TH400 rebuild tech
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(→Full manual shift modifications) |
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Drill the marked holes to .125" (1/8") for street use. At the 1-2 shift hole location (designated #2), drill the small hole out. | Drill the marked holes to .125" (1/8") for street use. At the 1-2 shift hole location (designated #2), drill the small hole out. | ||
| − | For a heavy duty application: 3rd gear shift use a .150" drill (#25 bit, .149) and leave the 1-2 check ball out. '''Caution:''' A 34 element sprag needs to used with the 1-2 check ball removed. | + | For a heavy duty application: 3rd gear shift use a .150" drill (#25 bit, .149) and leave the 1-2 check ball out. '''Caution:''' A 34 element sprag needs to be used with the 1-2 check ball removed. |
Near the bottom of the separator plate in photo, the hole in the round black circle (designated 'Dual Feed') should be plugged when the dual feed modifications are performed with the center lip seal removed from the direct clutch drum. | Near the bottom of the separator plate in photo, the hole in the round black circle (designated 'Dual Feed') should be plugged when the dual feed modifications are performed with the center lip seal removed from the direct clutch drum. | ||
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[[file:100_2218-1.jpg]] | [[file:100_2218-1.jpg]] | ||
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===Boost valve modification=== | ===Boost valve modification=== | ||
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