merc trim and tilt

beradtke · #1 08-21-2009, 09:41 PM

i went out to go and run the boat today and the solenoids for the trim and tilt pumps just click . are these merc specfic soleniods or can you just use the ford flat style to replace them? i am pretty sure its the solenoids cause if i jump them the pump turns?

NoBones · #2 08-21-2009, 10:14 PM

If the solenoids are clicking , they are good, your
trim motor is more than likely bad..
If you have any signs of extensive rust on the motor,
water probably got in and finished it off.
Take a hammer and rap the motor while trying
to move the motor up and down.

See ya, Ken

Blue197320 · #3 08-21-2009, 10:33 PM

ive got the automotive 5 pin relays in mine. they went out the other day. the motor started to trim up by itself. they would click but the motor would not trim. i took them out and beat them to make them un-stuck. then it worked fine again. to replace them was $10 each. i went to advance auto parts.

beradtke · #4 08-22-2009, 11:17 AM

thanks guys i will give them both a try.

Bigshrimpin · #5 08-22-2009, 01:44 PM

To check the motor with a three wire Trim and Tilt bypass the solenoid/relay.

blue wire to Positive = Trim UP
green Wire to Positve = Trim Down
Black Wire = Ground (duh!)

Make sure you have a good ground.

I have several sets of these relays/solenoids and I have three wire motors too. The 3 wire motors are a PIA to replace . . . after you do one you'll wish you had the Old Style Single Ram Piston with External Trim and Tilt Pump (Still used on the racing motors).

Blue197320 · #6 08-22-2009, 02:36 PM

big so the old single ram system that ive got in the garage is still worth holding on to?

beradtke · #7 08-23-2009, 12:56 AM

actually that is the system that is on the boat. one really big ram and a remote mount pump and tank. my motor is a 1980 didnt have time to test it today since i was setting tile all day in my master bath remodel.

Bigshrimpin · #8 08-23-2009, 04:53 PM

I have two external pumps too. Same test for the external pump . . . since it has the three wire motor. Could be solenoid/relay . . . or motor. Putting current directly to the motor will test you right away.

beradtke · #9 08-24-2009, 09:34 PM

well i went out there and tapped it with a hammer a few times and it started to work . i stopped going down and it will not restart while being tapped on. i will perform a voltage test when the rain stops.

beradtke · #10 08-30-2009, 12:08 PM

sorry about the delay it is the solenoids. one of the big lug terminals is loose in the housing and makes contact temporally . i need to replace the solenoids, are these the same ones that ford trucks use or are the different since this is a marine enviroment?