67RModel

Sorry but this is just frustrating. It literally has the gentleman's phone number listed in the original posting. Maybe you tried dialing it and its no longer a valid number? The original post is nearly 7 years old and the guy has only ever made one post on here and has not been back in well over 4 years.......

Yes very scarce model indeed. Only 67 N613s made during their production run from 1957-1960.

Sorry for my ignorance but who was Ed Ackell? Was he a longtime forum member? Was Hatcity is user name? From everyone's comments he seemed to be a very admired guy around here.....

It has an 8V71 Detroit and a 13 speed. Hendrickson walking beam suspension. All original unit. Will be getting a complete restoration and a period correct Rest Rite sleeper installed on it

This post is more of a shout out and/or review of Ray Sidella's @mack mhe9 (on the forum here) antique truck transport services. I was in a bind because I found a truck I have always been after, however, it was two states and 300 miles away from me. All my typical resources were either tied up and/or couldn't get to the job for quite a while. I tried UShip but had zero confidence in any quotes I received from them. I started reading through some of the threads on the Transportation section of the forum here and kept seeing Ray's name come up. I contacted him through PM and got an almost immediate response. I told him the particulars of the job. He gave me a very reasonable price and a fairly firm timeframe that I was comfortable with. I never met this man before but after the two phone conversations I had with him setting up the details I knew he was the guy for the job. He was very responsive, communicated at every step of the process, and did exactly what he said he was going to do.....and at a phenomenal price. I would recommend him to anyone who needs a truck or piece of equipment moved. From what I gathered he is from East-Central Pennsylvania and mostly runs the mid Atlantic States. If you need something transported in these areas he is the guy to contact. He also runs a cool old Mack MH cabover to boot. I attached some pictures of his rig with my truck for reference.

Its there (unless the truck had new frame rails put under it at some point). You just need to get a little wire wheel on a cordless drill and clean off the frame. My 1960 B81 and my 1967 R model have the model/serial number that matches the door tag stamped into the frame rail in the front passenger side where everyone is showing. My 1994 RD690 is in the same location but as Vlad said its an actual VIN number not the model/serial number like you will see

I know these systems spit out all kinds of errors when one thing is wrong but he did say he is getting a crankcase pressure fault. Maybe these cylinders are putting their pressure into the into the crankcase. But like you said....doubtful.

Interesting. Makes good sense when its explained. It looks like the compression test is functioning properly then. That is to say I guess you can trust that cylinders 1 & 6 have low compression since those are the two that were repaired. What would the chances be that both 1 & 6 have good compression and the test is saying they do not? So it has low compression in those cylinders. Can failed injector cups and/or repair mistake somehow bleed pressure out of the cylinders? Valves not sealing? Cracked piston? Cracked liner? Not much else could be wrong. Am I missing something?

Also 178 r/min seems like too low of an engine speed even at low idle...

I don't know how these new systems work but I'm curious as to why cylinder compression is measured as a percent (%). A percentage of what? What it was when it was new? What instrument or sensor is determining % compression? Did you mess with the valves during your repair? Maybe you could check the valve lash on cylinders #1 & 6 to make sure they are sealing properly?

Thank you but no. I guess I was just wondering if there was any way to tell based on the serial number if it was the first magnum produced. The way I understand it is the "Magnum" was a paintjob, pinstripe, and a different interior so its not like this truck would be a RW7xx - 1001. Thank you for the offer but I was just typing what my mind was thinking and that's really all I want to invest into this one lol.

Is this really the 1st Magnum made or was that something from the previous owner's advertisement? I'm not disputing it or being critical of your work but I was just curious is all.

This is correct. If you shift into the "1st" hole with the deep reduction engaged then subsequently to 2nd then 3rd, etc. you will not gain road speed like you feel like you should and realize what your error is. I was told by an Eaton rep that it is not advised to run the transmission in any gear other than Lo with the deep reduction engaged. Something about lubrication and premature wear but I know of guys who somehow integrate using it (or maybe its using the Lo gear in high range) into their shifting routine in certain instances with no noticeable bad effects.

Does anybody have the part number for the panel/gauge light dimmer knob for a 1994 Mack RD? Also, what amperage should the panel light fuse be and what is the fuse number/location. I do not have a wiring diagram for this truck. Thanks in advance.

It can hurt to put a post here on the forum in the Classified section. Doesn't cost a dime to do so and it might catch someone's fancy here. I would have to think Facebook Marketplace is currently the best platform simply because of the sheer amount of exposure your ad will have to all walks of life. Another good option is the ATHS "backlot" classifieds as they end up getting published in the Wheels of Time magazine. Most of the traffic here is related to troubleshooting, wrenching, comradery, etc. but there is a large concentration of "Mack Guys" here so you never know.....

It depends on how your CDL is classified: interstate or intrastate. If you have it classified as interstate they will revoke it if you don't get your medical card renewed. If you get it changed to intrastate you get no correspondence regarding medical examination. I can vouch for this as I have had it classified as both ways at different times. You can go to the DMV and get is switched for something like a $10 administrative fee. But if you have it classified as intrastate you better not get caught in a neighboring state without a valid medical examiners card. All they guys saying your license will get taken are probably saying this because yes that's true if your CDL is in the interstate classification. A lot of guys do not know you can get it changed to intrastate travel only. I'm not quite sure what the government's logic here is but if you are medically unqualified to drive a 80,000 pound vehicle I don't see how staying within any state's boundary makes it OK to do so.....

I think Zollner became or was bought by Mahle of Germany. If you go to a high quality machine shop that works on heavy duty engines they may have some old catalogs or may be able to find a catalog cross for the old pistons. All the machinists that worked on and overhauled those engines back in the 60s and 70s are probably long gone but there is somebody somewhere can probably find an modern replacement?

I just realized that the Detroit Pistons basketball team were named as such because they were started by Fred Zollner, who started Zollner Corporation as an OEM piston supplier to just about everyone (including the pistons you have there). If you google Zollner pistons all you get is basketball information.......Sorry I'm no help but somebody will be along here with useful information....

Probably not a bad decision. Lets face it; in this category of truck no matter what you look at is gong to need a bunch of little things addressed sooner or later. As long as the major mechanical components are solid you should have a home run at 11 or $12,000 if your budget was $35k. Leaves a lot in your pocket for immediate maintenance and/or repairs. Being that the truck is from the south and never left a gravel pit the chassis should be absent of any corrosion or winter/salt damage. This makes maintenance so much nicer in my opinion. Also I see it has a fully mechanical E7, which is pretty much the pinnacle in my opinion of Mack engines. If it has compression and fuel it will run. No nanny electrical wizardry.

Joey isn't there some quirk about the twin stick 6 speed about not being able to move the truck while the PTO is engaged? If I remember correctly the auxiliary transmission has to be in neutral for the PTO to operate and you have to select a gear in the main box that gives a desirable PTO speed? This makes "tailgating" material with one impossible. Am I thinking about that correctly? If I am right that is literally the only drawback to one of those units. They are the quintessential Mack vocational transmission that pretty much cemented Mack's reputation as a "work truck".

If your not driving it shipping would be the only other option, which is an exercise in pulling your hair out if you don't personally know or have experience with a reputable transport person/company. You can create a load on Uship.com and about a zillion brokers will contact you with a price to haul it to your location but its a literal coin toss as to whether you are going to get jacked around or not. All the brokers that deal in one off loads like that promise the word and usually underdeliver or just don't show up because they weren't able to work it into their schedule after they told you they could. Then you are sitting in Arkansas and your $20,000 investment is sitting in some stranger's lot in Pennsylvania. Personally, I would not recommend going that route.....

It’s a 5 speed just like the 2070. The far right stick is the auxiliary. It has low direct and reverse on the right stick. Start with main box in 1st and auxiliary in low get moving and shift auxiliary to direct. Then you just shift the main like a 5 speed. Then for reverse you put the auxiliary in reverse and you have 5 reverse gears by selecting any gear on the main box. The auxiliary low is only used when the main is in 1st so it’s a 6 speed forward and 5 in reverse. The auxiliary low is only used in situations where you would use your two creepers in a 2070. Very robust and indestructible unit and excellent for dump truck work.

The international equivalent to Mack RDs and DMs are Paystars. Very heavy duty trucks with either Cummins or cat power. Most have Hendrickson walking beam rear suspension which is just about equal in articulation and durability compared to Mack camelback. All the same rules apply to inspecting the truck as you would a Mack there’s just a different emblem on the hood and a different color paint on the engine.

This. I found a truck at an independent used truck dealer that deals mostly in late model off lease trucks and trucks from rental fleets I assume. The truck I found was barley advertised and stuck in their back lot where their old inventory goes to die before being exported. It just didn’t fit what their typical clientele purchased. I asked them to send me a bunch of pictures of it and came to realize it was a gem. Made the trip down there to look it over and realized it was a extremely nice gem. I was able to decipher the old DOT number and looked it up. It was an one truck fleet excavation owner operator. I contacted him and he told me he bought the truck new in 1994 and drove and maintained it himself. The 335k miles are indeed accurate and that his tax man told him he needed to spend money at the end of 2019 so the old Mack got traded in. It’s in amazing condition for its age and I was able to get it for a good price because the dealer I bought it from didn’t think they could move it to they people they typically sell to. They are out there you just have to look long and hard to find them.

I mean this truck has been advertised for quite some time and has a very recent inspection: https://www.facebook.com/marketplace/item/303868681768819/?ref=search&referral_code=marketplace_search&referral_story_type=post not as new as what you have been looking at but certainly a lot of good life left in her. Especially since you say you mostly are going to use it on your property and local deliveries. Could probably pick it up for a good bit less if you flashed a bunch of greenbacks at the owner.