24
6 INCH CHIPPER
SERVICE & MAINTENANCE
WARNING
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE, DISENGAGE THE
HYDRAULICS, OPEN SHIELD AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
5.13 HYDRAULIC FEED MAINTENANCE
Hydraulic fluid drives the feed roller. Check the fluid
level daily and fill as needed. The fluid and filter should
be changed and system cleaned if the fluid becomes
contaminated with foreign matter (water, dirt, grease, etc.)
or if the fluid has been subjected to temperatures greater
than the maximum recommended.
The hydraulic pump requires premium hydraulic fluids
containing high quality rust, oxidation, and foam inhibitors.
These include premium turbine oils, API CD engine oils
per SAE J183, M2C33F or G automatic transmission
fluids meeting Allison C-3 or Caterpillar TO-2, and certain
specialty agricultural tractor fluids.
In the unlikely event that the oil is completely drained
from the hydraulic system, oil must be added and any air
bubbles must be purged from the system. To do this:
1.
Clean all system components (reservoir, fittings, etc.).
2. Fill the hydraulic reservoir.
3. Start the engine and run at the lowest possible RPM.
4. As you purge air from the unit, the oil level in the
reservoir will drop and bubbles may appear in the
fluid. Refill the reservoir as necessary.
5. Run the feed roller in both directions for several
minutes until any remaining air purges from the unit.
Refill the reservoir as necessary.
6. Shut down the engine, check for and correct any
fluid leaks, and check the reservoir level. Add fluid
if necessary. The hydraulic pump is now ready for
operation.
Handle pressurized hydraulic fluid carefully. Escaping
pressurized hydraulic fluid may penetrate your skin
causing serious injury. This fluid may also be hot
enough to burn. Serious infection or reactions can
develop if immediate proper medical treatment is not
administered.
WARNING
Hydraulic pressure controlled by the relief valve is
factory set at 2500 PSI.
NOTE
5.14 CHANGE HYDRAULIC FLUID
FILTER
Change the hydraulic oil filter after the first 50 hours of
operation and every 200 hours thereafter.
To change the hydraulic oil filter:
1.
Using an oil filter wrench, turn the filter counterclockwise.
2.
Once the filter becomes loose, turn it out the rest of
the way with your hand.
3.
Properly discard old filter.
4.
Lube the rubber seal on the new filter with clean
hydraulic oil.
5.
Install the filter onto the threaded pipe. Turn with your
hand until the filter is finger tight.
6.
Using an oil filter wrench, tighten the filter another 1/2
turn.
7.
Check hydraulic oil level and fill if necessary.
5.15 CHANGE OIL
Check the oil level before each use. Change oil as directed
in the engine owner's manual.
Figure 5.8, Hydraulic Filter Removal
