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Tilt/Trim Valve Body Check Valve removal

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  • Tilt/Trim Valve Body Check Valve removal

    I have searched the forums and I see most people use compressed air thru the 2 small holes in the valve body to blow out the check valves after removing the circlips. That is not working for me. Can I get access to those by taking the pump apart?

  • #2
    You can take the pump section apart but I doubt it'll give you access to the valves. Not really sure since you never mentioned what year or HP is the motor and T&T in question. By all means take it apart and then let us know if you can get access to the check valves. This will be very helpful for members with the same problem.

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    • #3
      Sorry bout that. It is on a pontoon with a 1987 Force 85 engine. I would prefer some other way because I understand there are lots of little pieces if I do. i.e. springs, check balls, tiny washers, etc. And I certainly don't want to take it apart unless it will give me access to the valves.
      Last edited by AFFTAXI; September 16th, 2017, 01:53 AM.

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      • #4
        Taking the pump apart, it gas springs and check balls in there?
        Not easy to reassemble..

        ​If you keep playing with it, it should eventually come apart.

        ​Been in salt water? then it will be a lot harder.

        Only work on one end.
        Try pushing it IN just a little bit.
        Then tap the body on a piece of soft wood(pine)
        Trying to move it back to where it was.
        Then try the other end, that might come apart easier.

        It might take a couple of hours to get apart.

        Or just buy a replacement.
        The cheapest ones are just that.
        ​Lots of times they don't work right out of the box.

        Let us know how it progresses???


        Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
        ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

        In Scenic , Beautiful San Sebastian by the sea Florida

        88 Bayliner 21CC 2001 Mercury 225 HP EFI

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        • #5
          I wonder if there is any way to use the hydraulic force from the pump itself? Maybe plug off the output ports and remove the circlip on one side while holding a rag over the check valve and pulsing the motor? Would that be a possibility?

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          • #6
            Yes.
            ​Just be careful, lots of pressure.


            Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
            ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

            In Scenic , Beautiful San Sebastian by the sea Florida

            88 Bayliner 21CC 2001 Mercury 225 HP EFI

            Comment


            • #7
              I guess that will only work for one side though? Anybody know if the shuttle will come out with valve so I could push the other side out with something?

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              • #8
                Or maybe, I could take out both circlips and then put a large screw-in hose clamp around the ports so the valves can't blow all the way out? That would avoid the hi pressure problem and be safer than a rag. Sound feasible?

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                • #9
                  Once the one comes out, the other can be pushed through.


                  Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
                  ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

                  In Scenic , Beautiful San Sebastian by the sea Florida

                  88 Bayliner 21CC 2001 Mercury 225 HP EFI

                  Comment


                  • #10
                    you just need a stronger compressor - i borrowed my neighbors and it shot right out. Like Jerry said once you get one side just take the shuttle valve out and use a wooden dowl to push the other side out
                    2003 Malibu Sunsetter LXI, Acme 525, Radar P6 ski

                    (I still like to help with Force outboards !)

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                    • #11
                      My proposed setup. This should take them right out hydraulically by reassembling to the pump or with good air pressure to prevent losing any parts. I'll find out in the morning and post back my results.
                      Last edited by AFFTAXI; September 17th, 2017, 09:50 PM.

                      Comment


                      • #12
                        OK. You're setup is looking good from the pics. You have all the hyd connections plugged. Now turn the VB over and you should see small holes as shown in the pics below. Using a rubber tip air nozzle and using about 50 psi of compressed air, pressed and blow into one of the small holes while covering the rest of the remaining holes with your other fingers. This should just be a quick burst for a second.

                        Note make sure you only removed one circ clip and using a rag to catch all the parts that will come out. If the spool valve (which houses the small check valve and spring) gets stuck and would not come out all the way. Push it back in with a slight tap using a large screw driver. Before trying again, clean the lip and surround area on the hole until bare metal. Try blowing again.

                        If it only comes out a little bit, put a drop of oil and push it back in again and then blow it out again. And yes, it will eventually come out. If it's too stubborn switch to the other spool valve and keep trying. And yes, as soon as you get one side out, all you need to remove the other side is to push it out with a wood dowel or similar tool except metal.

                        And yes, as soon as one spool valve gets out the shuttle valve goes out with it.

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                        • #13
                          Well guys, I did not try this with the air, but I did put the VB back on the pump, tapped it once or twice, they both came right on out to the hose clamp stop. Might be helpful to someone some day. Thanks everyone for all the great responses.

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                          • #14
                            God for you!!
                            ​Next time, I'll clamp it.


                            Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
                            ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

                            In Scenic , Beautiful San Sebastian by the sea Florida

                            88 Bayliner 21CC 2001 Mercury 225 HP EFI

                            Comment


                            • #15
                              Sign up today
                              One of my Stainless Circlips went flying to an alternate universe while I was taking it off. Am I in trouble?

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