'57 Lark Swivel Bracket frozen?

Mas

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Oct 3, 2006
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Are there any "keepers" that may prevent the pivot shaft of my 35 HP Lark from being removed from the swivel bracket? My motor sat in a 55 gal drum prior to my ownership and does not swivel. I've pumped grease and penetrating oil with no luck. Before I begin using my mallet, are there any "keepers" that need to be removed, or should the post side out when free? I do not see anything that would prevent it from doing so visually or from the manual diagrams.

Mas

57LarkSwivelBracket.jpg
 

1946Zephyr

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Oct 21, 2008
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Re: '57 Lark Swivel Bracket frozen?

There should be a tension screw there with a spring on it. I would take that out completely and spray a bunch of penetrating oil in there. I've worked on a few that were like that. I spent hours with pentrating oil and working them back and forth, till they free up. I wouldn't use a mallet on it. I would hate to see any part of your classic break.:D:D:D
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

I removed the screw & pumped grease grease in the zerk fitting. I sprayed PB blaster down the screw hole and up from the bottom. I've let it soak for a couple of weeks now with no movement.

My thoughts are that I do not want to torque the steering bracket for fear of breaking the casting, but tapping with a mallet upward seemed a better option.

I just wanted to make sure there weren't any clips that I was missing that would prevent vertical movement.

Mas
 

F_R

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Re: '57 Lark Swivel Bracket frozen?

I removed the screw & pumped grease grease in the zerk fitting. I sprayed PB blaster down the screw hole and up from the bottom. I've let it soak for a couple of weeks now with no movement.

My thoughts are that I do not want to torque the steering bracket for fear of breaking the casting, but tapping with a mallet upward seemed a better option.

I just wanted to make sure there weren't any clips that I was missing that would prevent vertical movement.

Mas

I've removed lots of those things. Salt water, y'know. Beating on it probably won't help-too much mass to move.

You already have it torn apart too much to do it the way I do them. But here goes:

You need something to heavy clamp the stern brackets to, like a boat. Lock the tilt lock down. Then you need something to lift several hundred pounds, like a hoist. Then you need to attach your hoist to the steering bracket near the pivot, like with a sling. Then apply a bunch of lifting force with the hoist while man-handling the steering bracket back and forth. It will be tough at first but get easier as it comes up a bit.

Once you get it out, you will find a "wooden" liner inside the swivel bracket, at the top. There is a pin, similar to a rivet, holding it in place. Tap the pin out from the outside with a hammer and punch. Now, notice that the liner is split along one side. Drive something like a knife blade in between the liner and bracket, beside the split line. That will collapse the liner inward till the edges overlap along the split. Once overlapped, it will lift out easy. Remove the co-pilot spacer and plate. Then scrape all that crap out that was between the liner and bracket. That crap is what was making it tight. Make sure the grease fitting is open, then grease everything liberally with some good waterproof marine grease, and reassemble. If you didn't break the liner, you shouldn't need any new parts.
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

...Once you get it out, you will find a "wooden" liner inside the swivel bracket, at the top.

Seriously...wooden? It sounds like the liner could break very easily. Nor does it sound like it would be an easy part to replace!?

Thanks FR...I've give it a try.

mas
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

Also, my Rd-18 parts motor has the same liner...correct? The Rd-18's swivel is free, so that can be an option for me if identical internally.

Mas
 

tmcalavy

Rear Admiral
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Re: '57 Lark Swivel Bracket frozen?

The RD swivel should be a match. Never encountered one stuck that tight...good luck.
 

F_R

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Re: '57 Lark Swivel Bracket frozen?

Well, actually it is some sort of man-made material that resembles wood.
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

Well, actually it is some sort of man-made material that resembles wood.

Good...I didn't want to worry about termites! :)

Mas
 

1946Zephyr

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Re: '57 Lark Swivel Bracket frozen?

I had an ol' boy drop off an Mercury Mark 55 one time that was stuck this bad and to start working it free. I some how put a cheater bar on the transome clamp to rock it back and forth and it took me several hours.

What apparently has happened to your motor, corrosion has set in and swelled it up inside there and made the swivel tube very tight. A common issue. This happens a lot with tiller handle linkages and makes them hard to twist.:eek:
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

Well, I'll try to get to it tomorrow and see if I can get it free. I'll let you know!

Mas
 

Mas

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Re: '57 Lark Swivel Bracket frozen?

Everyone can rest easy now! I was able to free up the swivel bracket with some coercion with a mallet. I was able to remove the steering assembly from the post and mount the swivel bracket head in my wood vise. After many whacks with a mallet to the bottom end of the post (and one to my thumb) the post finally began to budge. I was also able to salvage both liners. The bottom one came out easily. The upper one took some effort and got a little bit buggered up...but totally usable.

I cleaned up all the corrosion (F_R nailed it) from behind the liner, and she now swivels like any man's dream.

Thanks guys for the help. Now the next project...transom bracket thumb screws...frozen and really ugly...just corrosion nubs where the pads used to be!

Mas
 
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