INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 32 of 68
7503-M002-6_B
NAV26HW - NAV26HW.S - NAV26HW.ST
• Check periodically the oil level of the oil-pressure unit
and, in case, carry out the filling up with hydraulic
oil having a viscosity degree suitable for the average
temperatures of the country where the machine is
installed and in particular:
- viscosity 32 (for countries with room temperature
from 0 to 30 degrees);
- viscosity 46 (for countries with room temperature
above 30 degrees).
At least once a year it is advisable to proceed anyway
to the complete replacement of the hydraulic oil of
the hydraulic unit itself.
CARRY OUT THIS CONTROL WIT
THE MACHINE COMPLETELY
CLOSED (WITH HYDRAULIC PIS-
TONS IN).
• Periodically (about every 100 hours), check the oil
level of the reduction gear and eventually reset the
level.
• Check operation of the safety devices every week.
ONLY FOR NAV26HW.S
A.
Check the reduction gear oil level (
Fig. 44 pos. 1
);
the level indicator window (
Fig. 44 pos. 2
) must be
covered with lubricant, otherwise, remove the plug
provided and top up using appropriate lubricants
until the level is reset.
Fig. 44
B.
Check the belt tensioning (
Fig. 45-46 pos. 1
):
• Remove protection guard (
Fig. 45-46 pos. 2
) with
a screwdriver.
• Stretch the belt (
Fig. 45-46 pos. 1
) using the screw
(
Fig. 45-46 pos. 3
) after the nuts (
Fig. 45-46 pos.
4
) have been slackened.
• Tighten the fixing nuts (
Fig. 45-46 pos. 4
) after the
adjustment operations, then assemble the protection
guard (
Fig. 45-46 pos. 2
).
ONLY FOR NAV26HW.S
Fig. 45
ONLY FOR NAV26HW - NAV26HW.ST
Fig. 46
