|
position
|
item
|
Date
|
Method
|
|
Tank
(including hydraulic oil)
|
leakage
|
weekly
|
Visual checking
|
|
Oil volume
|
weekly
|
Visual checking
|
|
Oil temperature
|
weekly
|
oil thermometer
|
|
cleanliness of hydraulic oil
|
|
vacuum ga(u)ge of oil’s filter¡¢cleaning filter gauze,and it is beter to analyse by instrument
|
|
pump
|
capacity of discharge
|
3 months
|
measuring the rev of hydraulic cylinder or motor
|
|
pressure
|
3 months
|
pressure gauge
|
|
noise
|
3 months
|
audition or noise meter
|
|
temperature of surface
|
3 months
|
Thermometer or touch
|
|
draw air in or leakage from oil seal or seal ring
|
3 months
|
visual check to confirm air bulb, noise in tank
|
|
coupling
|
Abrasion and concentric condition
|
1 year
|
Visual and auditory
|
|
Pressure control valve
|
setting value and noise
|
3 months
|
Pressure and auditory
|
|
control valve of flow
|
Setting vanue
|
3 months
|
rev’s measureing of hydraulic cylinder or motor
|
|
directional control valve
|
running condition
|
3 months
|
directional measuring of hydraulic cylinder or motor
|
|
Condition of leakage inside
|
1 year
|
running condition of hydraulic cylinder or motor at centre position
|
|
Coil’s insulated resistance
|
1 year
|
check with ammeter of 3 phases
|
|
filter
|
cleanliness
|
weekly
|
vacuum ga(u)ge
|
|
cleanliness
|
3 months
|
cleaning
|
|
cooler
|
Capacity of cooling
|
3 months
|
thermometer
|
|
leakage
|
3 months
|
instrument or visualization
|
|
Tubing and pipe clip
|
Leaking oil
|
weekly
|
Visual
|
|
Laxation orquiver
|
weekly
|
Visual and touch
|
|
hydraulic rotation cylinder
|
Motion time
|
weekly
|
time of measuring motion
|
|
quiver, impact
|
weekly
|
Visual and touch
|
|
Leaking oil
|
weekly
|
Visual
|
|
Hydraulic collet
|
lubricant oil supplying
|
weekly
|
greasing before starting up everyday
|
|
cleanout
|
weekly
|
cleanout
|
