Ballenxj wrote:
StingrayL82 wrote:
j-d wrote:
StingrayL82 wrote:
The torque on mine, per the service manual, is 300-350lb-ft.
Would you please verify that? 300 is up in the tractor-trailer range, studs an inch or so diameter. We had a single rear wheel B300 and the manual, and I know for certain I wasn't out there with the 3/4" square drive socket set. The buses our church had, ?es. The Van? No.
The low-mid 100's makes sense.
Holy COW! That's a lot of foot pounds. :E
What are the possibility of that being a misprint or typo?
The online chart Discount tire posted has a 1986 to 1993 D350 with dual's listed at 160 ft lbs. https://www.discounttire.com/learn/wheel-torque#dodge
No, the chart StingrayL82 provided is accurate and possibly from OEM manuals. Also, what you're citing is for 'late model' (relatively speaking) 1-ton Dodge pickups. There are significant differences between axle configurations in heavier (1-ton and up) Dodge trucks.
Note the different wheel stud sizes, types of lug nuts, and single versus dual wheels in the chart StingrayL82 provided. The chart starts with 1/2 inch wheel studs and goes up to 7/8 inch. Single versus dual have differences because you're trying to clamp two layers versus one. Finally, conical nuts versus flanged nuts are different because of how they apply pressure to the wheels.
The figure you cited from discounttire.com is likely the result of a misunderstanding. The people who 'populate' websites and third-party manuals are often minimum-wage workers with little or no first-hand knowledge of the subject. I've encountered this frequently.
I encountered one example within the past year, on my 1990 Ford van. The wheel bearing preload torque specification in the Chilton's/Haynes manual I was relying on were woefully insufficient. Following that specification resulted in difficulty aligning the front end and uneven tire and brake pad/shoe wear. Worse yet, it significantly reduced braking force because only a small part of the pads were coming in contact with the rotors. (I couldn't get my hands on OEM specifications so I went 'old skool' to preload the bearings.)
Another example is from a consulting contract I picked up for overseeing the implementation of a new online store. The business owner had a thriving 'bricks-and-mortar' store and wanted to have a website as well. I had to explain to her the 'computer-savvy' person she's hired to do the computer/internet work didn't have any real knowledge on semi-precious stones, beads, and other jewelry making supplies and tools.
