Trim Question

[sebagolake19]

Hi Guys,

Can someone please tell me why when I trim the outdrive my gauge either reads completely trimmed or no trimmed at all. There is no gradual reading? What should I do to check the problem. Should I reset the trim sender on the starboard side? Is the sender something you can remove and clean easily?

Any help is appreciated. Thanks,

 

[ziggy]

Re: Trim Question

don't know what kinda egine/drive ya got..... http://forums.iboats.com/showthread.php?t=220416
on my old boat. to test the gage, diconnect the send wire and key on. gage should be full up. key off. jumper wire between send terminal and ground. key on. gage should be full down.....
from yer discription. i'd think the gage is ok and would move on to the why's and wherefores on the sender too......

 

[sebagolake19]

Re: Trim Question

The motor is a 3.7L 165HP and the outdrive is a 1987 Alpha One.

Thanks

 

[ziggy]

Re: Trim Question

looks like this is what ya need if ya don't have one....

Service Manual #8 1985 to 1989 Merc Marine 4 cyl (Newer 470's)
http://www-alt.mercurymarine.com/mne...l/08/cover.pdf

 

[Don S]

Re: Trim Question

Actually Ziggy, he needs the outdrive manual for trim sender info. Specifically section 4A.

Service Manual #6 R, MR, Alpha I outdrives 1983 to 1990
Must open each section individually to save.
http://www-alt.mercurymarine.com/mnetdata/SERVICE/CRUISER/Servmanl/6/6covr3.pdf

 

[ziggy]

Re: Trim Question

thanks for the correction..... i hate misleading someone.......

 

[sebagolake19]

Re: Trim Question

Thanks for the replies. Can someone please tell me if the new style Trim Senders can be disassembled and cleaned?

 

[dry dock]

Re: Trim Question

replace with new ones. not a easy/quick job i waited untill i needed to replace my bellows and shift cable, you need to take it all apart to get to it.

 

[BAYLINER185]

Re: Trim Question

Two answer 2 questons posted ....NO the new sender and limit switch cant be taken apart like the old ones.


Two: as I posted this exactly in another post, most of it pertains to this as well:


The trim sender is on the starboard side of the stern drive mounted right on the gymbal ring hinge pin.


What your gauge is doing sounds like the sender is not set properly. If one was to remove the sender completly and move it by hand this very thing would happen. The gauge moves from full up to down with the slightest amount of the sender turning.

What you need to do is lower your drive till the trim pump makes that funny noise when it reaches the full down position. Set the trim sender so that the gauge just starts to read full down position. Put it back on the gymbal ring if you did remove it completly to set it or if you just loosened the two set screws turn the entire sender until the gauge reads full down. Tighten the screws and raise the drive. Watch the gauge and see what it does.

IF you pulled the sender off the gymbal ring and are able to watch the gauge as you turn the sender SLOWLY and the gauge jumps all over the place then its problably shot. If you turn it too fast it will just peg one side to the other you need to do it really slow and if you can "Control" the pointer on your gauge then the sender is working properly.

I just replaced the sender and limit switch on my drive while the entire transom plate was off the boat for a major servcing. You can do it with everything installed it just depends on how much room you have to work with that will make it easy or really hard. You have to replace both the sender and limit switch. You will need the manual to know what the full TRIMED UP ( not trailer ) measurment / posiiton is ( 22" for a BRAVO I )

Hope this helps determine your status.