Daewoo Solar 300LC-V Manual page 369

Problem
Piston and shoe
Shoe and swash
plate
Piston and cylinder
Cylinder and valve
plate
Pressure and
spherical bush
TRAVEL REDUCTION GEAR
General Caution Matters
1. Check whether damages occur in transportation.
2. Check whether bolts are loose or rated oil quantities fill.
3. When working, close piping port.
4. Before fitting pipe, fill oil in case of motor part adequately.
Problem
Temperature of reduction gear housing is high. (Over 60°C of ambient temperature)
Gear oil is
insufficient.
Bearing is
damaged.
Gear is damaged
Leakage phenomena occur.
Assembling
surfaces leak
Leaks from plug
Leaks from floating
seal
surface of housing
Abnormal noises occur.; Disassemble reduction gear and replace abnormal parts after inspecting
parts.
Travel Motor (with Gearbox)
Possible Cause
Excessive load swing of motor
Temperature increasing
Roughness of sliding surfaces poor
Hydraulic oil and lubricating poor
Possible Cause
Lubricating poor due to insufficient gear oil
Heat due to bearing damaged
Heat due to pitting or damaging of gear
tooth
Bolt loose
Liquid gasket is not applied.
Plug loose
Seal tape is not wound
Sliding surface damaged or stuck
O-ring damaged
Casting surface cracked
Remedy
Check relief valve operation.
Check circuit.
Replace or repair abnormal parts.
Replace hydraulic oil.
Remedy
Fill gear oil in rated quantity.
Replace bearing.
Replace gear.
Tighten rated torque.
Tighten rated torque after
applying liquid gasket.
Tighten rated torque.
Apply seal tape.
Replace
Replace
Replace
S0707315K
Page 25