Reprogramming min / max trim position on a Volvo Penta SX drive

[BartW]

After disconnecting and reconnecting the electric and gauches on the VP D3’s , (maintenance works)
It appears that the min / max position of one SX leg is slightly off,
One legg doesn’t go full down anymore,
The electronic control stops the hydraulic pump before the cylinder has reached it maximum "in" position.

I remember from long ago, that this max down and max up position can be programmed with a sequence of pushing the EDC display buttons,
But don’t remember the sequence.

Anybody here knows how to do this ?
or has a workshopmanual on the SX drive ?
thanks for advice !

 

[jrudge]

My understanding was that there was a sensor that fed back the trim level to the system. My sensor failed and was replaced with an "upgraded version" hence how I know this!

Mine was on a T40 and was a DPH drive, so I have don't know re the SX drive, but Volvo don't really seem to be the company of innovation so a pure guess would say this is similar?

 

[volvopaul]

Hi Bart, are engine D3? If so I'll explain.
Ah yes just read again.

Right, set drive in lowest position, place multi meter on wires that give a reading, there are 3 so play about till you find the correct two.
Twist the pot sensor until you get 11 ohms, fit the sender, go to the helm and play up and down a few times, you will see the analog gauge if fitted and the digital display alter itself after the first up/ down trim.
If it does t go all the way down slacken switch and turn until it gives -6 and play again.
Simple job.
No vodia req to set up.

 

[GrahamHR]

Isn't that the same procedure as for the petrol powered boats with the SX/ DPS ? 11 Ohms fully down. They ( or at least the DPS) started off with a 3 wire sender and an electronic control box where the maximum trim angle could be set. The senders were c**p and failed very often so they changed to a 2 wire sender without the electronic box ( trim limited by internal stops fitted into the trim cylinders). Then they went back to a 3 wire trim sender, why, if the 3rd wire does nothing ? It was by all accounts the 3rd wire that used to fail where it entered the unit !

 

[BartW]

Right, set drive in lowest position, place multi meter on wires that give a reading, there are 3 so play about till you find the correct two.
Twist the pot sensor until you get 11 ohms, fit the sender, go to the helm and play up and down a few times, you will see the analog gauge if fitted and the digital display alter itself after the first up/ down trim.
If it does t go all the way down slacken switch and turn until it gives -6 and play again.
Simple job.
No vodia req to set up.

thanks Paul, really helpfull as I didn't consider the position sensor,
by turning this a few degrees, we can now reach the lowest position again,

BUT

there is something like a max and min position programmed in the display,
I remember one occasion when the engineer from VP Belgium explained me on the phone how to change that setting
it was a combination of pushing and turning (?) the controll button on the EDC panel
that was after a big repair on one leg, and they forgot to reprogram max up position, and a not low enough "down" position,

now I have a similar problem, one leg goes down untill the hydraulic pump goes in bypass (it keeps on pumpung), it should automatically "stop" in the down position, beforen it reaches the hydraulic limit.
the same for completely up, now one leg touches the platform, it was possible to program the stop position right before touching the platform

could you find out how this programming is done ? much appreciated !!

 

[Andyroonot]