TH400 rebuild tech
m (addition info on full manual shift mods) |
m (→Full manual shift modifications) |
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Drill the marked holes at .125 for street use. | Drill the marked holes at .125 for street use. | ||
| − | For a heavy duty application : 3rd gear shift use .150 drill 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 .150 drill and leave the 1-2 check ball out. Caution a 34 element sprag needs to used with the 1-2 check ball removed. |
[[file:T-400feed-holes.jpg]] | [[file:T-400feed-holes.jpg]] | ||
Another mod is blocking the 2-3 accumulator. I do this with a set screw. You tap the hole and install the set screw available from any hardware store. | Another mod is blocking the 2-3 accumulator. I do this with a set screw. You tap the hole and install the set screw available from any hardware store. | ||
| − | This firms up the 2-3 shift. | + | This firms up the 2-3 shift. Re-Install the piston in the hole. Do not use a plastic piston, they break |
[[file:100_2218-1.jpg]] | [[file:100_2218-1.jpg]] | ||
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===Boost valve modification=== | ===Boost valve modification=== | ||
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