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95 - 2
Section E
Hydraulics
9803/6400
Section E
95 - 2
Issue 2*
Slew Motor
Fault Finding (cont’d)
Table 2.
No.
Part Inspected
Repair
a
Wear of the sliding surface of balance plate
21
.
Repair or renew the part
b
Damage to sliding surface of cam plate
6
.
Repair the part or renew the motor.
c
Damage to sliding surface of the piston assemblies
8
.
Repair the part or renew the motor.
d
External wear to the piston assemblies
8
.
Repair the part or renew the motor.
e
Wear to piston bores in cylinder assembly
24
.
Renew the motor.
f
Damage to Teflon ring
19
or ‘O’-rings
52
.
Renew the part.
Symptom
Cause
External Inspection
Countermeasure
Repair
Wear or seizure of the
Open motor inlet and
High possibility of
Inspect the parts and
motor sliding surfaces.
outlet ports and apply 20
internal damage to the
bearing according to
kgf/cm
2
(284 lbf/in
2
) pilot
motor if the supply shaft
Table 2 a-e and renew
pressure to the brake
does not rotate smoothly
any defective parts.
release port.Try to rotate
when this torque is
the shaft with a torque of
applied. Dismantle and
approx. 39.32 Nm
inspect.
(29 lbf ft).
Relief valve in the circuit
Measure relief pressure.
Reset to the prescribed
is not set correctly.
setting.
Internal damage to the
Check if any metallic
High possibility of
Repair or renew
motor.
matter is deposited in the
internal damage to the
damaged parts. Renew
motor drain oil or drain
motor if metallic matter
the motor assembly.
filter.
is discovered.
Dismantle and inspect.
Large amount of air
Check the oil in the tank
Thoroughly bleed the air.
mixed in the oil.
and motor casing.
Loosening of bolts or
Check if the piping
Tighten to the specified
pipes
connections, attachment
torque.
mounting bolts, motor
attachment bolts or other
bolts are loose.
O-ring is damaged
Renew O-rings.
Seal face is damaged.
Repair seal face or
renew.
Bolts are loose.
Check the bolt tightness.
Tighten the bolts to the
correct torque.
Insufficient torque
Abnormal noise
Oil leakage from
mating surfaces
Summary of Contents for JS 200 Series
Page 57: ...9 1 Section 3 Routine Maintenance 9803 6400 Section 3 9 1 Issue 2 Component Location Diagram...
Page 113: ......
Page 137: ...5 3 Section C Electrics 9803 6400 Section C 5 3 Issue 2 Pump Control FLOW CHART...
Page 201: ...10 7 Section C Electrics 9803 6400 Section C 10 7 Issue 1 CAPs II Diagnostic system K C...
Page 215: ...Section E Section E Hydraulics 9803 6400 Issue 2 3 2 3 2 Schematics...
Page 217: ...Section E Section E 9803 6400 Issue 2 3 3 3 3 Hydraulics Schematics...
Page 218: ...3 5 Section E Hydraulics 9803 6400 Section E 3 5 Issue 1 Schematics Shuttle Block JS200 JS240...
Page 232: ...10 1 Section E Hydraulics 9803 6400 Section E 10 1 Issue 1 Hydraulic Pump JS200 JS240...
Page 233: ...10 2 Section E Hydraulics 9803 6400 Section E 10 2 Issue 1 Hydraulic Pump JS200 JS240...
Page 234: ...10 3 Section E Hydraulics 9803 6400 Section E 10 3 Issue 1 Hydraulic Pump JS200 JS240...
Page 263: ...30 2 Section E Hydraulics 9803 6400 Section E 30 2 Issue 1 Control Valve JS200 JS240...
Page 264: ...30 3 Section E Hydraulics 9803 6400 Section E 30 3 Issue 1 Control Valve JS200 JS240...
Page 265: ...30 4 Section E Hydraulics 9803 6400 Section E 30 4 Issue 1 Control Valve JS200 JS240...
Page 266: ...30 5 Section E Hydraulics 9803 6400 Section E 30 5 Issue 1 Control Valve JS200 JS240...
Page 267: ...30 6 Section E Hydraulics 9803 6400 Section E 30 6 Issue 1 Control Valve JS200 JS240...
Page 268: ...30 7 Section E Hydraulics 9803 6400 Section E 30 7 Issue 1 Control Valve JS200 JS240...
Page 327: ...51 12 Section E Hydraulics 9803 6400 Section E 51 12 Issue 1 Solenoid Valve 8 spool...
Page 328: ...55 1 Schematic Section E Hydraulics 9803 6400 Section E 55 1 Issue 1 Shuttle Valve...
Page 330: ...55 3 Schematic Section E Hydraulics 9803 6400 Section E 55 3 Issue 1 Cushion Valves...
Page 481: ...7 15 Section F Transmission 9803 6400 Section F 7 15 Issue 2 Motor...
Page 482: ...7 16 Section F Transmission 9803 6400 Section F 7 16 Issue 1 Motor...