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. It is an important maintenance procedure to keep hydraulic
fluid clean. No hard fast rules though. Operating temperature, type of service,
contamination levels, filtration, and chemical composition of fluid should be considered.
If operating in dusty environment a shorter interval may be required.
Special Maintenance Tasks (performed by a trained maintenance expert only)
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!
Relocate or change components may cause problems. Each component in the
system must be compatible. An undersized or restricted line may cause a drop in pressure. All
valve, pump, and hose connections should be sealed and/or capped until 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.
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