MAC215990
281
Revision A
4.6.5
Adjusting Chain Tension
–
Main Gearbox
The gearbox drive chain tension is factory-set, but tension adjustments are required after the first 50 hours, then every
500 hours or annually (whichever comes first). With the exception of oil changes, the gearbox drive chain requires no other
regular maintenance.
DANGER
To prevent injury or death from the unexpected start-up of the machine, always stop the engine and remove the key
from the ignition before leaving the operator
’
s seat for any reason.
1028057
A
B
C
Figure 4.63: Main Gearbox Chain Tensioner Cover
1.
Remove four bolts (A), cover (B), and gasket (C) from the
main gearbox.
1028063
A
B
Figure 4.64: Main Gearbox Chain Tensioner
2.
Remove retainer plate (A).
3.
Tighten bolt (B) to 250 Ncm (22 lbf
∙
in).
4.
Loosen bolt (B) by 3 flats (1/2 turn).