Different steering gear types have different maintenance requirements and depend on the self-inspection maintenance report of the equipment.
Ram-type steering gear
1 year:
- Steering gear PMS log files
- Check the condition of hydraulic hoses
- Check the condition of the ram
5 year:
- Change of actuator seals and bearings
- Renewal of hydraulic oil
- Filter replacement
- Complete overhauling of hydraulic pumps
- Cleaning of cooler (if provided ) and replacement of anodes
10 year:
- Service of distribution valve
- Renewal of flexible couplings for hydraulic pumps
- Replacement of vibration dampers
- Replacement of frequency converters
- Renewal of rubber hoses
- Replace or major overhaul electric motors
Rotary vane-type steering gear
The typical planned maintenance for a rotary vane-type arrangement would be:
5 Year
- Removal of rotary vane cover for inspection
- Replacement of internal seals
- Replacement of internal and upper gland seals
- Renewal of hydraulic oil
- Power pack filter replacement
- Pump shaft seals and flexible couplings
- Checking and calibration of the control system and rudder positioning
10-year
- All the items normally carried out during a 5-year maintenance
- Liners
- Thrust Bearings
- O ring for the hydraulic nut
- Pressure valves
- Seal kit for the valves
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