1900 SRM 964 Troubleshooting
LIFT CYLINDERS
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
Oil leaks from cylinder gland
around piston rod (An oil
ring appears on the piston
rod).
Restriction in the return tube. Remove restriction or install new
tube.
Score on piston rod. Remove any foreign matter. Smooth
rod surface with an oil stone. If oil
still leaks, replace cylinder seals and
O-rings.
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 por-
tion.
Cylinder tube damaged. Replace cylinder tube.
Rod spontaneously retracts. Defective lowering valve. Replace lowering valve.
Defective check valve. Replace check valve.
Scores on inner surface of tube. Smooth surface with an oil stone.
Score on tube. Replace cylinder tube.
Score on piston ring. Replace piston ring.
Wear limit (clearance be-
tween cylinder tube and
wear ring).
Excessive clearance between cylin-
der tube and wear ring.
Replace wear ring (included in pack-
ing kit).
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