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#1
29-08-11, 04:51
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Late this afternoon I dropped by the Hammond barn, my first time.
I was there to drop off 5 lengths of a version of Marsden matting that I had scooped for Bob after seeing his post on wanting some. I was able to pass them along to him at cost as my fuel was paid for from another avenue today. I know he would have paid for it if I had needed expenses covering. Grant and Bob were finishing up their day after having doing something to the king pins of Grants truck from what I could make of it. Bob had also crafted with Grant some kind of CMP bracket thingy, Bob is alleged by Grant to have reversed the end plate containing two holes but as I'm not an afficianado of such vehicles it means nothing too me. There does seem to have been some truth to the allegation as Bob was heard to utter some kind of expletive when he realised his lack of attention to detail. Likely as not the evidence will evaporate but Grant and I did see it Bob!! Cheers guys Robin 
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#2
29-08-11, 15:57
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From the Minds at the Hammond Barn
Alright, Robin provided some clues so this should be an easy test of your deductive capabilities. First one is a Carriere creation. Any guesses as to the part it is used to form?
__________________
RHC Why is it that when you have the $$, you don't have the time, and when you have the time you don't have the $$?
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#3
29-08-11, 15:59
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More Mind Games
Grant has been a very busy Rotter these days as well. What are these used for?
__________________
RHC Why is it that when you have the $$, you don't have the time, and when you have the time you don't have the $$?
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#6
29-08-11, 17:05
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So far, so good on the ID
Yes, the first group of 3 similar parts are pullers for the steering pivot pins. The design came from the maintenace manual for the C60X, except that modern bolts seem to mainly be made with a 2 inch threaded sector unless by special order so I made several so that I could increase the length of the puller in stages rather than hunting for a fully threaded 1/2-20 bolt over 3 inches long. Used yesterday afternoon, they worked nicely. On this truck I only needed the 2 shorter cylinders. I don't know if it was an oficially sanctioned modification or not, but someone had ground a short taper onto the pivot pins to make thm easier to start into the bearings. I don't remember seeing this before, but it seems to work.
The second pair of tools are indeed pushers for the pivot pins. The design came from the GM Service Bulletins. They are one each for the 5 inch joints and 6 inch joints, intended to be used after one cap is on (with standard 30 thou shim (or more if extra depth was stamped on the pivot housing) to push the second pin (already started) fully into the housing to take out all slack before measuring the shims needed at the second cap. The original design had a second layer of steel welded to the main plate rather than a nut but my reasoning was that the nut was easier to tap (manufacturted with threads) and that it is designed to take the full load of the bolt so there shouldn't be a need to tap the plate as well. The only other note is that it really needs to have all 4 corner bolts in place to ensure that the plate is parallel to the face of the housing if you want to use it to drive the pivot in to ensure good line-up. Once the pin is almost fully in the housing you might get away with only 2 bolts to hold it onto the housing but 4 adds strength and stability. For guessing the purpose of Bob's jig, it may help to think of the vehicles he, Rob and I specialize in.
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#7
30-08-11, 03:12
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I notice no pictures of the botched piece that Bob made that I saw . . . .
R
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