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D2 2S blade mount ram trunnions - repair?

D2 2S blade mount ram trunnions - repair?

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neil
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Hi all,
I dropped the 2S blade mounts from my 5U into Caledonia Diesel today to get the pin bores line-bored back to size and new threads installed. I noticed that the trunnions that the hydraulic cylinder mounts on to are very worn. They work fine of course but there's a 1/4 of slop. Me being me, I'm wondering since I have the mounts in the shop, are those trunnions (called pin in the parts catalog) available from Cat or elsewhere? It'd be nice to get them back to spec and get rid of all that slop. The part # from the Form 30638 is 6F6824. One per mount. I'm checking with Dana but in case he plays out, wondered if there are any other sources. I guess I can always cut them out, get them built back up and turned down and reinstall.__PRESENT
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Tue, Aug 17, 2021 6:58 AM
mog5858
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Well I not sure what’s your asking. Trunnions as I know them are as shown In the picture.  That’s where the draft arm or side of the blade push against. But my understanding is the end is radius or female ball sockets so one could not line boring that as you would be only makes straight hole. 
Just need to find time to change them on my d6 . Let know if you find a good way to fix the blade arm . 
  [attachment=64321]B8417427-EA00-4FEA-95EF-04879D71D9BD.jpeg[/attachment]
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Tue, Aug 17, 2021 9:26 AM
trainzkid88
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Reply to mog5858:
Well I not sure what’s your asking. Trunnions as I know them are as shown In the picture.  That’s where the draft arm or side of the blade push against. But my understanding is the end is radius or female ball sockets so one could not line boring that as you would be only makes straight hole. 
Just need to find time to change them on my d6 . Let know if you find a good way to fix the blade arm . 
  [attachment=64321]B8417427-EA00-4FEA-95EF-04879D71D9BD.jpeg[/attachment]
Attachment
mog do you know if they are available for d46u models mine are worn and it might be an idea to change em.

niel the ram pivots were worn on ours we just got new brass bushes turned to fit when the machinist did the rams.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Tue, Aug 17, 2021 4:59 PM
Old Magnet
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Reply to trainzkid88:
mog do you know if they are available for d46u models mine are worn and it might be an idea to change em.

niel the ram pivots were worn on ours we just got new brass bushes turned to fit when the machinist did the rams.
The D4, D4D, D5, D6, D6B all use the same trunnion.
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Wed, Aug 18, 2021 12:26 AM
trainzkid88
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Reply to Old Magnet:
The D4, D4D, D5, D6, D6B all use the same trunnion.
om thats good to know. i was told the 6u engines internally are similar to d6 with both using the same pistons rods and valve gear.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Thu, Aug 19, 2021 4:33 PM
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