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5
TROUBLESHOOTING
SLEW MOTOR
SLEW MOTOR
If you notice that the noise or heat becomes unusually high, it is likely that there is a fault in the machine. If it occurs, stop
the machine immediately and try to locate the faulty section.
The table below shows the cause of the general problem and action to be taken when such problem occurs in the hydraulic
circuits.
Hydraulic motor, brake valve
Symptoms
How/Where?
Major causes
Remedies
Motor fails to start • No pressure at the motor’s inlet
port
• Set pressure of relief valve is too
low
• Pump faulty
• Control valve faulty
• Set correctly
• Repair or replace
• Repair or replace
• There is pressure at the motor’s
inlet port
• Load is too heavy
• Hydraulic motor is faulty
• Reduction gears are faulty
• Reduce the load
• Repair or replace
• Replace the reduc-
tion gears
Motor does not
speed up
• Pump discharge is insufficient
• Too much drain from the pump
• Repair or replace
the pump
• Functional problem of the motor
• Drop in the motor’s volumetric ef-
ficiency
• Replace the motor
Oil is leaking
• Leaking from an oil seal
• Lip is faulty
• Replace the oil seal
• Leaking from the mating surface
• Bolts are loose
• O-ring is faulty
• Mating surface is scratched
• Retighten the bolts
• Replace
• Repair the surface
with a grindstone or
sand paper
Motor produces
abnormal noise
• Noise in the piping
• Piping support is faulty
• Clamp the piping
Temperature
in-
crease at the re-
duction gears
• Lubricating oil
• Oil level is low
• Hydraulic oil is entered
• Add oil
• Replace the reduc-
tion gears
• Gear unit
• Bearings are damaged
• Gear surfaces are damaged
• Replace the reduc-
tion gears
• Replace the reduc-
tion gears
Содержание TB 250
Страница 1: ......
Страница 3: ...1 1 SAFETY 1 Safety alert symbol 1 2 Safety precautions 1 3 Cautions when working 1 9...
Страница 36: ...2 24 2 TIGHTENING TORQUE SERVICE DATA...
Страница 37: ...2 25 2 SERVICE DATA HYDRAULIC CIRCUIT DIAGRAM HYDRAULIC CIRCUIT DIAGRAM Equipped with options 1 2...
Страница 38: ...2 26 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with options 2 2...
Страница 39: ...2 27 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 1 2...
Страница 40: ...2 28 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 2 2...
Страница 41: ...2 29 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 1 2...
Страница 42: ...2 30 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 2 2...
Страница 43: ...2 31 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow angle blade blade oat option 1 2...
Страница 44: ...2 32 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow angle blade blade oat option 2 2...
Страница 46: ...2 34 2 ELECTRIC CIRCUIT DIAGRAM SERVICE DATA First auxiliary hydraulic piping with proportional control...
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Страница 59: ...2 46 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
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Страница 73: ...2 60 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA NAME STANDARD NO...
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Страница 92: ...3 11 3 CONTROL VALVE FUNCTION...
Страница 108: ...4 3 4 SERVICE STANDARDS DISASSEMBLY AND ASSEMBLY Clearance for pin and bushing...
Страница 130: ...4 25 4 UPPER FRAME DISASSEMBLY AND ASSEMBLY 15 Side frame R 16 Side frame L 17 Tool box 18 Cover 19 Bracket 20 Cover 2 2...
Страница 165: ...4 60 4 HYDRAULIC PUMP DISASSEMBLY AND ASSEMBLY f Remove the plug g Remove the spring and the ball...
Страница 267: ...4 162 4 SLEW MOTOR DISASSEMBLY AND ASSEMBLY Special tools Oil seal press tting jig A Collar installation jig B...
Страница 352: ...ENGINE 6 Machine model Mounted engine TB250 4TNV88...