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10 - 1
Introduction
It is important before taking measurements that control
conditions are maintained.
a
Position the machine on a level safe site.
b
Adhere strictly to the safety operation.
c
Confirm the setting when an adjustment is made.
The items to prepare are:-
a
The check sheet
b
Tape measure
c
Dial gauge with magnetic stand
d
Angle gauge
e
Chalk
f
Stop watch
Basic Measurement Conditions
When checking the performance valve, certain vehicle
conditions should be fulfiled:-
a
The vehicle should be in the
S
mode.
b
The hydraulic oil temperature should be 45°C-55°C.
c
The engine speed should be within ±50 rpm of the
reference value.
d
The hydraulic equipment should be operated
several times before testing.
e
The operation to be measured should be operated
three times and an average taken.
f
Measure on level hard ground.
These consist of two basic types of measurement:-
1
Speed Measurements
a
Bucket ram speed.
b
Dipper ram speed.
c
Boom ram speed.
d
Slew speed.
e
Travel speed.
2
Other Measurements
a
Travel linearity.
b
Slew backlash.
c
Lateral movement in turntable bearing.
d
Slew brake.
e
Slew lock characteristics.
f
Natural internal leakage, natural ram drop.
g
Ram piston rod seal leakage.
Section 3
Routine Maintenance
9803/6410
Section 3
10 - 1
Issue 1
Performance Evaluation
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
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Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
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Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...