• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.

Announcement

Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone else’s topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when it’s posted at the end of someone else’s topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

Perma Lube Gimbal Bearing?!?!

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts


  • Perma Lube Gimbal Bearing?!?!

    I just opened up two new merc Bravo transom kits [kit # 30-803100T1] to have a look at everything.

    Much to my surprise... both gimbal bearings are a "perma lube" bearing, with no hole in the outer race so it can be greased. In addition, the kit came with instructions and a plug to thread into the gimble housing, after the grease fitting is removed...

    Why the ---- would Merc do this?!?! Doesn't make any sence to me.
    1998 Monterey 322 "Artemus"
    Twin Merc 5.7
    Bravo 3 Drives
    Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!


  • #2
    Re: Perma Lube Gimbal Bearing?!?!

    Howdy,


    Well, I did a little search and found the following at http://www.sterndrives.com/precisionparts/421.html

    Some cross bearings have no zirt fittings. That is because they are Perma-Lube
    cross bearings which do not requires greasing. The rubber seals are usually orange.
    I also found the following from a Mercruiser ad....
    • Drive Lube Monitor – Alarm warns if drive lube is low. Engine mounting allows easy inspection and fill without the cost to pull a boat from the water.
    • Permalube ® U-Joint – Virtually No Maintenance Required
    • Maintenance Free Hinge Pins – No added cost to pull a boat from the water
    • Greaseable Drive Coupler – No added cost to pull a boat from the water
    • New permanently lubricated gimbal bearing does not require maintenance
    My guess is that it is a permanently lubricated bearing.


    regards,


    Rick
    ----------------------------------------------------------------------------------
    I use xxx oil and have never had a problem........
    This post was created with OpenSuSE x64 Linux!

    Comment



    • #3
      Re: Perma Lube Gimbal Bearing?!?!

      I guess what is bothering me, is that I know eventually that bearing grease will dry out, and damage the bearing as a result...

      Having a grease fitting, allows fresh grease to be pumped in each year, as part of regular maintenance to prevent that from happening.
      1998 Monterey 322 "Artemus"
      Twin Merc 5.7
      Bravo 3 Drives
      Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!

      Comment



      • #4
        Re: Perma Lube Gimbal Bearing?!?!

        Well,


        Think of it like a front wheel bearing on a front wheel drive car or 4x4 GM independent suspension truck.

        I have a 1994 3/4T 4x4 GMC Suburban. It has permanently lubricated front wheel bearings. It's now 16 years old and has 185,000 miles on it and I'm not really worried about it.

        185,000 miles on my roughly 30" dia tires is about 125 MILLION revolutions so far......(carrying about 2000lbs weight)


        A marine engine turning 3000 RPM (180,000 revolutions per hour) for 500 hours would turn about 90 million revolutions AND doesn't carry anywhere near that side load.


        I don't worry too much about not being able to grease the front wheel bearings on my Sub......nor would I worry about a non-grease-able gimbal bearing..........

        If it gets noisy after 500 hrs, replace it!



        Cheers,


        Rick
        ----------------------------------------------------------------------------------
        I use xxx oil and have never had a problem........
        This post was created with OpenSuSE x64 Linux!

        Comment



        • #5
          Re: Perma Lube Gimbal Bearing?!?!

          How often is the drive supposed to be removed for inspection?
          From Mercruiser:
          Anyone who uses a service procedure and/or tool, which is not recommended by the manufacturer, first must completely satisfy himself that neither his nor the product’s safety will be endangered by the service procedure selected.

          Comment



          • #6
            Re: Perma Lube Gimbal Bearing?!?!

            Mercury suggests checking the alignment every 100hrs or once a year in my Bravo maintenance schedule....

            You have to pull the drive to do that and the alignment tool is pushed thru the gimbal bearing at that time.....So I guess you could check the gimbal bearing at that time too....
            ----------------------------------------------------------------------------------
            I use xxx oil and have never had a problem........
            This post was created with OpenSuSE x64 Linux!

            Comment



            • #7
              Re: Perma Lube Gimbal Bearing?!?!

              Originally posted by HT32BSX115 View Post
              Well,


              Think of it like a front wheel bearing on a front wheel drive car or 4x4 GM independent suspension truck.

              I have a 1994 3/4T 4x4 GMC Suburban. It has permanently lubricated front wheel bearings. It's now 16 years old and has 185,000 miles on it and I'm not really worried about it.

              185,000 miles on my roughly 30" dia tires is about 125 MILLION revolutions so far......(carrying about 2000lbs weight)


              A marine engine turning 3000 RPM (180,000 revolutions per hour) for 500 hours would turn about 90 million revolutions AND doesn't carry anywhere near that side load.


              I don't worry too much about not being able to grease the front wheel bearings on my Sub......nor would I worry about a non-grease-able gimbal bearing..........

              If it gets noisy after 500 hrs, replace it!



              Cheers,


              Rick
              I have had to replace several sealed wheel bearings on a # of vehicles I have owned. They don't last forever.

              Call me old fashioned... I like having grease fittings.
              1998 Monterey 322 "Artemus"
              Twin Merc 5.7
              Bravo 3 Drives
              Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!

              Comment



              • #8
                Re: Perma Lube Gimbal Bearing?!?!

                Lots of things have changed over time many just because they are cheaper to build and easier to assemble (alpha gen II) not necessarily better.

                My guess is takes less time to slap in a gimbal when you don't have to line up the lube hole.

                As for the perm U-joints, well a majority of boat owners just don't bother to pull the drive until something is wrong. Which is good for people who make a living by repairing them.

                Now that said, I am probably going to get flak over the gen II thing, but hey I have taken lots of it on here over my stringer.
                When will people learn that impellers require regular
                replacement and are not drive it till it pukes items?

                1984 Regal Medallion 195
                3.8 V-6 with the dreaded
                OMC Stringer Drive.
                2003 Avalanche w/Hypertech

                If it ain't fixable - don't break it!

                Comment



                • #9
                  Re: Perma Lube Gimbal Bearing?!?!

                  i think manufacturer would rather you replaced his bearing rather someone maintaining his bearing-everybody (industry) makes money if bearing is maintained (greased) but manufacturer, if you replace bearing everybody-including Manufacturer make money-as we are a throw away society-that is limited by grease fittings and proper maintenance, and this goes for anything that has bearings not just boats, it boils down to money, thanks chris
                  1975 chaparral L6 & MC-1

                  Comment



                  • #10
                    Re: Perma Lube Gimbal Bearing?!?!

                    Call me old fashioned... I like having grease fittings.
                    Ayuh,... Same Here.... You can always install 1 of the Greasable gimbel bearings,.. They're still available...
                    Any Grease is Better,..... Than No Grease at All.......

                    Comment



                    • #11
                      Re: Perma Lube Gimbal Bearing?!?!

                      cr2k hit it right on the money,Most of the slip customers here don't even read the owners manuel !!!
                      If you can read this thank a teacher.If you can read it in english THANK A VETERAN

                      Comment



                      • #12
                        Re: Perma Lube Gimbal Bearing?!?!

                        Originally posted by Bond-o View Post
                        Ayuh,... Same Here.... You can always install 1 of the Greasable gimbel bearings,.. They're still available...
                        When comparing the new bearings with an old one with I have, the only difference appears to be the hole in the outer race.

                        Has anyone carefully drilled a hole in one of the new ones?
                        1998 Monterey 322 "Artemus"
                        Twin Merc 5.7
                        Bravo 3 Drives
                        Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!

                        Comment



                        • #13
                          Re: Perma Lube Gimbal Bearing?!?!

                          Well, I just answered my own question...

                          Check out the picture of the new bearing, next to an old one.

                          1998 Monterey 322 "Artemus"
                          Twin Merc 5.7
                          Bravo 3 Drives
                          Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!

                          Comment



                          • #14
                            Re: Perma Lube Gimbal Bearing?!?!

                            Ones sealed, the other isn't.
                            Don S.

                            sigpic

                            Please, no PM's (Private Messages) regarding boat/engine problems.
                            That is what the forums are for.
                            Only forum/moderator issues will be answered in PM's.

                            Comment



                            • #15
                              Sign up today
                              Re: Perma Lube Gimbal Bearing?!?!

                              Exactly... and cannot be modified.
                              1998 Monterey 322 "Artemus"
                              Twin Merc 5.7
                              Bravo 3 Drives
                              Boating from Midland Ontario on Georgian Bay, the best fresh water boating in the world!

                              Comment


                              Working...
                              X