GM Series
TM19040 P.26/31
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This chapter describes the maintenance and inspection. Reflect at least the description on maintenance &
inspection (this chapter) in this document to the operation manual for the customer machine into which GM
is incorporated.
6.1. Precautions on maintenance and inspection
CAUTION
•
Turn off the power to the customer machine before starting maintenance and inspection. If
maintenance or inspection is performed during machine operation, person(s) may get
burned due to high temperature or be caught by the rotating part, causing fatal accidents.
•
Do not perform maintenance and inspection in a subfreezing environment. Failure to
observe this may result in cold injury. Also, if maintenance or inspection is performed in a
subfreezing environment, the temperature difference from the operating temperature
increases and, as the result, the increased pressure in the reduction gears may cause oil
leakage.
•
GM may become hot during operation. After stopping the operation, do not touch GM until it
has cooled down.
•
Wear appropriate clothing and appropriate protective equipment (protective goggles,
protective gloves, and protective footwear).
•
Abnormal noise should be checked during operation. Never touch the machine during the
check.
6.2. Periodical Inspection
z
Periodical inspection list
Inspect the following items at least once in a year.
Lubricant must be replaced based on the operating time. Refer to Section 5.5 Replacing Lubricant (p.23)
and replace as appropriate. For hydraulic oil, replace it appropriately referring to Section 5.3 Replacing
Hydraulic Oil (p.21).
No.
Inspection item
Description
Reference
1
Leakage of lubricant
Check whether there is not a leakage of lubricant from the mating
surface around GM and floating seal section.
6.2.1.
2
Bolt looseness
Check whether each mounting bolt is not loose.
6.2.2.
3
Abnormal noise
Check whether there is not any abnormal noise or sudden change
in sound.
6.2.3.
4
Surface temperature of GM
Check whether surface temperature of GM is abnormally high.
6.2.4.
z
Necessary tools
The typical tools required for maintenance and inspection are listed below.
・
Hexagon wrench
・
Wrench
・
Torque wrench
・
Surface thermometer
