Re: [OMC-Boats] OMC-Boats Digest, Vol 5, Issue 10 tilt stuck

From: Douglas F. Julien, AIA <dfjulien@...>
Date: Tue, 25 Sep 2007 15:15:38 -0500

Hi Kevin

In addition to Lee's comments, from my own experience the cause for the clicking and no action is likely a physical resistance to raising. Perhaps the quadrant gear is out of whack with the small gear that drives it - you can see if the tilt motor spins with the quadrant gear completely off, or "help" the outdrive to lift while your assistant hits the switch - watch it!! to see if there is some binding of these gears.

You might check the lubricant in the clutch casing as well - there's a slotted plug on the side of the casing for this.

Doug Julien, AIA
  ----- Original Message -----
  From: Lee Shuster
  To: Evinrude & Johnson Boats of the 1960's and 70's
  Sent: Tuesday, September 25, 2007 2:48 PM
  Subject: Re: [OMC-Boats] OMC-Boats Digest, Vol 5, Issue 10

  Hi Kevin,

  It's fairly easy to troubleshoot the tilt motor. But you need the following before you begin:

  1) RTFM. Documentation. Do you own or have you looked at a Seloc or OMC manual? You might even find they have them in your public library.

             A wiring diagram is also helpful. I have posted a diagram on my website here:

  2) A basic VOM (Volts-Ohm Meter) and some alligator-clip test leads can be helpful to free up a hand. Or a 12-V test bulb can also be substituted in a pinch.

  3) A freshly and fully charged battery. (Many times relays will "chatter" under load when there simply isn't enough voltage or current available).

  4) Take common-sense safety precautions: Insure there are no lingering gaseous fuel fumes in your work area.


  The basic Tilt circuitry is pretty simple, consisting of five basic elements (any or all of which can cause problems):

  A) Fused 12-volt power source under the dash, that,

  B) feeds a dash-mounted Single-Pole, Double-Throw (SPDT - center-off) switch.

  C) The switch has two output (remote control) wires:

           1) GREEN (think DOWN, as in Green-Grass) and

           2) BLUE (Think UP, as in Blue-Sky),

            both of these small ga wires travel back to the transom area where there are

  D) two RELAYS,

              1) one for UP (blue) and

               2) one for down (green).

                These INDENTICAL Relays (or solenoids) are basically remote controlled switches, that permit the heavier, larger ga. Red wires to pass on the
                high current to drive the

  E) DC tilt motor in the appropriate direction (Up or Down).


  The clicking sound you describe can be caused by several things:

  1) Sometimes high-resistance, dirty, or corroded contacts anywhere in the path (A to E) can cause this sound. Try and troubleshoot using the isolation method. DOES the clicking sound happen with both UP and DOWN operation? Then suspect something that is common to both, such as the tilt motor, or clutch pack, or power source. The impact hammer clutch pack is what allows the sterndrive to kick up when it strikes an underwater object. It is outside the transom and sits next to the quandrant gear. The hammer clutch basically allows the motor to get up a "head-of-steam" before it engages, otherwise the motor stalls (which results in relay chatter).

  2) Personally I'd start and verify that the battery voltage is Ok. The make sure the fuse to the tilt switch is not corroded. Are the connections at the dash-board switch OK? How about the resistance of the small ga (blue/green) wires bewteen the swtch and the relays? The relays are interchangeable. You can swap them out for live testing or emergency backup use (make sure you label all the wires, as it's easy to hook them back up incorrectly!) You also need to check and clean the heavy ga red/black wires that feed the high current to the relays. (Some later models also had a fusible link in the red wire connected to the battery at the starter relay.)

  3) The most common thing to fail on 40+ yr old boats, is corroded wiring. Then the relays also do fail. The tilt motor can and does fail. Don't forget to check to impact/hammer clutch, and lastly, make sure the drive leg itself is totally free and can manually be lifted up and down (have a friend help you do this after removing the quadrant gear.)

  Good luck -- hope this makes sense. Let us know what you find out after following these hints.... Others may wish to chime in with their helpful hints....

  Lee Shuster
  Salt Lake City

  From: omc-boats-bounces@... [mailto:omc-boats-bounces@...] On Behalf Of kevin mcnamara
  Sent: Tuesday, September 25, 2007 9:00 AM
  To: omc-boats@...
  Subject: Re: [OMC-Boats] OMC-Boats Digest, Vol 5, Issue 10

  hi im having a problem with tilt lift not working clicking noise in solenoid can you help
  thanks kj


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Received on Tuesday, 25 September 2007

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