Parking brake system - mechanical, acts on the rear brakes
Brake performance - disc brakes on all wheels
Brake pad adjustment - automatic
Effective total brake lining area - 306 cm²
Two-cavity master brake cylinder - cavity diameters:
- contour from the pusher side (front wheel brake) — 23.81 mm
- floating contour (rear wheel brake) — 19.05 mm
Piston diameter in calipers:
- front - 60.0 mm
- rear - 38.0 mm
Brake systems:
- manufacturer - ATE
- designation - T 51/1802
Brake calipers
Product designation:
- front-ATE SS 2/60 or BX FE-60
- rear - ATE 38M or BXF - 38
Cylinder diameter, new:
- front - 59.99 - 60.04 mm
- rear - 37.99 - 38.03 mm
Width of opening for brake pads:
- front - 90.00 - 90.15 mm
- rear - 60.02 - 62.03 mm
Brake pad width, maximum:
- front - 87.75 mm
- rear - 61.75 mm
Brake pads for service brakes
Total thickness of the pad:
- front - 15.0 mm
- rear - 15.0 mm
Thickness of the base of the block:
- front - 5.0 mm
- rear - 5.0 mm
Permissible wear of linings up to thickness:
- front - 2.0 mm
- back - 2.0 mm
Parking brake pads
Brake disc thickness:
- front - 22.0 mm
- rear - 10.0 mm
Permissible thickness after repair:
- front - 21.0 mm
- rear - 9.4 mm
Metal removal is allowed on each side of the brake disc when processing the front disc - 0.5 mm, the rear - 0.3 mm
Maximum permissible disc thickness:
- front - 20.70 mm
- rear - 9.02 mm
Thickness tolerance of brake surfaces max. 0.01 mm
Brake disc diameter:
- front —..278±0.2 mm
- rear - 279±0.2 mm
Mounting hole diameter:
- front - 80.07 - 80.00 mm
- rear — 67.00 - 67.05 mm
Parking brake inner diameter - 160 + 0.2 mm
Disc brake installation tolerances:
- permissible end runout of the front brake disc mounted on the hub - max 0.12 mm
- permissible lateral runout of the rear brake disc mounted on the hub - max. 0.15 mm
- permissible tilt of the caliper relative to the brake disc - max. 0.12 mm
Permissible deviation from the average position of the caliper relative to the brake disc - max. 0.12 mm
Article borrowed from the web portal: www.mercedesman.ru
Parking brake mechanism with self-amplification in any direction of rotation
Brake pad diameter - 160 - 0.2 mm
Brake pad width - 25.0 mm
Inner diameter of the brake disc - 160 + 0.2 mm
Adjusting the parking brake:
- overall gear ratio of the mechanism is 1:35.6
- number of teeth on the ratchet mechanism sector - 12
- number of teeth when moving the parking brake pedal to create a force of 40 kg - 3 - 4
- number of teeth on the sector before the parking brake starts to operate - 1 - 2
Brake pad designation
Front brake - Part number - 001 586 7542 Textar T 262
- without brake lining wear indicator - 001 586 1842; Textar T 269; 001 586 3242; Jurid 226
- with brake lining wear indicator - 001 586 3342; Textar T 269; 001 586 3642; Jurid 226
Rear Brake - Part Number 000 586 7642; Jurid 223
Parking brake - part number 108 420 0120; Energit 338
Brake force booster
- Piston diameter - 228.6 mm (9 inches)
- Stroke - 35.0 mm
- Gain - ~4.5
- The amplifier characteristic at vacuum is 0.75 - 0.80 bar.
Brake pedal force
hydraulic system pressure:
- 5 kgf - 15 - 20 bar
- 10 kgf — 44 - 47 bar
- 15 kgf — 70 - 73 bar
- 20 kgf — 95 - 98 bar
- 25 kgf - 118-121 bar
- 30 kgf - 140-145 bar