Echo 71854 - Manual (Page 15)

8 INCH PTO CHIPPERS 13
4.2 conTrol arm oPeraTion
1. engage the PTO. Bring the chipper up to operating
speed. See Section 3, "controls and Operation," for
starting, chipping and stopping instructions.
2. engage the hydraulic feed by moving the control arm
as shown in figure 4.2. in the forward direction, the
feed rate increases as the arm is moved.
3. feed the branch (up to eight or nine inches in diameter,
depending on model number).
4. If the chipper jams, reverse the feed by moving the
control arm in the reverse direction. remove the branch
and rotate it before inserting it into the chute again.
Figure 4.2, Control arm operation
4.1 HYdraulic Feed insTrucTions
4.1.1 Fluids
Premium hydraulic fluids containing high quality rust,
oxidation and foam inhibitors are required. 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.
4.1.2 HYdrosTaTic PumP sTarT uP Procedure
follow this start-up procedure when starting a new
installation or when restarting an installation in which the
hydrostatic pump has been removed from the system.
1. Before starting the hydrostatic pump, make sure all sys-
tem components (reservoir, fittings, etc.) are clean.
2. fill the reservoir with recommended hydraulic fluid,
which should be filtered before entering the reser-
voir.
3. The inlet line leading from the reservoir to the charge
pump must be filled before start-up. loosen the fitting
on this inlet line until oil bleeds out.
4. Start the engine and run at the lowest possible rPM.
5. as air is purged from the unit, the oil level in the res-
ervoir will drop and bubbles may appear in the fluid.
refill the reservoir as necessary.
6. run the unit in both directions for several minutes until
any remaining air is purged from the unit. refill the
reservoir as necessary.
do not start engine unless pump is in neutral or detent
position on the cable.
Warning
HYdraulic Feed
Section
cauTion
handle pressurized hydraulic fluid carefully. escaping
pressurized hydraulic fluid can have sufficient force to
penetrate your skin causing serious injury. This fluid
may also be hot enough to burn. Serious infection or
reactions can develop if proper medical treatment is
not administered immediately.
7. a motor fitting may have to be loosened and oil-bled
to remove air from the system (use same procedures
as steps 3-5).
8. disengage PTO, check for and correct any fluid leaks,
and check the reservoir level. add fluid if necessary.
The hydrostatic pump is now ready for operation.
Figure 4.1, Hydrostatic pump components
4