MHT 10120 L M
Series
15
3
C
C
4
4
-
-
CHECKING THE POLY-V RIBBED BELT TENSION
CHECKING THE POLY-V RIBBED BELT TENSION
Open the engine hood and remove crank case 1 C4/1.
Check for the presence of damage on ribbed belt 2 C4/2
moving one section at a time; to carry out this check:
- Make a mark with chalk on the ribbed belt;
- Make the engine run in bursts or move the ribbed belt by
means of a rotation device up to the chalk mark;
-
Replace ribbed belt 2 C4/2 if one of the following types
Replace ribbed belt 2 C4/2 if one of the following types
of damage mentioned are present (C4/3)
of damage mentioned are present (C4/3)
.
.
The damage
1 – New belt (comparison; ribbing)
2 – Wear on the sides: wedge-shaped ribbing
3 – Frame visible at the bottom of the ribbing
4 – Ribbing broken
5 – Transverse cracks in different ribs
6 – Rubber nodules at the bottom of the belt
7 – Dirt or rubble deposits
8 – Ribbing detached from the bottom of the belt
9 – Wires of the frame torn on the sides
10 – Outer wires of the frame frayed
11 – Transverse cracks on the back
12 – Transverse cracks in different ribs
For assembling and disassembling the ribbed belt, see point
D
D
7
7
.
.
FIG. C4/1
FIG. C4/2
FIG. C4/3
1
2
1
2
3
4 5
4
5
4 5
6
6 6
7
11
12
10
9
8
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