Charging The Hydraulic System - Toro Field Pro 6040 Service Manual

Charging the Hydraulic System

Field Pro® 6040
22267SL Rev A
Air must be purged from the hydraulic system to reduce the chance
of component damage.
When initially starting the hydraulic system with new or rebuilt components such
as wheel motors, pumps, or cylinders, it is important that the hydraulic system
is charged properly to remove air from the system.
Flush the hydraulic system whenever there is a severe component
failure or the system is contaminated; refer to
System (page 5–49).
1. Park the machine on a level surface and set the key switch to the O
position.
2. Raise the machine so the rear wheels are off the ground and free to rotate;
refer to Jacking Instructions (page
3. Ensure that all of the hydraulic connections are secured tightly.
4. Ensure that the hydraulic reservoir is full. Add the correct quantity and type
of hydraulic fluid if necessary; refer to the traction unit Operator's Manual.
5. If the piston (traction) or gear pump was replaced or repaired, prime the
hydraulic pumps; refer to
6. Make sure the traction control is in neutral, then start the engine and let it
idle at low speed. 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, set the key switch to the O
Check hydraulic reservoir fluid level frequently while charging the
system and add fluid if necessary.
7. After the hydraulic system starts to show the signs of fill, use the control valve
to extend and retract the attachment cylinders several times.
8. If a cylinder does not move after 15 seconds or the gear pump emits
abnormal sounds:
A. Immediately set the key switch to the O
B. Check for incorrect hose routing.
C. Ensure that the suction line is not blocked.
D. Make sure the relief valve (RV1) in the control valve is not damaged
or blocked open.
E. Test gear pump for damage.
9. Operate the traction control levers in the forward and reverse directions.
Make sure the wheels are turning in the proper direction. If the piston
(traction) pump or a wheel motor was replaced or rebuilt, operate the traction
circuit slowly for 5 minutes.
10. Set the key switch to the O
IMPORTANT
IMPORTANT
1–6).
Priming the Hydraulic System (page
position and determine the cause.
FF
IMPORTANT
position.
FF
Page 5–55
Flushing the Hydraulic
5–54).
position.
FF
Hydraulic System: Service and Repairs
FF