Geoff Weeks
Pedigreed Bulldog-
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Geoff Weeks last won the day on September 17 2025
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Location
western Iowa
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My Truck
1992 Marmon
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Geoff Weeks's Achievements
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My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
It will, mine was 12 volt - when I bought it. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
Since the filter provides a restriction between the main oil rifle and the sump, removing will not change the pressure. the restriction in the housing limits the flow through the filter to the sump. a restricted filter would not change the pressure. You could try shimming the relief, but I would guess the bearing clearances are more likely. I can't remember if you went through the engine or not. Main bearing sets are hard to find and come in two types, thrust washer type and conventional rear main with thrust surface on the bearing shell. You can use either type, but you have to either remove the thrust washer retaining pin or notch the shell to clear the pin and leave it in place. On mine, I tend to think may be the oil pump shaft bushing may be worn and leaking pressure out of the pump past the shaft bushing. It tops out at about 40 PSI but hot it drops a bit. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
Although they are a bypass and don't do a great deal of filtering, I don't see any gain by not having it in there. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
No, no change to the valve cover. There is (on mine anyway) a 1/4" NPT port that is hooked to the air cleaner in the original set up. I remove this tube and the flare adapter in the valve cover and use a thread in PCV valve in its place and connect to the vacuum port on the manifold. So it draws air in through the fill cap metal gauze and the fumes out the valve to the manifold. As to oil filter, I have one, my 1942 has a Michiana with a paper element and two with a Deluxe with the "sock type" filter. I can get the paper element from Baldwin filters, and have a few sock filters. I had thought of making an adapter and fitting an industrial "Spinner" filter. The ones for trucks need air pressure to return the oil to the sump, the industrial versions are set for gravity return. Unless you want to re-route the oil from the oil pump to the main oil rifle, full flow filtering is not an option. I think you know the relief valve is in the filter adapter, so you can't remove the filter adapter as you'll be removing the relief valve as well. I think the socks are still available, but you may have to look a bit. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
It is what I use, and much better than anything they had "back in the day". I put a PCV system on mine and it helped alot keeping moisture out of the crankcase. -
Need some big help.
Geoff Weeks replied to hicrop10's topic in Antique and Classic Mack Trucks General Discussion
My understanding from previous posts is: he removed all the wiring before working on the cab, so telling by the ammeter will not work. Modern gen regulators are universal. Original regulators will work fine on reverse polarity but the point contact make up was optimized for one polarity to give the longest life. Not something a Hobby truck will ever even notice. Without the original to go on, it is unlikely to matter and negative ground is universal today. If he needed to change, it is as simple as re-polarizing the generator and swapping the battery cables. It is the generator, not the regulator that needs to be polarized, but that is easiest done at the regulator terminals. Regulator doesn't require any change to run "reversed". Some early Western Star and Autocar's use gauges that are positive ground only and can not be made to work (at least easily) on neg ground. Transistor radios will be harmed on reverse polarity. Alternators with one pole grounded to the case will be damaged if hooked up reverse. -
Need some big help.
Geoff Weeks replied to hicrop10's topic in Antique and Classic Mack Trucks General Discussion
Connect the chosen polarity battery to the frame of the truck. with the rest of the batteries hooked up, go to the regulator, jump the battery terminal (B) on the regulator to the armature (A) for a second or two, and that is it. You have polarized the generator and it should start charging the correct way for the way the batteries are hooked. -
Need some big help.
Geoff Weeks replied to hicrop10's topic in Antique and Classic Mack Trucks General Discussion
Looks like it is wired for neg ground, but I can't say for sure. Once again, look to the alternator (if there is one) or the voltage regulator for a generator (they are sometimes marked as to polarity). If not marked, and there are no electronics, then chose one polarity and run with it. Neg ground makes the most sense today. -
That is a very good way to approach the problem. If the drums are worn but not terrible, a re-lined set of shoes will outlast your lifetime if you aren't stopping 80K lbs on a daily biases. Don't let perfection prevent good enough. Talk to some heavy truck parts houses and find one that will either re-line or send your shoes out for re-line. Last time I did that it was a week + or- for them to be ready for pick-up. Being a hobby truck you can wait that long.
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Start by assessing the drums, if they are serviceable and you can get the casting number off them, it will help looking for parts. If the drums are trash, and an odd size, then it is going to be a struggle to find what will bolt in place and work.
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As long as the shoes themselves are not damaged, having new linings installed on the old shoes is likely the best solution.
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I know the pain you are feeling, and you have my sympathy. Those that have never had a close relationship with another animal can't understand the pain losing one can be. I had to put one down, and I had another die "natural", and the pain and loss is no different. Only thing is with the first you know it is coming and is a relief for the animal. Either way it is the loss of a family member. I allowed myself to grieve and then when the time was right, took another into my heart and home. Peace be with you and your family at this hard time.
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My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
A bit of trivia. You'll notice on the picture of the right side of the block before you painted it, another "fuel pump" mounting pad/opening that is covered by the generator mount. Early versions of this engine had either a gear drive generator on the left side (driven off the cam timing gear) or could be had with a Mag there also. Both precluded driving the fuel pump directly off the cam on that side. A pushrod was used across the block to the fuel pump mounted on the right side (behind where the generator is now). When the engine was designed, they used either of the two above ways to time the spark, so left no other provision for a distributor on the engine. When gear driven generators proved to be a problem, requiring timing to the engine when removed, and mag left no provision for battery charging. originally the oil pump drive was capped off at the upper end. It was near vertical and close into the block, so that left no room for mounting a distributor next to the block driven off the oil pump drive. The shaft had to be extended to above the valve cover to have enough room to mount the distributor, giving the BLD the distinctive high mount distributor. For a brief time in the early 50's when the block was re designed for full flow oil filter and the liners were removed so the displacement increased to 308 for the biggest engines, they added a pad near the oilpump drive gear on the cam and an opening to allow for "low mount" distributor at cam level. This was so the engine could be fitted in the low cab cabover trucks of the day. Conventional cab trucks still used the high mount distributor. I have only seen one with the low mount, and that was in pictures. When the block was re designed in the 50's the opening on the right side of the block was eliminated. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
One of mine has the same GVW the other is 21500 GVW. EW on yours and my flatbed is right around 6500-7000 lbs. so 10,000 more is right there. -
My '48 Int. KB-7 (Sanford)
Geoff Weeks replied to Joey Mack's topic in Antique and Classic Mack Trucks General Discussion
Vlad, unless that is unique to the Lend-lease vehicles, that truck is no larger than a K-7. The -8's and up had 10 lug wheels. -5 and down had 5 lug and -6, -7 had six lug. -7 will handle 5 tons no problem. I have done on mine. Harder to tell when they have spoke wheels, but easy when they have disk's. Also the hood isn't long enough to be an 8 or higher.
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