Checking The Hydraulic Lines And Hoses; Adjusting The Counterbalance Pressure - Toro 30605 Operator's Manual

8. Once the reservoir is filled, start the engine and let it
run at low idle for approximately 2 minutes.
9. Activate the steering and raise and lower the cutting
units several times to purge the air from the system.
10. Stop the engine and check for leaks.
Checking the Hydraulic Lines
and Hoses
Service Interval: Every 2 years
Inspect the hydraulic lines and hoses daily for leaks, kinked
lines, loose mounting supports, wear, loose fittings, weather
deterioration, and chemical deterioration. Make all necessary
repairs before operating the machine.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Make sure that all hydraulic-fluid hoses and
lines are in good condition and that all hydraulic
connections and fittings are tight before
applying pressure to the hydraulic system.
• Keep your body and hands away from pin-hole
leaks or nozzles that eject high-pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic leaks.
• Safely relieve all pressure in the hydraulic system
before performing any work on the hydraulic
system.
• Seek immediate medical attention if fluid is
injected into skin.
Adjusting the Counterbalance
Pressure
The counterbalance test port
pressure in the counterbalance circuit. The recommended
counterbalance pressure is 2241 kPa (325 psi). To adjust
the counterbalance pressure, loosen the locknut, rotate the
adjusting screw (Figure 70) clockwise to increase the pressure
or counterclockwise to decrease the pressure and tighten the
locknut. To check the pressure, you must run the engine and
have the deck lowered and in float.
Note: The castor wheels of all 3 cutting units should remain
on the ground when adjusting the counterbalance and with
counterbalance applied.
(Figure 70) is used to test the
1. Counterbalance adjusting
screw
50
Figure 70
2. Counterbalance test port