Echo Bear Cat CH6627H - Hydraulic Feed Maintenance; Change Hydraulic Fluid Filter; Change Oil

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 uid drives the feed roller. Check the uid
level daily and ll as needed. The uid and lter should
be changed and system cleaned if the uid becomes
contaminated with foreign matter (water, dirt, grease, etc.)
or if the uid has been subjected to temperatures greater
than the maximum recommended.
The hydraulic pump requires premium hydraulic uids
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
uids meeting Allison C-3 or Caterpillar TO-2, and certain
specialty agricultural tractor uids.
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, ttings, 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
uid. Rell the reservoir as necessary.
5. Run the feed roller in both directions for several
minutes until any remaining air purges from the unit.
Rell the reservoir as necessary.
6. Shut down the engine, check for and correct any
uid leaks, and check the reservoir level. Add uid
if necessary. The hydraulic pump is now ready for
operation.
Handle pressurized hydraulic uid carefully. Escaping
pressurized hydraulic uid may penetrate your skin
causing serious injury. This uid 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 lter after the rst 50 hours of
operation and every 200 hours thereafter.
To change the hydraulic oil lter:
1. Using an oil lter wrench, turn the lter
counterclockwise.
2. Once the lter becomes loose, turn it out the rest of
the way with your hand.
3. Properly discard old lter.
4. Lube the rubber seal on the new lter with clean
hydraulic oil.
5. Install the lter onto the threaded pipe. Turn with your
hand until the lter is nger tight.
6. Using an oil lter wrench, tighten the lter another 1/2
turn.
7. Check hydraulic oil level and ll if necessary.
5.15 CHANGE OIL
Check the oil level before each use. Change oil as directed
in the engine owner's manual.
Figure 5.9, Hydraulic Filter Removal