No Fourth, Fifth, and Sixth Gear
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No Fourth, Fifth, and Sixth Gear
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Checks
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Causes
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4-5-6 Clutch Assembly
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Inspect for damaged or broken 4-5-6 clutch piston (433) and piston seals (430-432).
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Inspect for broken or disengaged 4-5-6 backing plate retainer (442).
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Inspect for damaged or broken 4-5-6 clutch dam piston (435) and piston seals damaged, worn or delaminating.
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Inspect for broken or disengaged 4-5-6 clutch dam retainer (436).
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Inspect for sheared or stripped splines on the reaction carrier hub (438).
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Inspect for sheared or stripped splines on 3-5-rev/4-5-6 housing to turbine shaft (422).
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Inspect for loose, worn or damaged 3-5-rev/4-5-6 housing bushing.
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Inspect for broken, porous or improper surface finish or plugged oil passages of the 3-5-rev/4-5-6 housing (422).
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Inspect for failure of the Input shaft thrust bearing (32).
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Inspect for damaged, stripped or sheared splines on 4-5-6 clutch plates (439-441).
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Inspect for broken or fatigued 4-5-6 clutch piston return spring (434).
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