Hyundai HX145 LCR, Руководство пользователя

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4. TRAVEL MOTOR 4. TRAVEL MOTOR
Problem Cause Remedy
Does not
start Pressure is not
developed
·
·
Pump failure
Control valve malfunction
·
·
Check if action other than traveling is
available. If faulty, repair.
Check if spool moves correctly. Repair if
necessary.
Pressure is
developed
·
·
·
·
Brake valve failure
-Sleeve stick
-Check valve stick
Motor failure
-Valve seat seizure
Gear broken and fragment locked
Overloaded
·
·
·
·
Replace brake valve
Replace
-Check hydraulic oil for contamination
Replace reduction gear
Reduce load
Oil leakage Leakage from
engaging sur-
faces
·
·
Scratch on engaging surfaces
Loosening by poor bolt tightening
·
·
Correct surfaces by oilstone or sandpa-
per or replace
Check after retightening
Leakage from
casing
·
·
Plug loosened
Crack formed by stone
·
·
Retighten
Replace reduction gear
Leakage from
fl oating seal
·
·
Sliding surfaces worn
Creep on O-ring
·
·
Replace reduction gear
Replace fl oating seal
Leakage from
hydraulic motor
·
·
·
Bolt loosened
O-ring damaged
Sealing surface scratched
·
·
·
Tighten properly
Replace O-ring
Correct by oilstone or sandpaper
Coasts on slope excessively ·
·
·
Poor volumetric effi ciency of hydraulic
motor
Increase of internal leakage of brake
valve
Parking brake not actuated
-Spring breakage
-Wear of friction plate
·
·
·
·
Replace hydraulic motor
Replace brake valve
Replace spring
Replace parking brake
Excessive temperature on
reduction gear case
·
·
·
Pitting on bearing
Lack of gear oil
Hydraulic oil introduced to gear case
·
·
·
Replace reduction gear
Supply gear oil properly
Check motor and replace oil seal
Meanders Meanders at
low pressure
·
·
Delivery rate is different between right
and left
Motor drain rate is different between
right and left
·
·
Repair pump
Replace motor
Meanders at
high pressure
·
·
Delivery rate is different between right
and left
Motor drain rate is different between
right and left
·
·
Repair regulator or pump
Replace motor
Meanders at
high pressure
·
·
Relief pressure dropped at right and
left brake valve
Main relief pressure dropped at right
or left of control valve
·
·
Replace brake valve
Replace main relief valve
Pump delivery is poor
·
·
Regulator operation poor
External leakage of pump is exces-
sive
·
·
Repair regulator
Repair pump
External leakage of motor is
excessive
-
· Replace motor
TYPE 1 TYPE 1 1) 1)
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