TH350 rebuild tech
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[[File:T-350_fwd_drum.jpg|thumb|300px|left|Check forward drum for wear.]]<br style="clear:both"/> | [[File:T-350_fwd_drum.jpg|thumb|300px|left|Check forward drum for wear.]]<br style="clear:both"/> | ||
| − | + | ===Pump assembly=== | |
'''Notice''' the scraped and split low reverse friction in the intermediate piston cavity. This slightly tightens the intermediate clutch clearance to achieve cleaner 1-2 shift. | '''Notice''' the scraped and split low reverse friction in the intermediate piston cavity. This slightly tightens the intermediate clutch clearance to achieve cleaner 1-2 shift. | ||
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Sealing rings on the pump stator. You can remove the second ring from the bottom if dual feeding. | Sealing rings on the pump stator. You can remove the second ring from the bottom if dual feeding. | ||
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| + | [[File:T-350_stator_rings.jpg|thumb|300px|left|sealing rings on pump]] <br style="clear:both"/> | ||
Pump gear install. Note the orientation of the tangs on the inner gear. They are offset. They should face away from the seal. Mis-installation will result in pump failure and converter damage. | Pump gear install. Note the orientation of the tangs on the inner gear. They are offset. They should face away from the seal. Mis-installation will result in pump failure and converter damage. | ||
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| + | [[File:T-350_pump_half.jpg|thumb|300px|left|Notice inner pump gear tangs, they must be up as you look at the pump here]] <br style="clear:both"/> | ||
Notice the dowel pins threaded into the case, you use these and the case to align the pump halves. | Notice the dowel pins threaded into the case, you use these and the case to align the pump halves. | ||
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| + | [[File:T-350_pump_alignment.jpg|thumb|300px|left|One method to align the pump halves shown]] <br style="clear:both"/> | ||
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Use a rubber tipped air nozzle to apply air to the passages around the pump circumference. As you apply air to the correct passages, you will see and hear the drums apply the clutches. Be sure there are no leaks from the lip seals. There will usually be some minor leakage at the sealing rings. Iron rings air check better than teflon on the bench. | Use a rubber tipped air nozzle to apply air to the passages around the pump circumference. As you apply air to the correct passages, you will see and hear the drums apply the clutches. Be sure there are no leaks from the lip seals. There will usually be some minor leakage at the sealing rings. Iron rings air check better than teflon on the bench. | ||
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| + | [[File:T-350_air_check_pump.jpg|thumb|300px|left|One method to air check clutch drums in the pump shown. Refer to build manual for locations]] <br style="clear:both"/> | ||
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Drums installed in the transmission case. Ready for intermediate pressure plate install. Ensure the lugs of the direct drum are engaged with the sun shell. They should be slightly below the top edge of the sun shell. If you do not get complete engagement, the input shaft will not turn when you install the pump and begin to tighten it. You can also see the braking band installed. | Drums installed in the transmission case. Ready for intermediate pressure plate install. Ensure the lugs of the direct drum are engaged with the sun shell. They should be slightly below the top edge of the sun shell. If you do not get complete engagement, the input shaft will not turn when you install the pump and begin to tighten it. You can also see the braking band installed. | ||
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| + | [[File:T-350_coast_band01.jpg|thumb|300px|left|Both clutch drums installed with braking band shown.]] <br style="clear:both"/> | ||
===Braking band=== | ===Braking band=== | ||
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