SUNWARD SWDM40 - Page 172

SWDM40 OPERATION & MAINTENANCE MANUAL
171
1. Daily maintenance for hydraulic cylinder
 Check bearing on the two ends of hydraulic cylinder for lubrication every day, and
apply lubricating grease once every one working hour.
 Visual check structural parts of hydraulic cylinder for crack regularly, repair or replace
when necessary.
 Apply hydraulic oil onto piston rod once or twice a week, and extend or retract piston
rod for several times.
 Before long-time storage, apply acid free grease to protect piston rod.
 Don’t clean piston rod with high-pressure water gun, sharp tools, corrosive alkaline
water or grinding materials.
2. Check seal for hydraulic cylinder
 Every time, before or after work, check junction oil tube joints which link with
cylinders for looseness, fasten immediately when necessary.
 Check hydraulic cylinder for leakage before or after work, change damaged seal parts
in the cylinder when necessary.
 If cylinder tubing is damaged, change hydraulic cylinder if necessary (if hydraulic
cylinder is used in a set, the whole cylinder set should be changed at the same time).
3. Note for cylinder maintenance
 Check hydraulic cylinder motions whether it’s correct during operation, if hydraulic
cylinder work slowly, without strength, or no motion, shut down the machine to check
immediately.
 The cylinder is loaded, attention should be paid to safety when repairing or replacing
it.
 The cylinder piston rod should be retracted completely when repairing or maintaining
the balance valve on the cylinder.
 If any questions, please contact with the after-sale service department of SUNWARD
INTELLIGENT EQUIPMENT CO., LTD.