Tilt and Trim

Discussion in 'Gateway Catfishing Club' started by Mr Okie, Sep 27, 2009.

  1. Mr Okie

    Mr Okie New Member

    Messages:
    940
    State:
    Okla/Texas
    Hey Guys
    I need a little advice..from the local motor experts.. It appears that the tilt and trim on my 150 yammie is having a little problem. It acts like it is having a problem when you raise the motor way up high. It seems like it gets real sluggish and starts jerking a little. I was wondering if it might be a little low on Hyd fluid but really have know idea how to check it or to add any if it needs it. I greased the motor good today and it seems to work better but I still think it might not be working right.

    Help!!!Help!!!!
     
  2. BajaCoop

    BajaCoop Well-Known Member

    Messages:
    3,199
    State:
    Poplar Bluff,MO
    you should be able to find where the fill cap is from your manual.
     

  3. Mr Okie

    Mr Okie New Member

    Messages:
    940
    State:
    Okla/Texas
    Whats that....
     
  4. BajaCoop

    BajaCoop Well-Known Member

    Messages:
    3,199
    State:
    Poplar Bluff,MO
    that is the thing that you get out and read after you break it from not knowing what to do.
     
  5. Mr Okie

    Mr Okie New Member

    Messages:
    940
    State:
    Okla/Texas
    Oh that's what it is for....I think mine is in Oklahoma..maybe.. :wink: :wink:
     
  6. BajaCoop

    BajaCoop Well-Known Member

    Messages:
    3,199
    State:
    Poplar Bluff,MO
    I looked up an online manual for a yamaha motor of your size and it does not give any directions or specs about tilt and trim fluid. Just says if it doesn't work then you should take it to a dealer and they will fix it.

    Kinda defeats the purpose of a service manual doesn't it.
     
  7. BEHITJ

    BEHITJ New Member

    Messages:
    1,014
    State:
    Wentzville
    There is a fill cap on the back of the cylinder maybe yellow. But I can't remember if you are supposed to check it with it trimmed all the way up or all the way down so it's not under pressure.
     
  8. BajaCoop

    BajaCoop Well-Known Member

    Messages:
    3,199
    State:
    Poplar Bluff,MO
    something from another site

    Filling: To properly check the fill, the trim/tilt rams must be extended. Raise OB all the way up (if you can't via the trim motor, then back off the manual release valve and with extra help, tilt/raise the OB all the way up and set it on its mooring/full raise lock, then re-tighten the release valve).

    Tilt reservoirs are easier and best to fill IMHO when the boat is on a trailer, as you can lower the tongue all the way to the ground, as you want the tilt/trim reservoir as straight up & down as you can get it. This procedure is also best done with a helper to assist you, as they will keep their finger on the t/t UP button on the OB cowl, when needed.

    Trim the OB all the way up and engage the full-up tilt support (or use a block ... you do NOT want an OB to fall on any bodypart [​IMG] !). Slowly open the t/t reservoir cap (allowing air to escape) and insert the trim fluid tube/nozzle. I use a small long/slender nozzle on the end of the recommended trim fluid container to help keep it in there.

    Now this is where your assistant comes in. Have them press the t/t UP button as you put in ALL the fluid it will take. Keep pressing UP while the OB goes all the way up (off its supports), you will hear the t/t motor hit the bypass valve (the motor sound will change) and until the t/t reservoir won't take any more fluid and it starts to drip/gush out. Mind you, your helper's finger is still ON the UP button ... and while their finger is still pressing the UP button, quickly put the trim reservoir cap back on. All done!

    FYI: the concept behind [red]"holding the UP button pressed while filling"[/red] allows the trim motor to suck in all of the fluid it can via the hydraulic system. Doing in this manner, you should not have to top off the reservoir again, hopefully for a loooooong time.

    Bleeding: OB tilt/trim units are "self-bleeding" and you should always perform these "purge cycles" to follow even if you don't need to add any more fluid. To purge/check, remove the tilt lock (if engaged) and cycle the OB down by "jogging" it down, in 2-3 seconds runs. Then rest the motor a few seconds (akin to NOT cranking on a starter motor continuously), then cycle it UP all the way in one long blast.

    Rest/pause again ... 10 seconds or more ... then repeat that complete cycle a few more times to ensure that it has bled all the air out of the t/t system. When bled of all air, you won't hear bubbling or gurgling as the OB starts its up or down cycle ... you should just hear a smooth start of the rams in motion.
     
    Last edited: Sep 27, 2009
  9. catin38

    catin38 New Member

    Messages:
    272
    State:
    alabama
    hi,
    im by no means an expert. it is possible you have some sort of air lock in the tilt/trimdo you have a bleed screw on the tilt/trim unit..if so try bleeding it and check fluid level and see if that helps.
     
  10. catin38

    catin38 New Member

    Messages:
    272
    State:
    alabama
    i see where you said it was self bleeding.still sounds like to me it needs it. try draining the fluid and refilling..
     
  11. Rollinunknown

    Rollinunknown New Member Supporting Member

    Messages:
    2,286
    State:
    Missouri
    I just wanna add here man .. i know it sounds corny but ware safety Goggle's while doing this...Hydraulic fluid when it comes in contact with your eye it WIIL not CAN but WILL separate the retina and you will lose your eye site.. I have a friend how lost his left eye rebuilding pumps.

    Might even be worth taking it to a shop if your not 100% sure.Im sure they would take the time to show you were to fill it up ..(maybe give the guy 5 bucks or something... he might even do it for you.)