1998 force 75 hp tilt stuck...only clicks...no movement.

[capnstabbin]

my motor is stuck in the down position when I hit the trim I only hear clicking noise . I know I am going to have to be to replace it for filled with fluid or something what's my next plan of attack

 

[TwoFish]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Does it click when trying to move the trim in both directions?

These motors have two relays, one for up and one for down. You may have a faulty relay.

You could also use a multimeter to see if the trim motor is getting any power. The relay could still be switching but not sending any power to the trim motor.

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

follow trim motor wires into engine compartment. disconnect them from relay harness and hotwire to battery. if motor does not spin then it is bad. if motor spins but system does not move then hydraulics bad. if motor spins and hydraulics move then relay/switch is bad.

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Yes I get a click in both directions, up and down.


RRitt... if its the hydraulics are bad what is done to fix that?

 

[BobList]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

just a quick and dirty guess.. the relays click, so you know the trim switch, and the relays are getting power. The relays click, so for a quicky guess, they work ok also. The click is the contacts closing inside the relay, this contact allows the "larger" main voltage to the pump motor to flow.
A relay's job is to utilize a very small current to control a large current... otherwise, your trim switch would be the size of a doorknob, and have 1/2" wires attached to it.
I would check and clean the big wires at the battery, reclean and tighten your ground wires, ( yes, ALL of them), and check to see if the pump itself is thumping, or "trying" to move when you hear the relays click. swap your relay's positions with each other..
I would venture to guess a dirty connection, or low voltage to the pump motor, caused by something simple, but overlooked.

Bob List

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Bob,
Both directions click and thump, if I try in the same direction twice in a row I get a click/thump then onlny the relays clicking on the 2nd try in the same direction.

Should I pull the boat or can this repair be done in the water?

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Yes I get a click in both directions, up and down.


RRitt... if its the hydraulics are bad what is done to fix that?

does the motor run when you hotwire it?
The clicks don't mean anything unless you also know whether or not the motor spins when hotwired.

If the hydraulics are bad you either go toa dealer and buy a new system, go to a parker hanfin dealer authorized to servie oildyne and get it rebuilt, or go to ebay and swap it for a rebuilt system.

I'm not putting hydraulics at top of list. I'd put a fuse or a motor at top of my list. There should be fuse or circuit breaker between high amp feed and relays. Check that second. Hotwire the motor first to make sure it isn't DOA. If motor bad then don't bother trying to fix. Costs more to fix than replace. Bad fix will give bad results and you just end up wasting lot of time and maybe getting stuck on ramp. Better to just buy a new mercury, Arco, or sierra. OEM is best. Make sure to put in ground strap and avoid chinese motors.

 

[BobList]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

if you get a thump, I'd wager the motor WANTS to spin, but something, somewhere is jammed/stuck. Bear in mind I am an automotive mechanic, and my only experience with a system like trim/tilt is power convertable tops... at this point I'd look for a binding/jammed mechanism, but that's in a car!
Online diag gets harder now, someone might have to see what's going on in real life.... there's guys on this board who know waaaay more than me about trim/tilt. I'd still eliminate ground and power dirty/loose connections first, though.
Maybe tap the motor housing LIGHTLY with a hammer while operating the tilt, but tap on an area where there is a good weld, or the like.. don't ding the housing if at all possible... use a block of wood or a dead blow hammer if ya got one.
Is this the first time this year you've tried it?.. or did it work ok yesterday, last week, etc.?

Bob List

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

It worked yesterday, then it had a noise I never heard while under way, I got to my destination and stopped for a while. Started back up and the motor would not move, at one point I was hitting the switch and getting nothing. Then it fianlly started to move but only down, which was good, I could then get home.

So now as its all the way down, I skipped the relays and went right to a 12v connection to test the motor, it sounds like it wants to move but wont. It thumps once in each direction. if I try to up twice or down twice I only get one thump...

So bypassing the relays its no longer a connection thing. Its gotta be the motor it self or a jam like you said.

The only difference in the past few rides I have taken is that when this started to fail I had more passengers (weight) than I ever had with this setup.

 

[BobList]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

well, I'd say time to get a pro to check it out!.. anyway, one more thing i'd try.. if the engine can be jacked up or raised manually, do that, support it somehow, and then try and operate it with no weight on the rams.. mine just sits on them, I think. Check your pivot points at the hinge the engine rotates up and down on.. make sure none broke or something. But I'd still wait to see who chimes in on this thread who knows more than I do.

I don't like how you described " The Noise You've Never Heard Before". Strikes fear into a mechanic's heart........... :^)

Bob List

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

It worked yesterday, then it had a noise I never heard while under way, I got to my destination and stopped for a while. Started back up and the motor would not move, at one point I was hitting the switch and getting nothing. Then it fianlly started to move but only down, which was good, I could then get home.

So now as its all the way down, I skipped the relays and went right to a 12v connection to test the motor, it sounds like it wants to move but wont. It thumps once in each direction. if I try to up twice or down twice I only get one thump...

So bypassing the relays its no longer a connection thing. Its gotta be the motor it self or a jam like you said.

The only difference in the past few rides I have taken is that when this started to fail I had more passengers (weight) than I ever had with this setup.

i have no idea what's wrong.
it it has no history of drifting down and the top seal on ram still looks pliable then probably - maybe - could be - well, it's worth a try - the motor.

but motors don't make noises unless your finger is on the switch and they are not often loud enough to hear over the engine. If you heard a noise while cruising then it was pobably something in the hydraulics popping. In which case the motor might be perfectly fine but the system has so much trapped pressure that it can't spin.

either way, don't go beating on it with a hammer or anything. you're likely to start a crack in a magnet or brush. they are not designed to be whacked.

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

OK, So the boats out of the water and the pump motor is shot, I drained it, then removed the motor cover and all inside the magnets are broken.... I need a new one, whats the motor cost for a cheapo replacement and where Do I get one, Its a 1998 Force 75
s/n is OE334395

I am the "pro" on duty for this job, you guys are the brain and I am the hands

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

a used parker hanafin / oildyne is better than a new chinese. They usually last 20 years or so.

i guess i'd check craigslist, amazon, and ebay for a used one in the $50 range.

 

[BobList]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

I've heard that Tecumseh has this motor cheaper than anyone (new). I'd check and see if they sell refurbished or something, if Ebay/Craigslist is a bust.


Bob

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

I found one online it has a resevoir as well.
ebay

What am I looking for and what can fall apart when I take out the the four allen screws(#3 below)?

Are all those small parts gonna fall out?

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

i'd keep looking. that thar is a chinese motor.

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

I dont care Chinese Shminese, but really, whats gonna happen when I take those four screws out.

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Let me guess this one
http://www.iboats.com/Mariner-Mercury-Marine-Force-Chrysler-Marine-Replacement-Power-Tilt-and-Trim-Motor-6276-Arco/dm/*******.238115625--**********.413555726--view_id.185157

 

[RRitt]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

Let me guess this one
http://www.iboats.com/Mariner-Mercury-Marine-Force-Chrysler-Marine-Replacement-Power-Tilt-and-Trim-Motor-6276-Arco/dm/*******.238115625--**********.413555726--view_id.185157

I have been happy with the quality of Arco across all engines. Sierra is a good product for your system too. I've never been overly impressed with API - I'm an engineer and sloppy end play tolerance is just so basic that it's unforgiveable. Try amazon or google shopping. You should be able to find a good used one for $50 or a new good one for $200ish.

The original is still the best. Yours should not have broken so soon. My guess is that your anode strap is missing or somebody forgot to check the anode itself and it got covered up with residue.
The only other common reason for premature failure is salty or acidic water.

The chinese motors are just crummily built. The main bolts are plain steel (not even zinc plated!) and the sealing washers are plain steel with an inferior grade rubber. The paint bubbles and cracks off much more quickly and the windings short against the frame causing accelerated corrosion. The original motor is good for 15-20 years and the cihinese motor is good for 3 or so. Other than that, I guess the chinese is fine. It's your boat.

 

[capnstabbin]

Re: 1998 force 75 hp tilt stuck...only clicks...no movement.

WHAT AM I GOING TO FIND WHEN I REMOVE THE FOUR HEX SCREWS,,,,, THIS IS THE ONLY QUESTION I WANT ANSWERED?
I have never done this before, this is what I want to know.

$50 Dollars, I have never seen one on ebay or amazon, but now I am using a cross reference part number, and I am coming up with more options in all my searches.

I am replacing one that looks like its from China and after tearing it down the stap was fine, not alot of corrosion but the magnets inside were shattered, possibly from the motor getting stuck while on the water, I did use a rubber handled screw driver to hopefully knock it loose, no luck, I drove home with the motor all the way down.


WHAT AM I GOING TO FIND WHEN I REMOVE THE FOUR HEX SCREWS,,,,, THIS IS THE ONLY QUESTION I WANT ANSWERED?
I have never done this before, this is what I want to know.