7.19 Fan Drive
7.19.1 Fan drive – Drive-belt check and adjustment
Preconditions
☑
Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Belt tension tester
5505890119/00
1
Torque wrench, 20-100 Nm
F30026582
1
Ratchet
F30027340
1
Engine oil
Preparatory steps
1.
Remove screws from protective cover.
2.
Remove protective cover.
Drive belt – Condition check
1.
Check condition of drive belt visually.
2.
Replace drive belt (→ Page 131):
• If belt is oily;
• If belt shows signs of overheating;
• If belt is cracked;
• If belt is worn;
• If cracks are found: .
Drive belt – Tension check, var-
iant A
1.
Place belt-tension tester onto drive midway
between the belt pulleys (arrow).
2.
Press button uniformly against drive belt
surface until spring disengagement can be
heard and felt.
3.
Do not press any further, otherwise the dis-
play value will be falsified.
4.
Take off belt-tension tester without chang-
ing the position of the indication arm.
5.
Read off measured value at the intersec-
tion of indication arm and "KG" scale.
6.
If the measured value deviates from the specified setting, readjust belt tension.
Setting (new drive belt)
660 N
Setting (used drive belt)
510 N
128 | Task Description | MS15018/02E 2013-09
TIM-ID: 0000000045 - 003
