Direct Lift HR8000 - Manual (Page 21)

TWO COLUMN 8K FLOOR PLATE LIFT CO7589 IN50014 Rev. D 03/2/2010 21
1. Check anchor bolts torque to 50 ft-lbs for the ¾ in. anchor bolts. Do not use an impact
wrench to tighten anchor bolts.
2. Check floor for stress cracks near anchor bolts.
3. Check hydraulic oil level.
4. Check and tighten bolts, nuts, and screws.
5. Check cylinder pulley assembly for free movement or excessive wear on cylinder yoke
or pulley pin.
6. Check cable pulley for free movement and excessive wear.
• Yearly Maintenance
1. Lubricate chains
2. Grease rub blocks and column surface contacting rub blocks
3. Change the hydraulic fluid - good maintenance procedure makes it mandatory to keep
hydraulic fluid clean. No hard fast rules can be established; - operating temperature,
type of service, contamination levels, filtration, and chemical composition of fluid should
be considered. If operating in dusty environment shorter interval may be required.
•
Special Maintenance Tasks
NOTE: The following items should only be performed by a trained maintenance expert:
•
Replacement of hydraulic hoses.
• Replacement of chains and rollers.
• Replacement of cables and sheaves.
• Replacement or rebuilding air and hydraulic cylinders as required.
• Replacement or rebuilding pumps / motors as required.
• Checking of hydraulic cylinder rod and rod end (threads) for deformation or damage.
CAUTION!!
Relocating or changing components may cause problems. Each component in the
system must be compatible; an undersized or restricted line will cause a drop in pressure.
All valve, pump, and hose connections should be sealed and/or capped until just prior to
use. Air hoses can be used to clean fittings and other components. However, the air
supply must be filtered and dry to prevent contamination. Most important is cleanliness;
Contamination is the most frequent cause of malfunction or failure of hydraulic
equipment.