AR25.20-W-0070FA | Bleed clutch operating system | 4.12.07 |
MODEL 930, 932, 933, 934
with CODE (IY2) Hydraulic fluid as per sheet 345.0
except CODE (GE2) Electronic drive control II
except CODE (GE3) Mercedes PowerShift
except CODE (GE7) Mercedes PowerShift 2
MODEL 374.6, 942, 943, 958.4 with CODE (IY2) Hydraulic fluid as per sheet 345.0
MODEL 375.4, 940, 944
with CODE (IY2) Hydraulic fluid as per sheet 345.0
except CODE (GE3) Mercedes PowerShift
W25.20-1098-11
Illustrated on model 934
1 Expansion reservoir
I Filling hose (Y-shaped hose)
K Y-shaped adapter
L Connection piece
W25.20-1091-11
20 Sightglass
21 Venting hose
H Receptacle
I Filling hose (Y-shaped hose)
K Y-shaped adapter
W25.20-1095-06
Shown on transmission which has been removed
2 Vent valve
F Return hose
H Receptacle
Modification notes
Bleeding | |||
| Notes on hydraulic fluid as per Specification, Sheet 345.0 | ||
1 | Open maintenance flap | ||
2 | Attach connector (L) to expansion reservoir (1) | To do so, remove filter in expansion reservoir (1). | |
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3 | Connect filling hose (I), Y-shaped adapter (K) and receptacle (H) to bleed hose (21) of filling and bleeding unit | Only filling and bleeding units that are approved in GOTIS and are already marked with one of the following adhesive labels may be used: | |
"HY2" for Romess Rogg GmbH & Co. KG "BOY II MO" for Bodo Stier Hydrotechnik GmbH "NEU HY 2" for GL GmbH | |||
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4 | Switch on filling and bleeding unit | Flush the filling and bleeding unit until hydraulic fluid free of bubbles flows through the inspection glass (20) of the filling hose (I). | |
5 | Switch off filling and bleeding unit | ||
6 | Detach Y-shaped adapter (K) from receptacle (H) and connect to connector (L) | | |
7 | Connect return hose (F) to bleed valve (2) of clutch booster and receptacle (H) | The hydraulic fluid must be collected in the receptacle (H) because during the bleeding process it combines with air and may then no longer be poured into the filling and bleeding unit. | |
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8 | Switch on filling and bleeding unit | ||
9 | Adjust bleeding pressure on filling and bleeding unit to 1 bar | Pay attention to manufacturer's operating instructions. | |
10 | Open bleed valve (2) | Open the bleed valve (2) by at least 90°. Perform bleed process until the hydraulic fluid flows through the return hose (F) free of bubbles. Repeatedly operate the clutch pedal at the same time. | |
11 | Close bleed valve (2) and detach return hose (F) | | |
12 | Check bleed valve (2) for leaks | ||
13 | Switch off filling and bleeding unit and detach connector (L) from expansion reservoir (1) | The filling and bleeding unit must be unpressurized, lower the pressure if necessary. | |
14 | Correct the hydraulic fluid level in expansion reservoir (1) | ||
15 | Perform a function test | If the function of the clutch operating system is inadequate, repeat the bleeding operation. | |
16 | Close maintenance flap | ||
17 | Perform minor teach-in process | Only on vehicles with code (GS2) Gear control or with code (GS7) Gear control II. | |
With code (GS2) Gear control | |||
With code (GS7) Gear control II |
Clutch operating mechanism
Number | Designation | Engine | Engine | |
BA25.20-N-1013-01B | Clutch booster bleed valve | Nm | 8 | 8 |
Adapter set
000 589 02 91 00