D2 Trunnion

Outbackrider

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I picked up a '56 D2 a few months ago and am trying to assess the machine, one step at a time, it'll be a work in process, but I need to figure a plan of attack.

I plan to complete a restoration to get it running and operational for home owner use...it was a worker during
its early life, ridden hard, put away wet. This might seem a bit out of order, but I am putting my plan together and this is one of those items that may or may not need attention.

I don't have any real experience with these machines, but through pictures, know that this trunnion setup just isn't right, shouldn't there be bolts that can be removed to release the push arm.

I suspect someone welded this thing due to it being worn out....I plan that I will eventually have to replace the steering clutches as one former member pointed out that they they look to be at the end of their adjustment. I'm not sure how this goes together. Both sides look like this.

Any thoughts on this? Should I just leave well enough alone and not mess with it...it seems easier to work on a machine that has the full track and blade removed.

Thanks for your input.
Outbackrider

[attachment=39564]Blade Trunion.jpg[/attachment]

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Sat, Dec 31, 2016 11:29 AM

STEPHEN

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Yes that is buggered. There should be a flanged pin there with 4 holes, two of them tapped for forcing screws.

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Sat, Dec 31, 2016 12:44 PM

Cysco

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Reply to STEPHEN:

Yes that is buggered. There should be a flanged pin there with 4 holes, two of them tapped for forcing screws.

Maybe these pictures will help. There is also bushing in there. I had new ones made.
Have a good day....Bill
Attachment

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Sat, Dec 31, 2016 9:24 PM

Outbackrider

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Reply to Cysco:

Maybe these pictures will help. There is also bushing in there. I had new ones made.
Have a good day....Bill

[quote="Cysco"]Maybe these pictures will help. There is also bushing in there. I had new ones made.
Have a good day....Bill[/quote]

Bill Thanks for the photos. I'm still trying to figure out why they laid all of that weld on there, I can't tell just what can of worms I would be opening if I try grinding down all that weld to try to fix it right.

Do you know the model of your blade, is it a Cat blade?

Thanks again for the reply.

outbackrider

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Sun, Jan 1, 2017 10:54 AM

STEPHEN

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Reply to Outbackrider:

[quote="Cysco"]Maybe these pictures will help. There is also bushing in there. I had new ones made.
Have a good day....Bill[/quote]

Bill Thanks for the photos. I'm still trying to figure out why they laid all of that weld on there, I can't tell just what can of worms I would be opening if I try grinding down all that weld to try to fix it right.

Do you know the model of your blade, is it a Cat blade?

Thanks again for the reply.

outbackrider

In my experience the main problem is the under designed pin flange. The usual thing is for the flange to get ruined trying to extract a rusty pin. Next, the remains of the pin are beat back in and welded shut.

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Sun, Jan 1, 2017 11:48 AM

Cysco

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Reply to STEPHEN:

In my experience the main problem is the under designed pin flange. The usual thing is for the flange to get ruined trying to extract a rusty pin. Next, the remains of the pin are beat back in and welded shut.

It is a Cat 2A blade.
Stephen....fortunately for me the pins were in good shape and grease was applied. The only thing I had to do was drill, tap and install Helicoils for the bolts to hold the pin in. I have had no issues since fixing ......so far.
Bill

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Sun, Jan 1, 2017 6:39 PM

Gregness

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Reply to Cysco:

It is a Cat 2A blade.
Stephen....fortunately for me the pins were in good shape and grease was applied. The only thing I had to do was drill, tap and install Helicoils for the bolts to hold the pin in. I have had no issues since fixing ......so far.
Bill

When I got my Grampa's the pin on one side was held in place by a piece of rebar welded over it, as the bolt holes were all buggered. The other side was also mess. I had to basically build a new pin on one side and rethreaded the other.

BTW that is one slick-looking D2.

G

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Mon, Jan 2, 2017 9:16 AM

Outbackrider

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Reply to Gregness:

When I got my Grampa's the pin on one side was held in place by a piece of rebar welded over it, as the bolt holes were all buggered. The other side was also mess. I had to basically build a new pin on one side and rethreaded the other.

BTW that is one slick-looking D2.

G

Thanks for the replies. I hadn't thought of the helicoil idea.
I'm not sure what the small diagonal pins is in my photo, looks like an old bolt was welded in to
hold the bolt in. Both sides have the small pins in them.

obr

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Tue, Jan 3, 2017 1:01 AM

STEPHEN

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Reply to Cysco:

It is a Cat 2A blade.
Stephen....fortunately for me the pins were in good shape and grease was applied. The only thing I had to do was drill, tap and install Helicoils for the bolts to hold the pin in. I have had no issues since fixing ......so far.
Bill

[quote="Cysco"]It is a Cat 2A blade.
Stephen....fortunately for me the pins were in good shape and grease was applied. The only thing I had to do was drill, tap and install Helicoils for the bolts to hold the pin in. I have had no issues since fixing ......so far.
Bill[/quote]

Bill, grease sure goes a long way for getting these back apart. I am in favor of anti seize as well.
I have removed blades, c frame and cylinder supports from a number of 2S and 2A blades, corrosion is the common factor in my area. Those pins can grow together until dynamite is needed, also the bolts that hold the supports to the track frame get the special treatment (beating will continue until morale improves) .

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Tue, Jan 3, 2017 2:21 AM

dpendzic

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Reply to STEPHEN:

[quote="Cysco"]It is a Cat 2A blade.
Stephen....fortunately for me the pins were in good shape and grease was applied. The only thing I had to do was drill, tap and install Helicoils for the bolts to hold the pin in. I have had no issues since fixing ......so far.
Bill[/quote]

Bill, grease sure goes a long way for getting these back apart. I am in favor of anti seize as well.
I have removed blades, c frame and cylinder supports from a number of 2S and 2A blades, corrosion is the common factor in my area. Those pins can grow together until dynamite is needed, also the bolts that hold the supports to the track frame get the special treatment (beating will continue until morale improves) .

I had to drill out the thread holes to a larger size and tap on mine[attachment=39608]ibm 242.jpg[/attachment]

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Tue, Jan 3, 2017 4:37 AM

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