Troubleshooting
LIFT ASSEMBLIES
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
Forks fail to elevate. Faulty hydraulic equipment. See Pumps and Hydraulic Cylin-
ders below.
Deformed lifting components. Disassemble and replace dam-
aged parts.
Slow lifting speed and insufficient
handling capacity.
Faulty hydraulic equipment. See Pumps and Hydraulic Cylin-
ders below.
Deformed lifting components. Disassemble and replace dam-
aged parts.
Forks fail to lower. Deformed forks. Disassemble, repair, or replace.
Deformed lifting components. Disassemble, repair, or replace.
Bent hydraulic cylinder piston rod. See Hydraulic Cylinders below.
HYDRAULIC CYLINDERS
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
Oil leaks from cylinder gland around
piston rod (An oil ring appears on
the piston rod).
Foreign matter on packing. Replace packing.
Score on piston rod. Remove any foreign matter.
Smooth rod surface with an oil
stone. If oil still leaks, disassemble
and repack cylinder.
Scores on wiper ring lip. Replace wiper ring.
Unusual distortion of wiper ring. Replace wiper ring.
Chrome plating is stripped. Replace piston rod or renew
chrome plating.
Oil leaks from welded portion. Cylinder tube damaged. Replace cylinder tube.
Troubleshooting 1900 YRM 1506
14
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