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One of the trucks I drive for work has a square rubber mounted (isolated) dangly thing that is attached under the tranny. It's located (attached) on the rear tranny crossmember by the two studs, The two in the center that mount the tranny to the crossmember. The unit is made of steel and rubber. OK, this sounds like I'm describing the mount but It's not. It hung down 4" or so. The truck is a 88 F-350 4x4 Diesel Crew cab longbox that was shortend to a short box. What was this thing? I took it off, It hung up going through cross ditch's and the like.
Nope, Was in the middle of truck. It looked as if it belonged there, for the life of me I don't see its purpose. Steel outside with a rubber isolator and steel again.
It bolts to the bottom of the cross-member using the tranny mount bolts. I have seen them only on automatics, no manual trannies, though that doesn`t mean they aren`t out there. I personally don`t understand how it`s supposed to work. To me, it`s just extra weight hanging down and an obtrusion just waiting to get you hung up on something, not to mention, unsightly.
The truck does have a automatic in it, Vibration damper....? My other crummy has an automatic as well, minus the thingy. It's not a carrier bearing. What kind of vibration would such an external attachment dampen?
It`s supposed to somehow dampen harmonics from the tranny if I remember correctly. Don`t ask me how. I`ve had them on 1986 F350 Diesels w/C6 and 1986 460 Gas w/C6. My parts manual even shows them on some 1986 I6`s, 302`s and 351`s though I`ve never seen them. It is actually called an insulator. It`s junk as far as I`m concerned. I always assumed the tranny mount absorbs the vibrations but I guess it is just for flexible mounting and is actually called the rear engine mount in the parts manual.
My dad owns a 92 Ford diesel with a manual transmission and the dealer told him that it was a dampener, although it worked better in snagging grass, trash ect.
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