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Hydraulic Systems
Hydraulic Testing
When troubleshooting a hydraulic problem:
Hydraulic Troubleshooting
1.
Know the hydraulic system for the machine:
Study the schematics, Operators Manual and Service
Manual.
Know how the system works and what the relief
valve setting and the pump output should be.
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Know the system
Talk to the operator
Operate the machine
Inspect the machine
List possible causes
2.
Talk to the operator:
How did the machine act just as it started to
malfunction?
Was any “do-it-yourself” service performed or did
anyone else attempt to repair the machine?
How was the machine used and when was
maintenance last performed?
Determine most
likely cause
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Test your findings
3.
Operate the machine:
Operate the machine in conditions simulating when
the malfunction occurred. Verify what the operator
described.
Are the gauges and warning lights operating
correctly.
Do the controls feel spongy or stick.
Check for any unusual sounds, smells, or smoke. At
what speed or operating cycles does this occur.
4.
Inspect the machine:
Check the hydraulic fluid level and condition. Is the
fluid dirty or filters plugged?
Check for overheating. Does the oil have a burnt
odor? Is the oil cooler plugged or lines caked with
dirt?
Look for bent or collapsed fluid lines. Check for
leaks, loose fasteners, cracked welds, binding pivot
points, damaged linkage, etc.
5.
List possible causes:
Note what was reported by the operator and verified
by you.
List what you found during your inspection.
Remember that there may be more than one cause
leading to the failure or malfunction.
6.
Determine which cause is most likely the problem:
Look at your list of most possible causes and
determine which are the most likely. Use the
troubleshooting charts in the Service Manual.
7.
Test your findings
Operate the machine with a hydraulic tester
connected to the suspected malfunctioning circuit. It
may be necessary to replace or adjust a component
to verify your findings.
Toro University Technical Training
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 09169SL |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(1 votes, average: 3 out of 3)
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