Charge Hydraulic System - Toro Groundsmaster 360 Service Manual

Charge Hydraulic System

NOTE: When initially starting the hydraulic system with
new or rebuilt components such as wheel motors, gear
pump or lift cylinder, it is important that the hydraulic sys-
tem be charged properly. Air must be purged from the
system and its components to reduce the chance of
damage.
IMPORTANT: Change hydraulic oil filter whenever
hydraulic components are repaired or replaced.
1. Park machine on a level surface with engine off.
2. Make sure all hydraulic connections, lines and com-
ponents are secured tightly.
3. If component failure was severe or the system is con-
taminated, flush and refill hydraulic system and tank
(see Flush Hydraulic System in this section).
4. Make sure hydraulic tank is full. Add correct oil if nec-
essary.
5. Check traction control components for proper adjust-
ment, binding or damaged parts.
6. Disconnect wire harness connector from engine fuel
stop solenoid to prevent the engine from starting.
7. Make sure traction pedal is in the neutral position.
Turn ignition key switch to START; engage starter for ten
(10) seconds to prime hydraulic pumps. Wait fifteen (15)
seconds to allow the starter motor to cool and then re-
peat cranking procedure again.
8. Connect wire harness connector to fuel stop sole-
noid.
WARNING
Before jacking up the machine, review and follow
Jacking Instructions in Chapter 1 - - Safety.
9. Raise the machine so all drive wheels are off the
ground. Place jackstands under the frame to support the
machine.
CAUTION
Make sure machine is safely supported so it will
not move and accidentally fall to prevent injuring
anyone under machine.
Hydraulic System
10.Make sure traction pedal is in the neutral position.
Start engine and run at low idle speed (1300 RPM). The
charge and gear pumps should pick up oil and fill the hy-
draulic system. If there is no indication of fill in thirty (30)
seconds, stop the engine and determine the cause.
11. After the hydraulic system starts to show signs of fill,
actuate lift control switch until the lift cylinder moves in
and out several times. If the lift cylinder does not move
after three (3) to five (5) seconds or if the pump emits ab-
normal sounds, shut the engine off immediately and de-
termine cause or problem. Inspect for the following:
A. Loose oil filter or suction lines.
B. Incorrect hose routing.
C. Blocked suction line.
D. Faulty implement relief valve.
E. Faulty gear pump.
12.After lift cylinder moves normally, proceed to step 13.
13.Turn the steering wheel in both directions so that the
steering cylinders move in and out several times.
14.Operate the traction pedal in the forward and reverse
directions. The drive wheels should rotate in the proper
direction. If the wheels rotate in the wrong direction, stop
engine, inspect wheel motor location and hydraulic lines
to wheel motors (see Transmission Installation in the
Service and Repairs section of this chapter).
15.Adjust traction pedal to the neutral position (see Op-
erator's Manual).
16.Lower machine to ground.
17.If the transmission or a wheel motor was replaced or
rebuilt, operate the traction circuit on level ground so all
drive wheels turn slowly for ten (10) minutes.
18.Operate machine by gradually increasing its work
load to full over a ten (10) minute period.
NOTE: Some aeration of hydraulic oil on this machine
is normal. This aeration (foaming) may be more notice-
able after initial filling of hydraulic tank.
19.Stop the machine. Check hydraulic oil level and ad-
just if necessary (do not overfill). Check hydraulic com-
ponents for leaks. Tighten any loose connections.
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