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7.18.3 Battery-charging generator drive – Drive belt and belt tensioner replacement
Preconditions
☑ Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Torque wrench, 20-100 Nm
Ratchet adapter
WARNING
Heavy object.
Risk of crushing!
• Use appropriate lifting devices and appliances.
Replacing drive belt and belt
tensioner
1.
Undo screws (1), (2) and (3).
2.
Remove protective cover (8).
3.
Slacken screws (4) and (5) by half a turn.
4.
Place socket adapter or box wrench on
screw (6) and press belt tensioner in the di‐
rection indicated by the arrow as far as it
will go.
5.
Tighten screw (4).
6.
Remove drive belt (7).
7.
Screw on screw (5) and replace belt ten‐
sioner.
8.
Fit new drive belt (7).
Tensioning drive belt
1.
Slacken screw (4) by half a turn.
Result:
Belt tensioner moves against the drive belt and tensions it.
2.
Use torque wrench to tighten screw (4) to specified tightening torque.
Name
Screw
3.
Use torque wrench to tighten screw (5) to specified tightening torque.
Name
Screw
4.
Install protective cover (8).
5.
Readjust belt tension after 30 minutes and again after 8 hours engine runtime (→ Page 135).
136 | Task Description | MS150054/02E 2012-02
Size
Type
M10x1.5
Tightening torque
Size
Type
M10x1.5
Tightening torque
Part No.
F30026582
F30027340
Lubricant
Value/Standard
60 Nm +5 Nm
Lubricant
Value/Standard
42 Nm
Qty.
1
1
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