M
AINTENANCE
Figure 15: Check chain
Dimension A max.
787,9mm
11 x t inside max.
743,0mm
Dimension B max.
69,5mm
Dimension C min.
21,2mm
Dimension D max.
116,4mm
8.15. Check chain sprocket
NOTICE
If the wear dimensions of a chain sprocket are
outside of the limit dimensions indicated below,
then the chain sprocket is to be replaced.
Figure 16: Four-tooth chain sprocket
z
a
min
x
max
4
60,0 mm
0,45 mm
5
59,6 mm
0,45 mm
z:
Number of teeth of the chain sprocket
a,x:
Limit dimensions after maximum permitted
wear
8.16. Check the chain guide and hook
mount
Check the chain guides for wear and when the
wear dimension of 2,3mm is reached with regard
to chain guide diameters or hook mounts in the
centre section of the device: Replace the housing.
The wear dimension must be measured at the
points on the guide surfaces which have been
worn down by the chain.
Page
54
of 64
Doc.-No.: VA049318-10-OM-EN-0319-64-2
