MR outdrive

[Dmacky]

Hey everyone I am new here and been liking what I read on threads and have been very helpful. So My question is on my 72 MR outdrive, the bell housing is held on with 2 stainless nails in hinge pins which I have been soaking in breakfree for about a week now. Is there a good trick to getting those darn things to come out far enough to grab and pull them out. Tried one with a tapping motion and only bends the nail back over. I do not want to break them off so I am hoping here I may find a way to get the buggers out.

 

[alldodge]

Have you tried driving them out from the back side?

If you have most likely need to apply heat

 

[Dmacky]

Have you tried driving them out from the back side?

If you have most likely need to apply heat

Uhh yea. Very tight area to get anything on either one of them to drive them out. I know you can do it if you can get the gimble ring off but that is no easy chore on an old MR outdrive either.

 

[alldodge]

We could use some @Bondo input on this

 

[Bondo]

Hey everyone I am new here and been liking what I read on threads and have been very helpful. So My question is on my 72 MR outdrive, the bell housing is held on with 2 stainless nails in hinge pins which I have been soaking in breakfree for about a week now. Is there a good trick to getting those darn things to come out far enough to grab and pull them out. Tried one with a tapping motion and only bends the nail back over. I do not want to break them off so I am hoping here I may find a way to get the buggers out.

Ayuh,..... Welcome aboard,.... Do the pins move, at all,..??
Try digging 'em loose with a hose pick, screwdriver, whatever,.... bend 'em, bust 'em, break em out, any way you can,.... you can replace em with a piece of ssteel welding wire later,....

 

[Grub54891]

I usually bend the pin in the back straight, tap it fwd a as much as you can and grab the head with a side cutter and pry them out. A proper stainless cotter pin works to put it back together, there is really not much stress on those pins.

 

[kenny nunez]

I have had to use a torch to get them out. As Grub said pulling them out with diagonal pliers along with tapping the pliers with a hammer will sometime back them out. If you manage to get them out the replacement pins are larger so the ring and the pin will have to be drilled out to the size of the pin. Shearing them off can cause some real headaches.

 

[matt167]

Don’t drill them out. On my big boat, the previous owner tried drilling them and destroyed the housing. didn’t realize it until I was putting it back together. I bought the boat with disassembled gimbal.

 

[Dmacky]

Well after soaking them with breakfree and spraying vinegar in and on them and a lot of heat I broke the back of one off [ on accident] but then was abel to pull it out with vise grips and a cats paw being tapped with a hammer.. seeing They actually come out easier once you loose the resistance of trying to pull the back of the bent nail through the gamble hinge pin.

 

[ROY WILLIAMS]

Well after soaking them with breakfree and spraying vinegar in and on them and a lot of heat I broke the back of one off [ on accident] but then was abel to pull it out with vise grips and a cats paw being tapped with a hammer.. seeing They actually come out easier once you loose the resistance of trying to pull the back of the bent nail through the gamble hinge pin.

THE OUTDRIVE HINGE PINS 2 BOLTS ... STAINLESS STEEL ... THE PROPANE TORCH HEATING IT HOTTER BOLT THEN THE SOCKET IN THE ICE WATER ...
THEN THE SOCKET COLD AND THE BOLT HOT AND THE A TORQUE ...
THE BOLT IS A VERY HOT RED ....

NO HAMMER .... THE THREADS ARE LOCKED UP THE CHEMICALS OF THOSE BOLTS ...

 

[Grub54891]

THE OUTDRIVE HINGE PINS 2 BOLTS ... STAINLESS STEEL ... THE PROPANE TORCH HEATING IT HOTTER BOLT THEN THE SOCKET IN THE ICE WATER ...
THEN THE SOCKET COLD AND THE BOLT HOT AND THE A TORQUE ...
THE BOLT IS A VERY HOT RED ....

NO HAMMER .... THE THREADS ARE LOCKED UP THE CHEMICALS OF THOSE BOLTS ...

A little heat doesn't hurt, not red hot. But in this case the pivot bolts are not threaded. They are held in place with what I call an aluminum "nail".

 

[ROY WILLIAMS]

A little heat doesn't hurt, not red hot. But in this case the pivot bolts are not threaded. They are held in place with what I call an aluminum "nail".

the nail alum of the pivot bolts

MerCruiser 17-38031 Gimbal ring bell housing Hinge Pin MR Pre-Alpha One 1965-77

Item Details This is a stock photo. You will receive a set in similar or better condition. This is the older style Hinge Pins for the bell housing. On all MerCruiser Pre-Alpha One models (120/140/165/898/228/260/470) (Basically Pre-1977) These are threaded with the grease groove. The threads...

www.nlamarine.com

 

[Dmacky]

THE OUTDRIVE HINGE PINS 2 BOLTS ... STAINLESS STEEL ... THE PROPANE TORCH HEATING IT HOTTER BOLT THEN THE SOCKET IN THE ICE WATER ...
THEN THE SOCKET COLD AND THE BOLT HOT AND THE A TORQUE ...
THE BOLT IS A VERY HOT RED ....

NO HAMMER .... THE THREADS ARE LOCKED UP THE CHEMICALS OF THOSE BOLTS ...

Thanks but I am still working on the last stainless steel nail pin locking the hinge pin in place. The actual hinge pin apparently you screw a bolt into the center heat them up and use a slide hammer to pull them out. Remember I am dealing with a 1972 MR version of a outdrive. Not really understanding your post. It's like in short hand and read between the lines. Thanks anyway though for the input.

 

[matt167]

I would try a little heat and something like a very small punch. I was very mad when I saw what the previous owner did to mine trying to get it apart. But when I got a replacement. I was sure to get an Alpha Gen one so that I got threaded pins

 

[Dmacky]

I would try a little heat and something like a very small punch. I was very mad when I saw what the previous owner did to mine trying to get it apart. But when I got a replacement. I was sure to get an Alpha Gen one so that I got threaded pins

Yea I can understand your grief. I was abel to get 2nd one out with heat and pulling it out the back side a tiny bit at a time with needle nose vise grips and small tapps of a hammer. Think I will put stainless cotter puns back in it when time comes