Maintenance Checks; Bleeding The System - Raymarine E12207 Installation Instructions Manual

5.1 Maintenance checks

Regular maintenance is required to ensure optimum operation.
Regular checks
• Check all mountings are secure, especially the hydraulic ram
mounting foot.
• Check the tiller pin is securely connected to rod end and tiller
arm or rudder quadrant.
• Check hydraulic ram alignment, as described in this handbook.
• Check all pipes for any signs of wear or damage.
• Check all cables and electrical connections for any signs of wear
or damage.
• Lubricate the rod end. Use only a good quality marine grease that
is compatible with nitrile seals.
Annual checks
• Check the hydraulic fluid level. The fluid in the reservoir should
be between the "minimum" and "maximum" levels indicated on
the reservoir. Top-up the fluid if necessary, using a suitable oil as
detailed in Appendix A Technical
• Check the Hydraulic Linear Drive system for external oil loss,
which may indicate that the system needs bleeding.
36
specification.

5.2 Bleeding the system

Note: Raymarine recommends that bleeding the system is
undertaken by an authorized Raymarine dealer.
Before commencing ensure the oil and any storage containers are
clean and free of contamination.
1. Ensure the reservoir tap is in the "ON" position.
2. Push the hydraulic rod in so that it is fully retracted.
3. Fill the reservoir and slacken the pipes connected to the
hydraulic ram unit. Do NOT disconnect the pipes.
4. Re-tighten the pipes once the oil emerges from the fittings.
5. Run the pump in order to direct flow to the hydraulic cylinder
ports.
6. Energise the cylinder solenoid and slowly pull the hydraulic rod
out until it is fully extended. Observe the oil level in the reservoir
and top up if necessary, using the oil recommended in
A Technical specification
The oil level will rise when the rod is retracted and may overflow.
7. Fully retract the rod, again observing the oil level in the reservoir
and topping up as needed. Repeat until no more air can be
seen to be rising into the reservoir and the pump takes over.
De-energise the solenoid.
8. To complete the bleeding, energise the cylinder solenoid again
and run the pump in both directions to extend and retract
the hydraulic rod. Note that the cylinder may need manually
assisting at first to purge any remaining air in the system.
9. Top up the reservoir if necessary to the level indicated.
.
Hydraulic Linear Drive Installation instructions
Appendix