Checking The Hydraulic Lines And Hoses; Adjusting The Counterbalance Pressure - Toro Groundsmaster 4010-D Operator's Manual

Figure 74
1. Hydraulic filter
6. Once the reservoir is filled, start the engine and let it
run at low idle for approximately two minutes. Activate
steering and raise/lower cutting units several times to
purge air from the system. 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.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Make sure all hydraulic fluid hoses and lines are
in good condition and 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
the pressure in the counterbalance circuit. Recommended
counterbalance pressure is 2241 kPa (325 psi). To adjust
the counterbalance pressure, loosen the locknut, rotate the
adjusting screw (Figure
or counterclockwise to decrease the pressure and tighten the
locknut. The engine must be running, the deck lowered and
in float to check pressure.
Note: The castor wheels of all three cutting units should
remain on the ground when adjusting the counterbalance and
g020461 with counterbalance applied.
1. Counterbalance adjusting
screw
52
(Figure 75) is used to test
75) clockwise to increase the pressure
Figure 75
2. Counterbalance test port
g020446