MAINTENANCE
BLEEDING HYDRAULIC SYSTEM
DANGER
Pressurized Cap Can Cause Serious Injury
If Improperly Opened.
Never open oil cap without releasing
pressure valve stem.
Keep face and upper body away from cap
while opening.
When any hydraulic part is replaced the system will
have to be bled.
1. Push valve stem in to release all pressure from
the tank.
2. Remove the air pressure cap.
3. With towing unit, pull the topdresser up to
8 MPH. Pull the top dresser until all "jerking"
motion has stopped.
4. Use a tape measure to check the level of oil in
the tank.
5. Check the conveyor and brush motors, both
must run smoothly with no jerking motion.
6. When all are operating smoothly, install the air
pressure cap. Check the air pressure cap for
leaks. See Check Hydraulic System under Before
Operating (pg. 8).
IMPORTANT: When working with hydraulics,
you must keep the work area as clean as
possible. Change oil and filter as
recommended. If you have a new piece of
equipment under warranty and a hydraulic item
goes out . . . . don’t try to fix it. Install a new
part and return the defective part to the factory.
It is easier to get warranty on a part that has not
been taken apart.
CHANGING OIL FILTER
The oil filter is a 10 micron cross filter. Change the
filter every 100 hours of operation. Always fill the
element with oil when installing a new filter.
OIL TANK
The oil tank is a 2 gallon capacity tank. The oil type
is 10W30 or 10W40 SF - CC (preferably 10W30).
Change oil every 500 hours or yearly, whichever
comes first. The drain plug is located on the
bottom of the tank.
IMPORTANT: When adding oil to the system
pour it through a funnel with a fine mesh screen
(200 mesh or better). Keep the funnel and
containers immaculately clean. This
procedure prevents accidental contamination
of the hydraulic system.
WHEEL MOTOR NUT TORQUE (Fig. 6)
ALWAYS torque the nut on the wheel motor to 230
- 250 ft. lbs when servicing. Place the tabs of the
nut on the outside as shown in Fig. 6. If the tabs
are installed on the inside, against the hub, the nut
cannot be torqued properly.
11
Tabs
Torque
230 - 250 ft. lbs.
Figure 6
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