MTU 12V 2000 G23, Use And Maintenance Manual

Page: 198 / 214

6 – 58 Ventilator Drive
Belt-tension check on 18V engines:
1. Place belt-tension tester onto V-belt midway
between the belt pulleys (arrow).
2. Press button uniformly against V-belt surface
until spring disengagement can be heard and felt.
3. Take off belt-tension tester without changing the
position of the indication arm.
4. Read off measured value at the intersection of
indication arm and "KG" scale.
• Specified belt tension for new drive belt:
670 N –-50 N
• Specified belt tension for used drive belt:
570 N –-50 N
5. If the measured value deviates from the specified
belt tension, readjust belt tension.
Belt-tension adjustment on 12/16V engines:
1. Loosen securing screws (3).
2. Release locknut (2).
3. Screw in tensioning screw (1) to set specified
belt tension.
4. Tighten locknut.
5. Check V-belt tension.
6. Tighten securing screws with torque wrench.
• Tightening torque: 100 Nm
Belt-tension adjustment on 18V engines:
1. Loosen securing screws (1 and 4).
Note: On engines for 50 Hz generators, bolt
(3) must be in position (A). On all other
engines, it must be in position (B).
2. Screw in tensioning screw (2) to tension V-belt.
3. Check V-belt tension.
4. Tighten securing screws (1 and 4) with torque
wrench.
• Tightening torque: 69 Nm
5. Check V-belt tension.
M015560 / 00E 03-05 © MTU