Flush Hydraulic System
IMPORTANT: Flush the hydraulic system any time there is a severe component failure or the system is contaminated (oil appears milky, black or contains metal particles).
1.Park machine on a level surface. Lower cutting deck to the ground, stop engine and engage parking brake. Remove key from the ignition switch.
CAUTION
Operate all hydraulic controls to relieve system pressure and avoid injury from pressurized hy- draulic oil.
IMPORTANT: Make sure to clean around any hy- draulic connections that will be disconnected for draining.
2.Drain hydraulic reservoir.
3.Drain hydraulic system. Drain all hoses, tubes and components while the system is warm.
4.Change and replace both hydraulic oil filters.
5.Inspect and clean hydraulic reservoir (see Hydraulic Reservoir Inspection in this section).
6.Connect all hydraulic hoses, tubes and components that were disconnected while draining system.
NOTE: Use only hydraulic fluids specified in the Opera- tor’s Manual. Other fluids may cause system damage.
7.Fill hydraulic reservoir with new hydraulic fluid.
8.Disconnect wire harness connector from engine run solenoid.
9.Turn ignition key switch and engage starter for ten
(10)seconds to prime hydraulic pumps. Repeat this step again.
10.Connect wire harness connector to engine run sole- noid.
11.Start engine and let it run at low idle (1450 RPM) for a minimum of 2 minutes. Increase engine speed to high idle (2870 RPM) for a minimum of 1 minute under no load.
12.Raise and lower cutting deck several times. Turn steering wheel fully left and right several times.
13.Shut off engine and check for hydraulic oil leaks. Check oil level in hydraulic reservoir and add correct amount of oil if necessary.
14.Operate machine for 2 hours under normal operating conditions.
15.Check condition of hydraulic oil. If the new fluid shows any signs of contamination, repeat steps 1 through 14 again until oil is clean.
16.Assume normal operation and follow recommended maintenance intervals.
Hydraulic System | Page 4 | Groundsmaster |
