Slow trim tabs.

L

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
My trim tabs seem to be slow. What could cause this? There is plenty of fluid.

I also do not have an indicator that would tell me there position either. Because there so slow, it's difficult to judge sometimes if the tabs have moved any while underway.

How fast should they move from one extreme to the other?

Thanks!!
 
G

gcboat

Lieutenant Commander
Joined
May 29, 2007
Messages
1,822
Re: Slow trim tabs.

Hydraulic tabs are not the fastest things in the world to start with. If you have noticed a deterioration of late it could be a loose fitting, might of hit something unknown to you causing a bind somewhere, could also be the pump itself going bad. I'd shoot the electrical for a loose or corroded wire - bound or kinked line or just the switch itself.
It really is a very basic system so your options for faults should be fairly straightforward.
If it is a Bennett system here is their link to possibly troubleshoot:http://www.bennetttrimtabs.com/
 
L

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
Re: Slow trim tabs.

Thanks for the link. I've had the boat for only a month so I don't know if this is normal or not....but I'll check the link.

Thanks again.
 
dingbat

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
17,177
Re: Slow trim tabs.

I've never timed them but I'd say something like 6-8 seconds from full up to full down.
 
L

lmannyr

Master Chief Petty Officer
Joined
Jul 5, 2007
Messages
815
Re: Slow trim tabs.

Hmm..Mine probably take about 20-30 secs....
 
dingbat

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
17,177
Re: Slow trim tabs.

I got digging around on the Bennett website and they say full up to full down individually 4-5 seconds, in combination in 9-10 seconds so I guess I was off by a second or so.

I'd check all your power connections to make sure they are clean. Check the voltage to the power unit.

Disconnect the hydraulic lines at transom and try pulling the actuators down by hand to make sure they?re not bound up
 
M

mtnrat

Chief Petty Officer
Joined
Jul 29, 2006
Messages
419
Re: Slow trim tabs.

Check the fluid level. Make sure you check at the full up position.
 
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