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Maintenance and service
4.17 Hydraulic drive transmission
Figure 4.26
Check the chain and lubricate it every 500 ha or once every season. See "4.7 Lubrication points"
on page 74. To gain access to the chain, first undo the protective cover. Move the cover aside to-
wards the centre of the machine.
Press on the chain to check its deflection. The deflection should be approx. 10 mm. If the chain
deflects more than this, loosen the mounting screws of the hydraulic motor and pull the motor
slightly forward until the chain deflection is correct.
4.18 Replacing the oil filter in the hydraulic unit
Figure 4.27
! Cleanliness is imperative when servicing and performing maintenance on the hydraulic sys-
tem.
The oil filter should be replaced prior to each season and when the indicator (A) turns red when
the hydraulic system is operating.
Always relieve the system of its pressure prior to replacing the filter.
NOTE!
Use a 30 mm wide key, insert it at the bottom of the filter cover (B) to loosen the locking device
and remove the cover. Place the filter cover on a clean surface. Remove the old filter unit (C) by
carefully pulling it down.
Set the new filter unit by carefully pressing it up into place. Replace and secure the filter cover.
80
A
B
C
Figure 4.28
Ver.3 29.06.2007
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Troubleshooting
