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Cattle Boards
Trucks, Tractors & Machinery
Transmission Overhaul
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<blockquote data-quote="Earl Thigpen" data-source="post: 302193" data-attributes="member: 3999"><p>There are two control units in the transmission which must be applied, one for all forward gears and one for reverse. More than likely the forward clutch pack is shot since you say that ALL forward gears are out. (There's more than two control units but only two for the basic direction. For example to move forward in automatic "Drive" you would need FORWARD clutch pack and a LOW spraque or low clutch pack or band control units to be applied) </p><p></p><p>OK, that sounds like it might not be too bad - hold on. There's not a transmission shop in the world worth their salt that would replace JUST the clutch pack. All clutch friction discs and steels should be replaced as well as all lip seals, o-rings, gaskets and band(s) should be replaced. Throw the torque convertor in for insurance (the torque convertor is difficult, if not impossible, to clean) and rebuild the front pump (only pump) and valve body. Clean the myriad piece parts, replace the bushings and bearings and reassemble.</p><p></p><p>Parts described above can be purchased for about $400 but the bench job is going to cost you $1500 to $2000 (including parts). Now you have just one hurdle to manage - getting the transmission back in the truck and bolted up without destroying the pump because you didn't get the convertor stabbed into the pump correctly.</p></blockquote><p></p>
[QUOTE="Earl Thigpen, post: 302193, member: 3999"] There are two control units in the transmission which must be applied, one for all forward gears and one for reverse. More than likely the forward clutch pack is shot since you say that ALL forward gears are out. (There's more than two control units but only two for the basic direction. For example to move forward in automatic "Drive" you would need FORWARD clutch pack and a LOW spraque or low clutch pack or band control units to be applied) OK, that sounds like it might not be too bad - hold on. There's not a transmission shop in the world worth their salt that would replace JUST the clutch pack. All clutch friction discs and steels should be replaced as well as all lip seals, o-rings, gaskets and band(s) should be replaced. Throw the torque convertor in for insurance (the torque convertor is difficult, if not impossible, to clean) and rebuild the front pump (only pump) and valve body. Clean the myriad piece parts, replace the bushings and bearings and reassemble. Parts described above can be purchased for about $400 but the bench job is going to cost you $1500 to $2000 (including parts). Now you have just one hurdle to manage - getting the transmission back in the truck and bolted up without destroying the pump because you didn't get the convertor stabbed into the pump correctly. [/QUOTE]
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