Adding hydraulic steering fluid

monfried

Active member
Joined
Dec 5, 2017
Messages
28
Fluid Motion Model
C-302 SC
Hull Identification Number
FLMT3117K021
Vessel Name
The Lovely Martha
Learned a good lesson yesterday about adding hydraulic steering fluid, a tip that'll likely be a "duh" to most TugNuts and DIY'ers.

On a 25 mile cruise with a bunch of other boats yesterday, it became quickly obvious that my 2017 RT29CB needed steering fluid added (steering required near-continuous wheel pressure to starboard). Upon arrival at our destination, I opened the cap behind the wheel at the main helm - and the fluid level was plentiful. Mentioned this to a fellow cruiser, who took one look at the topside helm and said, "Always start at the highest point!" And, of course, the steering fluid level at that helm was very low.

In addition, he made sure that my wife and I turned the wheel at each helm (first upper, then lower) many times to clear any air pockets in the line. We kept turning them from extreme left to extreme right until there were only six or so turns possible in each direction. The air bubbles were released back into the fluid filling hose after the fluid bottle was lowered below the wheel so no additional fluid was flowing.
 
You should not need to add fluid...its a closed system.

Check everywhere for leaks. If none, there may be a condition with the autopilot where it allows backflow of pressure. There is a check value that can be added to handle that. And then you need to bleed the system; not a DIY job.
 
Thank you, Shibumi!
 
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