| Brake booster gear ratio (i) |
|
Factor |
3, 5 |
|
|
| Front brake disc diameter - grey cast iron |
|
Diameter |
408 mm |
|
|
| Front brake disc diameter - PCCB |
|
Diameter |
410 mm (16.1 in) mm |
|
|
| Rear brake disc diameter - grey cast iron |
|
Diameter |
380 (15 in.) mm |
|
|
| Rear brake disc diameter - PCCB |
|
diameter |
390 mm |
|
|
| Piston diameter in front brake calliper - grey cast iron/PCCB |
|
Diameter |
30/30/30 mm |
|
|
| Piston diameter in rear brake calliper - grey cast iron/PCCB |
|
Diameter |
32/32 mm |
|
|
| Effective brake pad area per front wheel - grey cast iron |
|
Area |
190 cm2 |
|
|
| Effective brake pad area per front wheel - PCCB |
|
Area |
213 cm2 |
|
|
| Effective brake pad area per rear wheel - grey cast iron |
|
Area |
132 cm2 |
|
|
| Effective brake pad area per rear wheel - PCCB |
|
Area |
133 cm2 |
|
|
| Pad, front |
|
PCCB |
Thickness |
10.4 mm |
|
| Pad, front (wear limit) |
All |
Thickness |
2 mm |
|
|
| Pad, rear |
All |
Thickness |
11.3 mm |
|
|
| Pad, rear (wear limit) |
All |
Thickness |
2 mm |
|
|
| Brake disc, new (front) |
All |
Thickness |
36 mm |
|
|
| Brake disc, new, rear |
Grey cast iron |
Thickness |
30 mm |
|
|
| Brake disc, new (rear) |
PCCB |
Thickness |
32 mm |
|
|
| Brake disc, front (wear limit) |
Grey cast iron |
Thickness |
34 mm |
|
|
| Brake disc, rear (wear limit) |
Grey cast iron |
Thickness |
28 mm |
|
|
| Brake disc wear limit, front - PCCB |
Brake disc minimum thickness (wear limit) is stamped on the brake disc hub. Example: Min: Th. 33.7 mm |
Thickness |
(Read value on brake disc hub) X.XX mm |
|
|
| Brake disc wear limit, rear - PCCB |
Brake disc minimum thickness (wear limit) is stamped on the brake disc hub. Example: Min: Th.27.7 mm |
Thickness |
(Read value on brake disc hub) X.XX mm |
|
|
| Wear limit PCCB: Surface change on front and rear brake discs |
Wear limit: Connected surface fracture > 1 cm2
and/or surface roughness of brake disc > 80 micrometer. Replace PCCB brake discs on each axle. |
Surface change |
Values and procedure for: Checking front 465102 PCCB brake discs/checking rear 465402 PCCB brake discs |
|
|
| Thickness tolerance of brake discs (max.) |
All |
Value |
0.02 mm |
|
|
| Maximum brake disc runout |
All |
Value |
0.03 mm |
|
|
| Maximum wheel hub runout |
All |
Value |
0.03 mm |
|
|
| Maximum installed brake disc runout |
All |
Value |
0.06 mm |
|
|
| Push-rod play |
Measured at brake pedal plate |
Measured value |
approx. 1 mm |
|
|
| Diameter of parking-brake drum |
Parking brake (electrically actuated, drum brake acting on the rear axle) |
Diameter |
180 mm |
|
|
| Diameter of parking-brake drum (wear limit) |
All |
Diameter |
181 mm |
|
|
| Width of parking-brake shoe |
All |
Measured value |
25 mm |
|
|