69
– Insert a large screwdriver between the hydrau-
lic belt tensioner and the belt pulley and press
it down until the pulley slides on to the center-
ing hub.
– Insert and tighten the remaining machine
screws „1“.
1
L3/70
Types of belt
Since the belt pulleys on the
fan side
differ in
diameter on various engine types and versions,
Poly-V belts of differing lengths are fitted.
Note:
In order to be sure of avoiding mistakes con-
cerning the length of Poly-V belts when ordering
them, it is best to measure the diameter of the
belt pulley at the fan end and refer to the above
table, using this figure as a starting point.
Type
and engine
version
Ident. No.
Belt
length
(mm)
Fan pulley
diameter
(mm)
2 L 41 C
502 031 00
920
72
All other types
and versions 501 415 00
910
64
40
