Toro Greensmaster 3120 Service Manual page 126

Charging the Hydraulic System (continued)
Hydraulic System: Service and Repairs
Check hydraulic tank fluid level frequently while charging the system
and add fluid as necessary.
7. Make sure traction pedal is in neutral. Start the engine and let it idle at low
speed.
Note: The hydraulic pumps should pick up hydraulic fluid and fill the hydraulic
system. If there is no indication of the system filling within 30 seconds, stop
the engine and determine the cause.
8. After the hydraulic system starts to show signs of filling:
A. Operate the joystick until the lift cylinders move in and out the full distance
several times. If the cylinders do not move after 15 seconds or the pump
emits abnormal sounds:
B. Turn the engine OFF immediately
C. Make sure one of the hydraulic fluid filters or the suction line is not
loose
D. Check for incorrect hose routing
E. Ensure the suction line is not blocked
F. Make sure the charge relief valve (CV) is not blocked or damaged
(open)
G. Test gear pump (P2) for damage
H. If the traction pump or a wheel motor was replaced or rebuilt:
I. Operate the traction pedal in the forward and reverse directions.
Make sure the wheels are turning in the proper direction and allow
the wheels turn slowly for ten (10) minutes.
J. Adjust the traction for N
Manual.
K. If the gear pump was replaced or rebuilt, run the cutting units at the
minimum speed setting (under no load) for ten (10) minutes.
L. If a reel motor was replaced or rebuilt, run the cutting units at the minimum
speed setting (under no load) for ten (10) minutes in both directions.
9. Lower the machine to the ground.
10. Operate the traction unit and cutting units by gradually increasing their work
load to full over a ten (10) minute period.
11. Stop the machine, check the hydraulic components for leaks and tighten
any loose connections.
12. . Check the fluid level in the hydraulic tank if necessary.
13. Check the level and condition of the hydraulic fluid and adjust if necessary;
refer to the traction unit Operator's Manual.
Note: If new fluid shows any signs of contamination, flush hydraulic system
again until the fluid is clean; refer to
4–74).
IMPORTANT
; refer to the traction unit Operator's
EUTRAL
Flushing the Hydraulic System (page
Page 4–80 Greensmaster 3120
17230SL Rev C