PMC

I have been able to source new brake hoses. Wagner F4050 crossed to a Napa 24458. Appear to have the correct ends and pretty close in length. A closer inspection of my old hoses revealed the two fronts were about an inch different. The rear matched the shorter of the fronts. The factory parts book lists the fronts as the same so i am guessing one must have been replaced, just not sure which one...

I have been pecking away at getting a B20 stopping again. After going back and forth I have been able to source new hydraulic cylinders and thought it may save someone the effort. I think that a B30 with hydraulic brakes are the same but not 100% Front Wheel cylinders- Napa 8806 and 8807. Sorry can’t remember which is L vs R Rear wheel cylinders. Napa 15308. Master Cylinder -Napa M661 RH rear adjuster kit - Euclid E-4148-Tu. Not sure on the LH side but the thread is backwards. Not exact but very close. The adjustment springs are different but I was able to fab up what I needed from some old anti rattle clips i have shipped the Bendix hydro vac booster to Apple Hydraulics in NY and am waiting for its return. I have used them in the past with good luck. Front wheel seals - Napa 27269 Rear wheel seals - 34994 I am still trying to source new brake hoses. It appears that all 3 are the same. If anybody has a lead I would appreciate it. I do have a parts book but the numbers go nowhere.

I am curious to know how the Chrysler V8's were attached to the transmissions in the R400 trucks? Did they use the Mack Trans with and adaptor or a Chrysler product? Thanks PMC

I have a late (ET 673) rated at 260 HP. This spring I did some updating and installed a turb as well as a E6 Intake manifold/Water manifold/oil cooler/2 spin on filters in pace of the canister filter. The motor now has much more oil pressure then it did before. Used to run 55-60psi warmed up going down the road and around 30 at idle. Now its 100+ warmed up and roughly the same 30 at idle. There appear to be two oil pressure relief valves in the new set up. One at the bottom of the oil filter stock and a second at the top in the filter head. I have pulled both plugs and checked to make sure that the valves move freely, which they do. The springs seem to be same but the upper plug has a longer boss while the lower has a relief in it creating more spring pressure on the upper valve. Did I mix them up when i cleaned everything up? Which one controls pressure or do they both? Is the top just a bypass for the filters/oil cooler? Guage port is in the top where the filter head is. Thank you PMC

I have early (steel dash) u model parts truck with the angled gauge center section. I had thought it was a U-Model thing as i am not as familiar with them.

Bought a R700 a couple years ago and lost the cable on the way home. From what I remember there are 3 lengths available. A good Mack dealer should be able to get you what you need. I was in a bind and was able to get a local supply house to make one for me.

How about some "screw nails" i have often seem them holding ID plates on older equipment. McMaster offers quite a variety. https://www.mcmaster.com/products/hammer-rivets/screw-nails-for-metal-plastic-and-plywood/

Can you load any pictures? I wonder how close to a 237 setup it is?

I have been running around B68 that was previously converted over to a diesel. I always assumed that it was a 673 in some version as it is not turbocharged. Today I was curious what version of 673 it is and was looking it over and found a tag that seems to identify as a ET673 -260 hp built in 1978 as well as the stamp by the injector pump housing. What little information I can find seems to indicate that it should be turbocharged? Anybody familiar with these? Thanks PMC

I have been running around B68 that was previously converted over to a diesel. I always assumed that it was a 673 as it is not turbocharged. Today I was curious what version of 673 it is and was looking it over and found a tag that seems to identify as a ET673 -260 hp built in 1978 What little information I can find seems to indicate that it should be turbocharged? Thanks PMC

Sold for $14,300 + 10% buyers premium!!!

Not mine, but thought I would share. Listing says 5 speed, but seems to be a tag i am not familiar with that indicates its a duplex, but i only can make out one shift lever... unishift? Seems like a solid/straight truck and with some nice period options... Chrome grill/air cleaner+extension/chrome hood latches/aluminum drivers step tank/factory headliner. Interesting that it does not have a passenger tank, but rather a step like i have often seen on gas trucks... anybody have thoughts? https://www.auctionsinternational.com/auction/31468/item/1962-mack-b61lt-tractor-truck-195810

Was looking for some other pictures and found these..:

Nice truck Very Nice early 2 piece western grill. Farr air cleaner looks good. PMC

Aran always has a bunch of trucks for sale and not for sale. Last i knew they were trying to thin down a bit. They had the 1,000,000th mack in the shed at one point. Green superliner with a 36 bunk.. PMC

I looked through Watts before i posted but did not see them. Took another look and you are correct, they do show both black and chrome under the B model parts. Thanks for you help. PMC

Does anybody have a source for the early battery box latch? Looking for one. Used would be fine.

Pulled the stick on the V8 and the end seems to have broken off. Anybody have a spare dipstick or willing to take an overall picture? i think it lost about and inch... thanks pmc

Pulled the stick to check the oil on my V8 and the tip of the dipstick seems to have broken off. Anybody have a spare dipstick or be willing to snap a couple pictures showing the correct length so I can braze a new tip on? Thanks PMC

Looking for a pair of RS700 rear spring hangers for the steer axle. Part numbers 510K4215A (Right) and 510K4215B (left.. not 100% on this number). I have had no luck with Mack or aftermarket suppliers. Probably going to have to be used. Thanks Patrick

Thanks for sharing. Great pictures.

Had an opportunity to stop and look over this truck last week and meet MR Wilbur who is quite the gentleman. Truck was said to run/drive but did not fire it up to lack of batteries. Had typical rust in cab. Extremely heavy bed. Don said they used to drive dozers up on the deck and then use the winch to pull up the ramp behind it. Guessing 262 cummins powered.

Do you have any pictures? How big is the cab opening? Thanks PMC

Nice L Cab B7x? any more pictures of that?