11.4 Routine maintenance wheel gear for
track vehicles:
The operator is responsible for routine maintenance
and must carry out the following activities.
- After a brief operating period of about 100 hours
(breaking-in), change the oil in the gear unit.
- Check that there are no metallic parts with unusual
dimensions in the magnetic plug of the gear unit.
- Change the oil in the gear unit while it is hot so that
it is easier to drain.
- Wash the interior of the gear unit with a suitable
liquid that is recommended by the lubricant manu-
facturer.
- Subsequent oil changes will be made every 2000-
2500 hours of operation or, in any case, each year.
- Do not mix different types of oil.
- Periodically check the levels (about once a month)
and top up if necessary.
- The lubrication oil for the multi-disc brakes is the
same one that lubricates all gears in the gear unit,
therefore the brake fluid is automatically replaced
when the gear unit oil is replaced.
ATTENTION: when checking the oil levels in wheel
gear units equipped with a multi-disk brake and
hydraulic motor, if the levels have risen, this means
that oil is penetrating either from the brake seals
or from the motor rotary seal. Contact the "Brevini
Service Department".
- For each unit it is recommended to keep a chart
that will be duly filled out and updated each time
maintenance is performed.
11.5 Oil Change
NOTE: In one series of Wheel Gear Units there are
2 oil plugs located at 7.5º and in other series there
are 2 oil plugs located at 18.0º.
11.5.1
O i l
c h a n g e
with 2 oil
plugs at
75°
- Turn the gear
u n i t u n t i l t h e
d r a i n p l u g i n
pos. "A" is at
the lowest point
as shown in fi-
Fig. n. 1
B
A
www.comoso.com
37.
gure no. 1.
- Unscrew the drain plug in pos. "A" and the one in
pos. "B" to make it
easier for the oil to drain from the gear unit. Once
the oil has been drained, replace the drain plug in
pos. "A".
- Wash the interior of the gear unit with a suitable
cleaning liquid that is recommended by the lubricant
manufacturer. Do the following:
Put liquid into the gear unit and then replace the filler
plug; run the gear unit
for a few minutes at a high speed, then drain the
cleaning liquid from the gear unit.
- See paragraph 7 Lubrication for filling instructions.
11.5.2
Oil change with 2 oil plugs at 180°
- Turn the gear
unit until the drain
plug in pos. "A"
is at the lowest
point as shown in
figure no. 1.
- Unscrew the
drain plug in pos.
"A" and the one
in pos. "B" to
make it easier for
the oil to drain
from t he gear
unit. Once the oil
has been drained, replace the drain plug in pos. "A".
- Wash the interior of the gear unit with a suitable
cleaning liquid that is recommended by the lubricant
manufacturer. Do the following:
Put liquid into the gear unit and then replace the
filler plug; run the gear unit for a few minutes at a
high speed, then drain the cleaning liquid from the
gear unit.
- See paragraph 7 Lubrication for filling instructions.
12. BRAKE MAINTENANCE ON
WHEEL GEAR FOR TYRED
VEHICLES
Adjustment prescription
The brakes must be adjusted after:
- Overhaul, assembly and disassembly of the
adjustment device
- Repairs to the brake in which the basic adjustment
is modified
Fig. n. 2
B
A