OMC 800 Tilt Motor Bad?

[mt_bulldawg]

I have an '84 SeaRay Monaco 187 with 3.8l and OMC sterndrive. The sterndrive drops with no problems. Getting it back up is a challenge. Solenoid clicks, but often it wont raise up at all - occasionally it'll go up about 1/4 to 1/2 the way up, and once in a great while it'll go all the way up. I replaced the solenoid to no avail. Fuse appears to be okay. Watching the gauges while trying to tilt up, needle goes all the way to the left. Batteries are brand new.

The only way I can get the tilt to go up all the way for sure is to put the battery charger on one of the batteries, turn it to high boost (as in jump starting a car) and then depress the switch. Stern drive goes up right away.

So....depressing switch make it click every time, so think that's okay. Solenoid clicks....is there something I can check in tilt motor? I'm thinking it's the only component left.

Thanks in advance.

 

[JRose_1989]

Re: OMC 800 Tilt Motor Bad?

I don?t think it?s a tilt motor problem, I think it is your battery. It may not be charged enough or it may have a dead cell in it. Therefore by itself with out the charger, it is not putting out enough amps for the motor to rise.
I would try to charge the battery first, and look over all of my connections. If that does not fix the problem I would try replacing the battery.

 

[WizeOne]

Re: OMC 800 Tilt Motor Bad?

Take the motor out, check the brushes and clean the comutator. The motor may also be wet, dirty and or oily inside.

 

[chiefalen]

Re: OMC 800 Tilt Motor Bad?

did u take off the tilt clutch housing cover?i bet its full of water and rust.not allowing the clutch to operate correctly.did u greese the trunions.the zerks are behind the rubber bumpers.pry them off gently don't mix them up.post back after u do those things.

 

[mt_bulldawg]

Re: OMC 800 Tilt Motor Bad?

Thanks for input. As pointed out in original post - brand new batteries (week old), and I charged them both.

So when I dig into this - are we talking the housing on the outside of the transom where the gear is - pull that side plate off and start cleaning up, etc.?

Thanks in advance.

Rick

 

[tysonnathan]

Re: OMC 800 Tilt Motor Bad?

first thing i always do with a motor like that is try tapping on it with a small hammer or mallet. If you are having contact problems inside the motor this will usually tell you. Just hold down the button and tap on the motor casing. If this gets it working, take the motor apart and clean it (brushes, armature, etc)

 

[GiMLit]

Re: OMC 800 Tilt Motor Bad?

From the info given it appears you have

1. New Batteries and charged
2. New Tilt motor - this likely eliminates corroded, poor connections at the harness to the motor as you should have seen that when you replaced the motor

Biggest draw on the electrical system is the starter and the tilt motor and the starter doesn't draw for nearly as long (provided your engine is tuned properly) as the tilt motor. At the point you are talking about in the drives travel you have max load. Tilting down it has almost no load as it has teh weight of the drive assisting it. If you had seized/tight clutches I would suspect you should see reduced movement (slowed slightly) at the same point on the way down.

Often in such a case (at least in automotive) you should be looking for loose, dirty,corroded battery terminals at both ends. Specially check the ground.

Let us know how you make out and what you find.

Later

 

[chiefalen]

Re: OMC 800 Tilt Motor Bad?

yes port side the clutch housing pull the 4 screw get off that stikin cover youll see water gunk pour out keep a bucket handy if your on your driveway.what i would do is use the most powerfull stuff u can get your hands on.u can pull the clutch or try to spray it while its still in the boat.if u pull the clutch do not try to take it apart will need a press to put back together soak it over night in acertone.blow dry it and than let it sit in motor oil for a hour or 2.reinstall it and pack the housing with greese.i know it calls for 30 weight oil believe me pack it with geese.if u dont pull the clutch spray it with brake cleaner or something stronger blow it dry.than spray it with penetrating oil.pack it with greese and than close it up.the 2 rubber bumpers have zerk fitting under them pry them off gently and shoot greese in the fittings till u see it come out the trunion do both sides and put back on the bumpers.see if it works than the tilt.post what happens.good luck oh dont over tighten the screw could bind the clutch.

 

[THE BEEF]

Re: OMC 800 Tilt Motor Bad?

I was getting my 800 stringer ready 2 weeks ago .Did tune up switched to full
mechanical shift. everything was fine.Drive went up and down,no problems then
click, click no more up and down. checked connection,ok.
Bought a new motor on web for $75.00,came in 3 days, dropped it in,drive goes up and down again. Guy told me they go out just like that.
Beef

 

[chiefalen]

Re: OMC 800 Tilt Motor Bad?

its the nature of the beast

 

[ChasR]

Re: OMC 800 Tilt Motor Bad?

I had an OMC 800 on a 78 Seaswirl and it did the same thing. I played with it in the driveway and found that if I loosened the screws for the clutch cover the drive went up and down, no problem. I added an extra gasket to give it additional clearance and haven't had a problem since.

Chas

 

[chiefalen]

Re: OMC 800 Tilt Motor Bad?

the battery has to be fully charged. the trunions have to be greesed.and the clutch housing has to be greesed and cleaned out every year.the housing may have to be cleaned out if u use your boat often a few times during the summer.the housings on the stringers always leak.and can leak into the tilt motor and bilge.the hammerblow coupler could sieze also.must have good power to the tilt motor.other than that its a breeze.haaaaaaaaaaa

 

[mt_bulldawg]

Re: OMC 800 Tilt Motor Bad?

I pulled the clutch plate off tonite port side. First, water poured out. That was followed by a brackish yellow liquid. No signs of rust - so I went about spraying it thoroughly with brake cleaner, followed by penetrating oil. It's drying now.

Should I use a gasket sealer? I couldn't believe the amount of water in there. Will grease trunions and put this back together tomorrow.

Thanks for all the assistance - I'm hoping for better results - looking at 90 degrees on Flathead Lake Saturday, and I'll be out there one way or another......

Rick

 

[WizeOne]

Re: OMC 800 Tilt Motor Bad?

T'would be good if you also followed this advice.

Take the motor out, check the brushes and clean the comutator. The motor may also be wet, dirty and or oily inside.

 

[chiefalen]

Re: OMC 800 Tilt Motor Bad?

good to go nope no gasket sealer just don't over tighten the screws will bind the clutch hows the gasket?when u lift the motor there is a hole halfway up the drive backside its a zek fitting shoot it with greese,greese the turning gear shaft.let us know how it works out.greese the tilt gears.take the prop off hows the seal look any fishing line wrapped around the shaft?a little greese on the splines please than reinstall the prop.the oils in the drives look good?plastick washers on the screws no o-rings please.good luck

 

[mt_bulldawg]

Re: OMC 800 Tilt Motor Bad?

I'll take a grease gun home tonite and hit all those zerks. Is the actual tilt motor inside the engine compartment port side? I didn't get a chance to look last nite, and hoping it's not too hard to get at - I'd like to pull it and clean it up - it's the only part to this tilt system I haven't touched yet.

Thanks.