the brake disc. Fit the new anti-rattle spring to the top of the pads correctly, slide in the pad retaining pins over the anti-rattle spring, and tap them fully into the caliper body. Ensure the wiring is correctly routed and connect the wear sensor connectors to the caliper body. Depress the brake pedal repeatedly until the pads are pressed into firm contact with the brake disc, restoring normal pedal pressure. Repeat the procedure on the remaining front brake caliper, then refit the roadwheels, lower the vehicle to the ground, and tighten the roadwheel bolts to the specified torque setting. Check the hydraulic fluid level and test the operation of the braking system exhaustively before bringing the vehicle back into service on the public highway.