270 SLX trim tabs don't make any difference

[munsworth]

Bought this boar recently a 2006 model and found under acceleration the boat keels over to the left, adjusted trim tabs to full movement which doesn't seam to be much movement and it didn't make any difference, is this normal.

 

[270SLX]

Make sure the tabs are actually responding to the helm switches. I can tell you that on my 270 SLX the tabs are very effective. No way should they "not make a difference".

Dennis

 

[munsworth]

We have tried the switches they work and push the rams but only move the trim tabs down about 1 to 1 1/2" giving hardly any angle on the trim tabs apron 10 to 15 degrees.
How far does your ram move.
Thanks for your help.

 

[Tabman]

Munsworth,

The standard travel for a Bennett Trim Tab system is 2-1/2" of piston stroke. We do make some shorter stroke setups, but if I remember correctly SeaRay uses all standard stroke actuators.

Two things to check:

First, is the fluid up to the fill line in the hydraulic power unit's reservoir when both Trim Tabs are fully retracted?

If not use any type of Automatic Transmission Fluid (ATF). Don't worry about the exact brand or type - it will all work, and can even be mixed. To add fluid, remove the Lexan cover on the HPU, locate the "filler stack" in the left front corner of the reservoir. There is a round plug sealing the filler stack. Remove the plug and add fluid to the full line on the reservoir. Note: Add fluid only with the trim tabs fully retracted (up). If your reservoir does not have a full line, add fluid so the fluid level is about 1 inch below the top of the reservoir with the trim tabs fully retracted (up).

Second, if the fluid level is correct, can you please try pushing down hard on one of the Trim Tabs and see if it travels about 2-1/2"? It will take a bit of force since there are return springs in the actuators, about 80 pounds.

Let me know what you find and I will be delighted to help you get them working properly.

Tom McGow
Bennett Marine

 

[offduty]

Munsworth,

The standard travel for a Bennett Trim Tab system is 2-1/2" of piston stroke. We do make some shorter stroke setups, but if I remember correctly SeaRay uses all standard stroke actuators.

Two things to check:

First, is the fluid up to the fill line in the hydraulic power unit's reservoir when both Trim Tabs are fully retracted?

If not use any type of Automatic Transmission Fluid (ATF). Don't worry about the exact brand or type - it will all work, and can even be mixed. To add fluid, remove the Lexan cover on the HPU, locate the "filler stack" in the left front corner of the reservoir. There is a round plug sealing the filler stack. Remove the plug and add fluid to the full line on the reservoir. Note: Add fluid only with the trim tabs fully retracted (up). If your reservoir does not have a full line, add fluid so the fluid level is about 1 inch below the top of the reservoir with the trim tabs fully retracted (up).

Second, if the fluid level is correct, can you please try pushing down hard on one of the Trim Tabs and see if it travels about 2-1/2"? It will take a bit of force since there are return springs in the actuators, about 80 pounds.

Let me know what you find and I will be delighted to help you get them working properly.

Tom McGow
Bennett Marine

This an excellent example of outstanding customer service. Go Bennett!!!!!!!!!!!!!!!!!!!!!!!

 

[munsworth]

Thanks for your help Tom, will check the oil level this weekend, its great to see somebody go to this much trouble.
Regards Mark

 

[Tabman]

Thanks for your help Tom, will check the oil level this weekend, its great to see somebody go to this much trouble.
Regards Mark

Glad I can be of help Mark.

I'll be standing by to see what you find.

Tom McGow
Bennett Marine