jesusgatos
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Decided to swap my M109 motorhome box over onto an M939 series 5-ton, so mah deuce is getting bobbed. Plan is to set the wheelbase somewhere right around 12ft, and use an M103A3 bed, cut down to 8ft, with a 5-ton-style spare tire rack between the cab and the bed. Also going to cut-up an M101A3 bed, basically removing the floor, then set that on top of the M103A3 bed. But the bedsides will be removable, as I'd also like to be able to install a 5th wheel plate and I've got a few questions about that.
First, I've taken a bunch of dimensions from the 5th wheel plate and mounting setup an M931A2, and I'm wondering if the 2.5-ton and 5-ton trucks use the same 5th wheel parts. Are the 5-ton parts bigger/heavier? If that's the case, might want to get 2.5-ton parts, as I won't be pulling any super-heavy loads with a bobbed multifuel deuce.
Also wondering about the wheelwells on the M108" 3A3 bed, and whether they might be a problem. The wheelwells are 13" tall, and the 5-ton 5th wheel plate trailer coupling surface sits about 12 5/8" above the framerails. The stock M101A3 trailer bedsides are 18" tall, but like I said, those will be removable, so they're not really factor as far as 5th wheel clearance/interference is concerned.
The 5-ton 5th wheel plate is mounted about 4 1/8" in front of the bogey, and I've read that 2-4 inches in front of the rear axle is what's generally recommended. Figure I ought to go further forward than back, in order to distribute weight more evenly between the front/back axles, since there will only be a single rear axle. Any advice?
First, I've taken a bunch of dimensions from the 5th wheel plate and mounting setup an M931A2, and I'm wondering if the 2.5-ton and 5-ton trucks use the same 5th wheel parts. Are the 5-ton parts bigger/heavier? If that's the case, might want to get 2.5-ton parts, as I won't be pulling any super-heavy loads with a bobbed multifuel deuce.
Also wondering about the wheelwells on the M108" 3A3 bed, and whether they might be a problem. The wheelwells are 13" tall, and the 5-ton 5th wheel plate trailer coupling surface sits about 12 5/8" above the framerails. The stock M101A3 trailer bedsides are 18" tall, but like I said, those will be removable, so they're not really factor as far as 5th wheel clearance/interference is concerned.
The 5-ton 5th wheel plate is mounted about 4 1/8" in front of the bogey, and I've read that 2-4 inches in front of the rear axle is what's generally recommended. Figure I ought to go further forward than back, in order to distribute weight more evenly between the front/back axles, since there will only be a single rear axle. Any advice?
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