Procedure for Wheel Motor Efficiency Test:
Make sure hydraulic oil is at normal operating tem•
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic reservoir is full.
IMPORTANT: Make sure oil flow indicator arrow on
the flow gauge is showing that the oil will flow from
the wheel motor, through the tester and into the
traction pump fitting.
1.
9.
Install hydraulic tester with flow meter and pressure
2.
tral position (see Operator’s Manual).
Make sure that traction lever is adjusted to the neu•
gauges between the disconnected hose and traction
pump. Make sure flow control valve on the tester is fully
open.
3.
Park machine on a level surface with the coring head
fully raised. Make sure engine is off and the parking
brake is engaged. Secure coring head with service
latch.
10.Start
50
engine and move throttle to full speed (3400 +
RPM).
4.
tion.
Read Precautions For Hydraulic Testing in this sec•
CAUTION
Use extreme caution when performing test. The
tire(s) on the ground will be trying to move the
machine forward.
CAUTION
Operate all hydraulic controls to relieve system
pressure and avoid injury from pressurized hy•
draulic oil.
11.
1000
that wheel motor being tested does not rotate.
Slowly push traction lever in forward direction until
PSI is displayed on the pressure gauge. Make sure
5.
chine frame and an immovable object to prevent the ma•
chine from moving during testing.
Attach a heavy chain between the rear of the ma•
12.Wheel motor internal leakage will be shown on flow
meter in GPM. Flow should be less than 1.5 GPM for
the tested wheel motor.
6.
If front wheel motor requires testing:
13.Release traction lever and turn off engine. Record re•
sults of hydraulic flow test.
A. Both rear wheel motors should have hydraulic
lines connected. Block up both rear wheels off the
ground. Release parking brake so rear wheels can
turn.
14.If specifications are not met, the tested wheel motor
needs to be repaired or replaced as necessary.
15.Reconnect
hydraulic lines to wheel motor.
B. Position front wheel on the ground. Immobilize
front wheel to prevent it from turning.
16.If
steps 6 to 14 for the remaining wheel motor(s).
additional wheel motor(s) require testing, complete
7.
If a rear wheel motor requires testing:
17.Disconnect
tester from machine. Reconnect hose to
A. Disconnect both hydraulic lines from rear wheel
motor that is not being tested. Cap disconnected hy•
draulic lines and plug wheel motor ports to prevent
contamination.
pump connection.
1
B. Front wheel motor should have hydraulic lines
connected. Block up front wheel off the ground.
C. Make sure parking brake is engaged to prevent
rear wheel rotation.
8.
90
Clean hose fitting and disconnect hose from upper
o fitting on traction pump (Fig. 25).
2
Figure 25
1.
Upper 90o fitting
2.
Lower 45o fitting
ProCore 648
Page 4 – 29
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 648 |
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| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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