Toro Reelmaster 2000-D, Руководство по обслуживанию

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Reelmaster 2000–D Hydraulic System Page 4 – 25
Procedure for Traction Pump Flow Test:
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes.
2. Park machine on a level surface with the cutting units
lowered and off. Make sure engine is off.
3. Read Precautions For Hydraulic Testing.
4. Make sure that traction pedal is adjusted to the neu-
tral position (see Traction Unit Operator’s Manual).
5. Make sure that pump drive belt is adjusted properly.
(see Traction Unit Operator’s Manual).
6. Block one front traction wheel off the floor to allow
flow through the traction circuit.
7. Chock remaining wheels to prevent movement of the
machine.
8. Attach a heavy chain to the rear of the machine frame
and something immovable in the shop.
9. Make sure parking brake is off.
CAUTION
Operate all hydraulic controls to relieve system
pressure and avoid injury from pressurized hy-
draulic oil.
10.Clean hose fitting and disconnect hose from the el-
bow connection on the top of the traction pump (Fig. 20).
IMPORTANT: Make sure oil flow indicator arrow on
the flow gauge is showing that the oil will flow from
the motor through the tester and into the hose.
11. Install flow tester with pressure gauges in series with
the motor and the disconnected hose. Make sure flow
control valve is fully open.
12.One person should sit on the seat and operate the
machine while another person reads the tester. Start en-
gine.
13.Adjust engine speed so pump speed is 2400 RPM
(engine speed approximately 2700 RPM). Verify pump
speed with a phototac.
CAUTION
Use extreme caution when taking gauge read-
ings. The front tire on the ground will be trying
to move the machine forward.
14.Slowly push traction pedal to fully forward position.
15.Close flow control valve until pressure gauge reads
1000 PSI . Observe flow gauge.
TESTER READING: flow approximately 13 GPM
16.Release traction pedal and turn off machine.
17.Disconnect tester from elbow connection and hose.
Reconnect hose to elbow connection.
NOTE: If pressure is good under no load, but drops be-
low specification when under traction load, the piston
pump and/or wheel motor(s) should be suspected of
wear. When a pump and/or motor is worn or damaged,
the charge pump is not able to keep up with internal leak-
age in the traction circuit (See Test #3).
18.If specifications are not met, the traction pump needs
to be repaired or replaced as necessary.
1. Traction pump 2. Hose to traction forward
Figure 20
2
1
FRONT
Hydraulic System