Sakai SW300-1, Shop Manual

Page: 183 / 246

10-001
TROUBLESHOOTING
1. TROUBLESHOOTING
1-1. Safety Precautions for Troubleshooting
WARNING
Unexpected machine movement may cause a serious accident. When inspecting the machine while the
engine is running, always follow the instructions below.
• Park the machine on level, fl at ground.
• Apply the parking brake.
• Set chocks in front and behind each drum or tire.
• Make sure that service personnel are given the appropriate information at the appropriate time.
• Make sure that no one can enter any hazardous area.
CAUTION
Do not work on the hydraulic system while the engine is running and the system is hot and under pressure.
Do not disconnect hydraulic hoses or
fi ttings until the system has cooled and pressure has been properly
relieved.
Before removing any plugs from the pressure measurement ports, always release any residual pressure
from the piping and open the cap of the
fl uid tank to release and pressure.
WARNING
Inadvertent starting the engine may cause a serious accident.
When inspecting the engine, make sure to exchange the appropriate cues and hand signal with the person
at the operator station to avoid any accidents.
CAUTION
Before inspecting inside of the engine compartment, always stop the engine.
Contact with the fan, V-belt or exhaust system parts while the engine is running may cause serious injury.
1-2. Important Information for Troubleshooting
Before conducting troubleshooting, it is important to carefully read the operation manual and workshop manual
and understand the electric circuits for each component as well as the structure and function of each system.
Suf
fi cient knowledge of the systems will enable you to identify a possible cause much faster. A fault or problem
may seem to be related to many different factors. To identify the true cause, some experience is needed. To
perform the appropriate troubleshooting, it is important to learn not only the normal operations of the systems but
also the possible symptoms that may occur when an abnormal condition is present.
This chapter explains the possible causes and remedies for likely incidents taken from past experience.
10̲TROUBLESHOOTING̲oku.indd 10-001 10̲TROUBLESHOOTING̲oku.indd 10-001 2012/11/14 20:25:55 2012/11/14 20:25:55