Hydraulic Valve Adjustments - Challenge CHAMPION 305 Instructions And Parts Manual

11.0 Hydraulic System
3. Using a hand drill and transfer pump commonly found at hardware and home improvement
stores, transfer the used oil to empty containers.
4. Remove the magnet stuck to the bottom of the tank. Clean off any debris that may be
attached to it.
5. With a clean rag, wipe out any visible debris remaining in the tank.
6. Place the magnet at the location from which it was removed.
7. Replace the oil filter. Place a thin film of new hydraulic oil on the seal of the new filter to
insure a proper seal. Firmly hand-tighten the filter onto the filter head.
8. Using the transfer pump, fill the tank with 13.5 gallons of the recommended fluid (See Section
11.1 - Recommended Hydraulic Oil) until the fluid level is approximately 2" (5cm) from the top
of the tank. DO NOT OVERFILL. Overfilling may cause leakage when the machine is hot.
9. Re-install the tank cover with gasket.
10. Before turning on the machine, make sure all hydraulic hose fittings are tight.
11. Turn on main power to the machine. Turn on the hydraulic motor by pressing both cut buttons
once. Inspect the hydraulic system for leaks. If leaks are found, turn off main power to the
machine and tighten any leaking fittings.

11.3 Hydraulic Valve Adjustments

checking and adjusting. Be very careful that tools and other people are clear of moving parts and that
the cutter is not accidentally operated while adjustments are being made. Disconnect the power and
lock it out, see Safety Precautions, page 6, whenever working on the machine unless the directions
specifically require the machine to be powered.
NOTE: Pressure settings fluctuate with oil temperature. Set pressures when the oil is hot.
36
Reservoir
Tank Cover
Figure 26
Several of the following tests require the machine to be operational for
Hydraulic
Tank