67RModel

It looks like a complete disaster in that warehouse but I give these guys extreme credit for keeping their used up trucks and parts under roof and out of the weather. Not rotting away in some field or lot.

Saw this listing on Facebook Marketplace. No affiliation. Just passing the information along. Looks like it could be a little honey hole for someone. Mack R Model Tractors/Semi-Trucks for Part out/Sale (15 available) - Commercial Trucks - Chicago, Illinois | Facebook Marketplace | Facebook

Honestly If I was Johnny Law I would trust the VIN stamped into the frame rails to be the actual VIN of the vehicle. So long as that matches what is on the title what's the problem? I ran into this issue exporting a truck once. Door had been changed and the VIN the port people were looking at didn't match what was on the title and bill of sale. The dock workers initially refused to load the truck onto the boat. A bunch of phone calls later had them looking at the frame rail and all was good. It wass partially my fault for shipping the truck without removing that door tag. The door had clearly been changed. The cab, hood, and passenger door was white the drivers door was blue.

There are all kinds of cheap shop and service manuals for K series Case 580 backhoes on Ebay. I saw a full set with a parts book for $108. I would snag a full shop manual for it and see what it has to say.

Looks like there is another digit after the 31744 on the frame rail....looks to be an "8" in smaller font.

Is it an Allentown (US) built truck? Is the suspension original to the truck? I assume you speak English since your written English is very good. If yes to all three of those then just call Watts Mack in New Alexandria, PA and have them look up the part numbers you need. You will just need to give them the VIN number of the truck. 1988 is still readily available information for them. They are classic and antique Mack experts and actually own/host this website. They can get you the info you need.

Here is another super clean and straight 1969 R model about 100 miles away in Lowell, Indiana. 1969 Mack r model - Commercial Vehicles - Lowell, Indiana | Facebook Marketplace | Facebook

I don't know the history on them or how the system evolved over time. I was on a quest a year or so back to understand the LDA system on mechanically governed E7s and in the process came to understand how puff limiters work as well.... I never did find out if the torque limiting valve was only on Mack transmissions or if it was included on vendor transmissions as well. I just know how they work....

This is somewhat inaccurate. The puff limiter works off manifold pressure in the reversing valve on the intake manifold. Fuel pumps on trucks with a puff limiter system are full rack by default when the truck is stationary an parking brakes applied to aid in cold starting. Once the spring brakes are released, regulated chassis air is sent to the air cylinder on the injection pump. Once boost pressure is sufficient for full rack the boost pressure overcomes the air pressure supplied by the parking brake valve via the reversing valve that is tapped directly into the intake manifold. Boost pressure and chassis air pressure are always hydraulically "battling" each other in the reversing valve for control of the air cylinder in the injection pump. Once running, if the transmission is put into reverse and/or the low forward gear(s) the torque limiting valve is activated. It is piped from its location on the transmission up to the reversing valve (puff limiter) Once its activated it dumps the boost pressure to atmosphere that would normally build up in the system and allow full rack travel. By doing this rack travel is limited in both systems to protect the drivetrain in the low and reverse gears. Once the shift rails are moved to select a higher gear the torque limiting valve closes and allows boost pressure to build up and allow for full rack travel in the injection pump. The transmission (torque limiting valve) is part of the system but not the primary component. The torque limiting valve on the transmission is only there to protect the driveline. I would think by switching to an Allison and you could eliminate the transmission portion (torque limiting valve) of the system because the the torque converter in the Allision will provide a "cushion" to the driveline. Or just know how to use your right foot in low gear or reverse......

A friend of mine had a large fleet of Mack roll off trucks. E7s and ASET engines. 35,000+/- hours was routine before overhaul. His fleet average mph was around 25 mph. I think most vocational trucks are around that 25mph number unless its some type of specialty truck that does a lot of stationary pto work like a stone slinger or volumetric concrete mixer. I would expect an over the road freight truck to be in the mid to high 40s for overall mph.....

Look at the still picture of that first video with the man sitting on the hood of his car. In the background there looks to be a bobtail Brockway and a White 9000 pulling a van trailer. I'm not sure if its a 9000 or a Road Boss but its definitely a White cab. I don't recognize the grille.

Yea stainless steel wheel covers.....

This sounds rather trivial and maybe you already did it but does he remember who he sold it to? If so track them down and and see if they still have it or who that party sold it to. Who did he work for or who was the truck leased to? Canada is a big area. What part of Canada would it be in?

Before my time but wasn't the Blizzard of 1978 some big deal? Like the entire Eastern USA was buried very badly and abnormally cold I think.

Yes you can. However, your driveshaft will need to be shortened as the 13 speed is longer overall. No. Generally speaking modern Eaton transmissions all have the same overdrive ratio of 0.73. I assume you mean cruising in top gear......

I assume you installed an electric shift PTO? If so where did you wire it to? did you check for continuity on those wires using the dash switch before wiring up the PTO? If all that checks out sounds like it could be a software issue....

Isn't there a fairly significant difference in "C-15" engines vs "C15"? I think the C-15 was only made for one year and then it became the C15, then ultimately the C15 ACERT. I don't know what makes the C-15, other than the valve cover, different from the C15 but if I recall correctly it was a more desirable arrangement.

I was always told the first rule of plumbing is: Always have a full tank of gas.....

Na. I wouldn't care if they were. Years back when I moved in I started burning wood and they came out several times to check my meter to make sure it wasn't broken or I wasn't bypassing it. They gave up after the second winter. They should be grateful. I buy their gas for hot water heating, clothes drying, and cooking. I all fairness street natural gas in most cases the lowest cost per BTU of just about any mainstream energy source. I just prefer the radiant heat the stove puts out and how much more comfortable the house is vs running the gas furnace. Also I like to have options. I can heat with natural gas, coal, or in about 20 minutes after the coal fire would go out I could switch out the stove for a wood stove and be heating with wood. I prefer heating with anthracite coal for many reasons but could utilize my other sources if necessary.

They are asking $18,000 US Dollars and if it does not sell by 1/15 they are sending it to an auction. From The Listing: This machine is being sold by norsemenauction.com. It is available for $18,000 USD. If it doesn't sell, it will roll into auction on January 15. The last available bidding day will be January 31. Additional photos and videos available at norsemenauction.com Chains and tools NOT included - Fantastic Condition - Clean Interior - 319,084 Miles - Mack E9 Engine - 440 HP - Turbo - Engine Brake - Differential Lock -12 Speed Manual Mack Transmission - 8x2 - Rubber Block Suspension - Drum Brakes - A/C - Power Steering - Headache Rack - Wet Kit - Mud Flaps - Heated Mirrors

Saw this on Facebook MP. Thought I would pass it along. No affiliation. Nice Superliner with an E9 and 12 speed. Located in Smethport, PA https://www.facebook.com/marketplace/item/382987184137196/?ref=search&referral_code=null&referral_story_type=post

Speaking of coal I got a nice little fire of nut size anthracite going now keeping the house nice and warm. I haul a ton or two in my dump trailer behind my pickup every winter but it’s for personal use. It doesn’t take much to keep my little shack warm all winter.

I figure the easiest way to repair it for a hobby truck is to pull the 5th wheel off and drop the axles and suspension completely out of the truck. Drill the ends of the cracks, and weld it up. Then lay a channel insert on the inside of each frame rail going past each suspension mount at least 2' and bolt it all back together. Any crossmembers in the area of the insert will have to be shortened accordingly. But in your situation where the truck has already been stretched it may be better to just cut off the bad section and start over. Either way its a pretty big job.....

That frame failure is a hallmark of the Hendrickson RT walking beam suspension. For whatever reason the stresses that suspension puts on the frame rails cause the lower flange to separate from the web along the radius of the bend between the two suspension mounts. I have seen it on many Hendrickson RT trucks. In fact my 1974 White Road Boss has the same deal going on.

He was a young guy, who in 1992 rambled off into the Alaskan wilderness with almost nothing with him to live off the land. He ended up finding an old bus miles out in the bush that had been placed there decades before for workers at a nearby mine to live in. He lived in that bus for almost four months. He tried to come back to to civilization but the rivers he crossed were too treacherous by then. He kept a written journal of his life during that time. He ended up starving to death and died in the bus. Hunters found him weeks later. Since his death he has become kind of a cultural icon. Many people over the years retraced his steps and went to visit the bus he lived in. Many documentaries have been made on him and a very popular book was written about his story called Into The Wild. More recently it has been made into a movie directed by Sean Penn I think. So many people over the years have went out to see the bus in the woods and have gotten stranded or killed themselves. The Alaskan authorities actually went in in 2020 with one of those twin rotor military helicopters and removed the bus to prevent people from going in and getting stranded themselves. It is now on display in some museum in Fairbanks I think.