Landoll 345D, Руководство оператора

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TROUBLESHOOTING
5-5
Brake Drums
For maintenance procedures, refer to the following
sections:
• “Suspension Maintenance” on page 4-9
• “Alignment” on page 4-10
• “Brake System Maintenance” on page 4-13
• “Hub and Drum Maintenance” on page 4-19
• “Wheel Bearing Lubrication and Adjustment” on
page 4-21
Hydraulic System
Most hydraulic system failures follow the same pattern: a
gradual or sudden loss of pressure or flow with a
resulting loss of cylinder or motor power. Any one of the
system’s components may be at fault. By following
step-by-step procedures, the trouble can be located in a
short time.
PROBLEM PROBABLE CAUSE SOLUTION
EXCESSIVE LOSS OF BRAKES OR
FADING Overheated brake drums Check for defective or misadjusted brake
linings, distorted or over-machined
drums. Also check for operating
conditions or loads that create severe
or excessive brake applications.
BRAKES PULL TO EITHER SIDE Drums of different diameters Replace with drums of same diameter.
Foreign matter in drums Clean drums out
ROUGH OR NOISY BRAKING ACTION Defective drums Pull drums and inspect for any of the
following. Heat spotted drums, grease
spotting, blue drums, scored drums,
excessive wear at rivet holes or edges,
polished drums, out of round drums,
unbalanced drums, worn/damaged
brake components, foreign matter in
drums. Correct situation or replace
defective part(s).
VIBRATION IN RIDE Defective drums or out-of-round Replace drums
Out-of-balance drums Balance drums
PROBLEM PROBABLE CAUSE SOLUTION
SYSTEM INOPERATIVE Not enough oil in system Fill, check for leaks
Wrong oil in system Change oil, see specifications
Filter dirty or clogged Drain oil and replace filter
Hydraulic lines dirty or collapsed Clean or replace as necessary
Air leaks in pump suction line Repair or replace as necessary.
Worn or dirty pump Clean, repair or replace. Check for
contaminated oil. Drain and flush.
Badly worn components Examine for internal leakage. Replace
faulty components. Check for cause of
wear.
Leakage Check all components, and relief valve for
proper settings.
Excessive load Check unit specifications for load limits.
Slipping or broken pump drive Repair or replace couplings. Check for
alignment.