AR25.20-W-0070D | Bleed clutch operating system | 29.6.10 |
MODEL 375.1, 958.0, 970, 972, 974, 975, 976 except CODE (IY2) Hydraulic fluid as per sheet 345.0
with central clutch release bearing and clutch booster
MODEL 374.5, 375.3, 950.5 /6, 952.5 /6, 953.6, 954.5, 958.2 except CODE (IY2) Hydraulic fluid as per sheet 345.0
with central clutch release bearing and clutch booster
W25.20-1066-09
Illustrated on model 950.5
1 Connecting cable
2 Expansion reservoir
3 Bleed valve
6 Clutch servo assistance
7 Bleed valve
4 Venting hose
5 Bleed valve
Modification notes
Bleeding | |||
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. | |
| Brake fluid notes | ||
1 | Open front flap | ||
2 | Connect connection line (1) of bleeder unit to expansion reservoir (2) | Electric brake fluid change/bleeder unit | |
3 | Adjust bleed pressure on bleeder unit to 2 bar | ||
4 | Switch on bleeder unit | Pay attention to manufacturer's operating instructions. | |
5 | Attach bleed hose (4) to bleeder valve (7) of clutch booster (6) | ||
6 | Open bleeder valve (7) | Open the bleeder valve (7) at least by 90°. Carry out bleeding process until the brake fluid escapes at the bleed hose (4) free of bubbles, in the process operate the clutch pedal several times. | |
7 | Close bleed valve (7), remove bleed hose (4) and attach to bleed valve (5) of clutch booster (6) | | |
8 | Open bleeder valve (5) | Open the bleeder valve (5) at least by 90°. Carry out bleeding process until the brake fluid escapes at the bleed hose (4) free of bubbles, in the process operate the clutch pedal several times. | |
9 | Close bleeder valve (5) and detach bleed hose (4) | | |
10 | Check bleed valves (5, 7) for leaks | ||
11 | Attach bleed hose (4) to bleed valve (3) of central clutch release bearing | ||
12 | Open bleeder valve (3) | Open the bleed valve (3) by at least 90°. Carry out bleeding process until the brake fluid escapes at the bleed hose (4) free of bubbles, in the process operate the clutch pedal several times. | |
13 | Close bleed valve (3) and detach bleed hose (4) | | |
14 | Check tightness of breather valve (3) | ||
15 | Switch off bleeder unit and detach connection line (1) from expansion reservoir (2) | The bleeder unit must be unpressurized, lower the pressure in the bleeder unit if necessary. | |
16 | Correct the brake fluid level in expansion reservoir (2) | ||
17 | Perform a function test | If the function of the clutch operating system is inadequate, repeat the bleeding operation. | |
18 | Close front flap |
Clutch operating mechanism
Number | Designation | Model | Model | ||
BA25.20-N-1008-01N | Central clutch release bearing bleed valve | M8 | Nm | 8 | 8 |
M10 | Nm | 17 | 17 | ||
BA25.20-N-1010-01N | Clutch booster bleed valve | Nm | 8 | 8 | |