Toro 03113SL Rev E Greensmaster 3150 Service Manual

Testing
The most effective method for isolating problems in the
hydraulic system is by  using hydraulic test equipment
such as pressure gauges and flow meters in the circuits
during  various  operational  checks (see  the  Special
Tools section in this Chapter).
1.   Clean machine thoroughly before disconnecting or
disassembling any hydraulic components. Always keep
in mind the need for  cleanliness when working on hy-
draulic equipment. Contamination will cause excessive
wear of components.
Before Performing Hydraulic Tests
2.   To  prevent  hydraulic  system  contamination,  put
metal caps or plugs on any hydraulic lines left open or
exposed during testing or removal of components.
IMPORTANT: All obvious areas such as oil supply,
filter, binding  linkages, loose fasteners,  improper
adjustments, solenoid valve operation, or electrical
connections/circuits must  be checked  before as-
suming that a hydraulic component is the source of
the problem.
3.   The  engine must be  in good operating  condition.
Engine speed  will  affect test  accuracy. Check  pump
speed with a phototac when performing hydraulic tests.
4.
When using tester with pressure and flow capabili-
Precautions for Hydraulic Testing
ties, the inlet and the outlet hoses must be properly con-
nected  and not  reversed  to prevent  damage  to  the
hydraulic tester or components.
CAUTION
5.
When using tester with pressure and flow capabili-
ties, completely open load valve in the hydraulic tester
to minimize the possibility of damaging components.
Failure to use gauges with recommended pres-
sure  (psi)  rating as  listed  in  test  procedures
couldresultindamagetothegaugeandpossible
personal injury from leaking hot oil.
6.
sure that they are not cross--threaded before tightening
them with a wrench.
Install fittings finger  tight and far enough to  make
All  testing  should   be  performed  by  two  (2)
people.Onepersonshouldbeintheseattooper-
ate the machine, and the other should read and
record test results.
7.
Position tester hoses to prevent rotating machine
parts from contacting and damaging the hoses or tester.
8.
necting test equipment, make sure tank is full.
Check oil level in the hydraulic reservoir. After con-
Operate all hydraulic controls to relieve system
pressure and avoid injury from pressurized hy-
draulic oil. Controls  must be operated with the
ignition switch in OFF.Remove key from the igni-
tion switch.
9.
binding,or broken parts.
Check  control linkages  for improper  adjustment,
10.
Allhydraulictestsshouldbemadewiththehydraulic
oil at normal operating temperature.
WARNING
11.
Record the results of all performed hydraulic tests.
Hydraulic Testing
Use the Hydraulic Schematic, Hydraulic Flow Dia-
Beforedisconnectingorperforminganyworkon
the hydraulic system, all pressure in the system
must be relieved and all rotating machine parts
must be stopped. Stop engine; lower or support
attachments.
1.
grams, and  the Troubleshooting section  found in this
Chapter to assist in problem identification and solution.
Keep body and hands away from pin hole leaks
or nozzles that eject hydraulic fluid  under high
pressure. Do not use hands to search for leaks;
use paper or cardboard. Hydraulic  fluid escap-
ing under pressure can have sufficient force to
penetrate the  skin and cause  serious injury. If
fluid is injected into the skin, it must be surgical-
ly removed within a few hours by a doctor famil-
iar with this type of injury. Gangrene may result
from such an injury.
2.   Hydraulic  system problems (e.g. low  hydraulic oil
level, contaminated oil, incorrect engine speed) will af-
fect the entire hydraulic system.
3.
For traction related problems (e.g. machine will not
go up an incline), use the following Tests:
A.  Traction Drive Hydrostat (P3) Flow.
B.  Wheel Motor Efficiency.
C. Charge Relief Valve (R4) Pressure.
Hydraulic System (Rev. E)
Page 4 -- 28
Greensmaster 3150
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Toro 03113SL Rev E Greensmaster 3150 Service Manual SKU UPC Model
kurt on May 29, 2014.

Safety switches not working


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