Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 17 of 17
  1. #1

    Default Force outboard power trim and tilt

    I have a 85 hp power trim and tilt motor that i just had fixed but now i do not know what kind of fluid it takes. Any help would be greatly appreciated.. Shuld i fill it with the motor down or up is there a way to bleed these? The manual says i should use motor oil but others say to use power trim and tilt oil.. Help please

  2. #2

    Default Re: Force outboard power trim and tilt

    i used 10W40 and i have the same trim. depending on what type of trim it is some of them you have to use hydraulic oil. what is the serial number of the motor??????

  3. #3
    Captain
    Join Date
    Mar 2006
    Location
    Cape Coral, FL
    Posts
    3,320

    Default Re: Force outboard power trim and tilt

    Thinner fluid reduces the risk of hydraulic pressure lock and thicker fluid reduces the risk of engine bounce. Pressure lock is a bigger problem in cold weather than hot and engine bounce is a bigger problem on 150HP than 85.

    30w non detergent motor oil is the universal answer for Force. It shouldn't bounce on any size engine.

    Hydraulic oil is better for the seals but may bounce. AW32 is hydraulic oil formulated to work as well in cold as hot weather. Tractor fluid is not as good in your tranny as ATF and not as good in your pumps as hydraulic oil. But it can do both good enough from a single reservoir.

    do not use multi-weight oil. it has detergents. detergents will cut lifespan of your orings in half - or less.

    on an 85hp? I would go with hydraulic oil.

  4. #4

    Default Re: Force outboard power trim and tilt

    So i fi had already added power trim and tilt oil to it how do i flush it out or ist ok to mix the remaining oil in the line with motor oil?

  5. #5
    Petty Officer 1st Class
    Join Date
    May 2010
    Location
    TomsRiver New Jersey
    Posts
    302

    Default Re: Force outboard power trim and tilt

    the guys at west marine told me to put in quicksilver power tilt and trim oil and thats what i did... And i just replaced the oring in my rams and the motor and valvebody from rritt and my system THANK God is working flawelessly ... Hope this isnt the wrong fluid in mine.. RRITT is this going to hurt anything

  6. #6

    Default Re: Force outboard power trim and tilt

    My f1st boat

    i used the same oil but now i am unsure of it myself i cannot get the motor to stayup with the pistons or i dont know the correct procedure to starting up my hydraulic unit for the first time do i have to start with the motor up and no pressure in the hyd, unit or down?

  7. #7
    Petty Officer 1st Class
    Join Date
    May 2010
    Location
    TomsRiver New Jersey
    Posts
    302

    Default Re: Force outboard power trim and tilt

    the pump itself is self bleeding.. just fill the resevoir with the engine down until the fluid starts to come out.. Run the pump motor up and put more fluid in the motor run it down see if it takes anymore.., like i said its self bleeding put the plug in and just make a few cycles up and down till the motor operated smoothly up and down.. Ive had this powertrim tilt oil in my unit for a few weeks.. its been fine... if your motors not staying up after all the air is bleed out you probably have another problem with the system I replaced the motor and valvebody as an assembly and bought the seal rebuild kit for the rams and trim pump.. not hard to do feel free to pm me or email me for any advise if you have to get into the rebuild..

  8. #8
    Captain
    Join Date
    Mar 2006
    Location
    Cape Coral, FL
    Posts
    3,320

    Default Re: Force outboard power trim and tilt

    Quote Originally Posted by my1stboat1 View Post
    the guys at west marine told me to put in quicksilver power tilt and trim oil and thats what i did... And i just replaced the oring in my rams and the motor and valvebody from rritt and my system THANK God is working flawelessly ... Hope this isnt the wrong fluid in mine.. RRITT is this going to hurt anything
    It takes about 15 years for ATF to break down orings on a big engine.

  9. #9
    Petty Officer 1st Class
    Join Date
    May 2010
    Location
    TomsRiver New Jersey
    Posts
    302

    Default Re: Force outboard power trim and tilt

    wasnt red in color, it was like oil color slight gray

  10. #10

    Default Re: Force outboard power trim and tilt

    I put in the oil and got the motor to go up a little and it wont go anymore the motor keeps turning but the hydraulics wont push what other trick can i use to get it going or would i have to rebuild my cylinders i have already gotten a oring rebuildkit for it shall i use it or can it be something else?

  11. #11
    Captain
    Join Date
    Mar 2006
    Location
    Cape Coral, FL
    Posts
    3,320

    Default Re: Force outboard power trim and tilt

    your symptoms sound like
    1) valve body - if original fluid was tan and no water in oil
    2) trim piston ring - if original fluid was red
    3) tilt bypass valve - if there was water in oil

    rebuilding the rams isn't a bad way to start if your boat is freshwater. It's quick and easy like doing a brake caliper and it eliminates #2 and #3 from the list of suspects. However, if you have a good manual it should describe how to test your hydraulics and determine exactly what is going on.

  12. #12

    Default Re: Force outboard power trim and tilt

    That is what i will do then.. This is also my first boat so i want to be able to do as much as i can myself thank u for al your advice, what tools do i need to redo the seals on the hydraulic system, hopefully this works thank u again

  13. #13

    Default Re: Force outboard power trim and tilt

    so i rebuilt the trim and tilt cylinders through a rebuild kit that i bought and still i have trouble getting the pisytons to go up i am starting to lean towards the valve body being bad but i also i have a small leak from the seat of the pump i need to replace the o-rings .. does anyone here know of wehere i can purchase a valve body rebuild kit for my trim? or do i have to buy a whole new unit? when i am filling the resertvoir does the motor need to manually be lifted up or should it be in the down positionto where the cylinders are not extended? what are teh proper procedures?

  14. #14
    Captain
    Join Date
    Mar 2006
    Location
    Cape Coral, FL
    Posts
    3,320

    Default Re: Force outboard power trim and tilt

    and what year was that engine?

  15. #15

    Default Re: Force outboard power trim and tilt

    1987 force 85hp

  16. #16
    Captain
    Join Date
    Mar 2006
    Location
    Cape Coral, FL
    Posts
    3,320

    Default Re: Force outboard power trim and tilt

    on 1987 how and when you fill is not critical. You can fill at any position and even while lifting. The reservoir is generous in size so i prefer to fill with engine halfway up.

    No kits on vavle body although some on this board have used briggs & stratton carb kits. The valve body can be a bit of Pandora's box. IMO, it's not user serviceable.

    On an 85hp i would go with hydraulic oil all the way. Good old iso32. Just like the stuff they would put in a $10million factory robot.

  17. #17
    Fleet Admiral jerryjerry05's Avatar
    Join Date
    May 2008
    Location
    Sebastian Fl.
    Posts
    8,926

    Default Re: Force outboard power trim and tilt

    My manual says that filling should be in the down position.The reason being the resivoir is at its fullest.Too much oil and it will be pushed up into the electric motor.J

Similar Threads

  1. Force 120 power tilt/trim
    By sparkey47-123 in forum Force & Chrysler Outboards
    Replies: 0
    Last Post: August 25th, 2010, 05:47 PM
  2. Mercury Outboard Power Trim and Tilt
    By shoots7066 in forum Mercury & Mariner Outboards
    Replies: 6
    Last Post: May 13th, 2010, 12:03 PM
  3. Force power tilt/trim tilt cylinder leaking
    By basj8yw in forum Force & Chrysler Outboards
    Replies: 6
    Last Post: January 26th, 2010, 08:34 AM
  4. Force outboard trim/tilt
    By cyazel in forum Force & Chrysler Outboards
    Replies: 26
    Last Post: September 5th, 2003, 04:25 AM
  5. power tilt on my 85hp force outboard motor
    By rambo in forum Force & Chrysler Outboards
    Replies: 2
    Last Post: July 15th, 2002, 10:15 AM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic