1996 Merc. 40hp 2 stroke

jlh3rd

Lieutenant Junior Grade
Joined
Jul 10, 2017
Messages
1,049
trying to help a GF's son.
tilt/trim motor runs, does exert pressure when trimming down...will not trim up even when manually trying to help it go up. Worked last year.
I tried the bleeding ritual, as much as my back could tolerate. Also, trimming down the motor sounds normal. When trimming up however, it sounds like it gets "weaker" and multiple up/down tries results in the motor shutting off, then it resets. Internal limit switch?
Is it safe to say that the problem is in the trim cylinder seals?

and there is excessive play at the top of the motor's swivel bracket. That'd be the upper bearing , correct?
THAT looks like a major disassembly...?
 
Last edited:

airshot

Admiral
Joined
Jul 22, 2008
Messages
6,563
My first thought is the battery holding 12.6 v or above ? Sounds like reservoir nay not be full, air lock, or pump going bad.
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
14,339
Voltage Drop somewhere between the Up Relay and the Motor

On one of my Inline 6s, there was a lot of Play, that at first looked like the it might be Swivel Bracket, turned out the Upper Motor Mounts had loosened. Powerhead had to come off to tighten and Locktite them.
 
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