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Tornado 15
SERVICING HYDRAULICS
THE SEVEN STEPS OF TROUBLE SHOOTING:
1. Talk to the operator. 5. Test probable causes.
2. Know the system - schematics. 6. Repair the system.
3. Inspect the machine. 7. Check for root causes.
4. List probable causes.
GATHER INFORMATION (STEPS 1, 2 AND 3)
Information is very important. Before you can determine why a machine isn't working, you
need to know:
How it works.
Correct pressure settings, gauge readings.
What repairs and maintenance or modications the machine has had.
The symptoms of the failure, in detail.
How the failure occurred.
Often, an operator can tell you something that will help, like whether the failure was sudden
or gradual or whether there were any unusual noises when their machine stopped working.
ISOLATING AND REPAIRING THE TROUBLE (STEPS 4, 5, AND 6)
Based upon the information you have gathered, use your knowledge of hydraulics and
information we have supplied to analyze the problem.
There will probably be more than one possible cause of the malfunction.
Conrm or eliminate the easiest possible causes rst. Save checks that involve downtime
or major disassembly for last.
Always proceed SYSTEMATICALLY, rather than randomly!
This means that every step you take should have a good reason behind it. The efcient
trouble- shooter knows what he is looking for when:
Asking questions.
Reading schematics.
Observing, testing or taking the machine apart.
PREVENTING FUTURE PROBLEMS (STEP 7)
After repairing the machine, consider: Why did the fault occur? Could proper maintenance
have prevented the condition which led to the failure?
Take whatever steps are necessary to reduce the chances of a similar problem occurring
again.
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