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  89 Merc develops will of its own

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Author Topic:   89 Merc develops will of its own
Denny posted 05-03-2002 01:06 AM ET (US)   Profile for Denny   Send Email to Denny  
Iíve got a 89 Merc 100 hp trim and tilt that has started to intermittently stop working. It will work fine then, it will not come up. Then it will work again. I donít know if this is related but when the Whaler is parked for a few days the motor will slowly lower to the vertical position. The travel is about 8 inches. Any one have any ideas on what is going on and what I should do?.

A new Johnson is out of the question, though not out of the dreams.

Denny posted 05-03-2002 01:19 AM ET (US)     Profile for Denny  Send Email to Denny     
Ooops! should have put this in the other section.
Denny
Clark Roberts posted 05-03-2002 07:02 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Denny, you need to determine if problem is electrical or hydraulic! When you hit the up/down switch if you hear a click (from under motor hood) then the relays and switch are working. If trim/tilt motor does not run (humming sound) then it's most likely a motor problem. If motor runs and hyd rams do not move then it's a hydraulics problem. Check out the electrical and if ok then here's something to try... raise engine to highest point (you can do this manually if hyd not working by turning the hyd release screw (located on hyd unit... see manual)a turn or two ccw and just lifting up. Put the stay/safety arm in place... check fluid level (this may be the whole problem) and if low fill with automatic trans fluid (ATF) and an oz or two of "automatic transmission fluid conditioner" (from local auto store). Once fluid is topped off, raise and lower the engine several times by hand and then retighten the screw (cw) and using the normal buttons, run up and down half dozen times or so.... hope this helps as those three ram systems are expensive to repair/replace... Happy Whalin'.. clark.. SCN
gunnelgrabber posted 05-03-2002 09:44 AM ET (US)     Profile for gunnelgrabber  Send Email to gunnelgrabber     
to: clark roberts
that sounds like something we all could use to sort out the bugs in the t-n-t?
you being a Mercury man i wondered if us "other" brand people could go with that suggestion also?? thanks a lot....lm
Denny posted 05-03-2002 10:34 AM ET (US)     Profile for Denny  Send Email to Denny     
Thanks for the input. I'll give it a try.

Denny

Clark Roberts posted 05-03-2002 03:54 PM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
LM, should work on any brand that uses ATF! Usually will cure a slow leak-down permanently... the conditioner swells the seals and o-rings and makes them more plyable! Happy Whalin'... Clark.. SCN
whaleryo posted 05-03-2002 04:32 PM ET (US)     Profile for whaleryo  Send Email to whaleryo     
Clark,

Don't know whether or not my '87 70h Yamaha uses ATF (manual says Yamalube), but I'm also going to try the conditioner. Mine is definately a seal problem...the electric motor works and if I refill and bleed the system it will work a few times. Can't hurt anything I guess because I'm not going to get it fixed if this doesn't work.

Thanks for the tip.

WhalerYo

Taylor posted 05-03-2002 06:43 PM ET (US)     Profile for Taylor  Send Email to Taylor     
I don't think T&T's are too picky about what's in them. At least in my Mercury aftermarket manual they said "use atf, unless you can't find any, then use (?) and then swich back to ATF when you find civilization again". So if the Yamaha has anything that looks red, that's probably close enough to justify the atf conditioner approach.

Also, Denny, I hope you get this worked out, I had to get a new pump assembly for my '88 Merc 100hp that cost me *way* too much.

Denny posted 05-03-2002 10:43 PM ET (US)     Profile for Denny  Send Email to Denny     
This for the input. I'm going to play with it this weekend and see what happens. Thanks for all the info guys!

Denny

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