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Trim Leaks Down

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Larry (Bo) Bolander

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I have a "94" 115 Mercury motor. My motor won't stay up. I tried trimming it up and down a few times to purge the air out, didn't work.

I noticed a small leak in the filler plug. Going to buy a new one today.

Is there a torque specification for the filler plug?

Any other solutions or do I need to buy a new tilt and trim unit? (It's the early version with the black filler plug)
 

Larry (Bo) Bolander

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Finally got a new plug. While I was there, I bought a new release valve plug.
Naturally I lost all the fluid when I took the plug out.

Dropped the bow of the boat/trailer all the way to the ground to get maximum amount of fluid back in the tilt/trim unit.

Had the motor up as far as it would go.
Couldn't get near as much fluid in as what came out.

Anyway, got as much fluid in as possible, tightened both plugs and now the motor won't go up or down.

Where did I go wrong?
 

jerry shack

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You still got air in the pump. Run the trim and keep opening the fill plug to get the air out and keep adding fluid. Some times you will have to help the motor up by hand while running the pump motor. That's a good time to add fluid get a board or something to support the motor from falling down .
 

Larry (Bo) Bolander

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I tried to raise the motor but, it wouldn't move at all. I tried lifting it but, with my bad back, it was a no go.

I finally gave up and took it to my local boat marina. They said the tilt/trim unit was bad, needed to be replaced. ( of course it did)

$1400.00 for a new tilt/trim!! I replaced one myself several years ago, parts were $700.00. Has the cost gone up that much or am I getting reamed?
 

jerry shack

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I checked and the price of a new unit from Mercury is $1,107.84 Possibly the $1400.00 that included the install also. However I did find some other units a lot cheaper but not new.

 

Old Outlaw

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I checked and the price of a new unit from Mercury is $1,107.84 Possibly the $1400.00 that included the install also. However I did find some other units a lot cheaper but not new.

Most hydraulic cylinders can be rebuilt. Around at some of the shops that do that sort of thing.
 

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