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hcaliber 09-20-2009, 11:22 AM If truck sits off for more than an hour and i start truck and put in gear it will take 10-20 secs for tq to engage. If i idle truck for a minute it seems ok. almost as if tq is draining. What would cause this? Also have SC STG IV installed. DrHolliday 09-20-2009, 11:28 AM I know there is a drainback valve in the trans, my guess is that would be the culprit. I'm not a technically savy when it comes to the trans as others. Might want to post this in the Allison Aftermarket part of the forum, you'll get more of the resident experts to see it there. Horsehaulin 09-20-2009, 01:29 PM Moved to Allison OEM. Randy_the_Hack 09-20-2009, 02:10 PM Moved to Allison OEM... Crafty1 09-21-2009, 09:49 AM I know there is a drainback valve in the trans, my guess is that would be the culprit. I'm not a technically savy when it comes to the trans as others. Might want to post this in the Allison Aftermarket part of the forum, you'll get more of the resident experts to see it there. No drainback valve in the Allison. Its the sealrings on the ground sleeve (stator shaft) and turbine shaft (input shaft) that the fluid leaks past. Check the sealrings are not cut, shaved or broken. Check the fit of the 29531038 ring on the middle of the ground sleeve to the bore of the converter. It should fit well down inside the bore where there's a slightly smaller diameter (look closely and dont drop the ring inside when checking!). hcaliber 09-21-2009, 10:09 AM Finany! sugestions other than check fluid level! Thanks guys hcaliber 09-21-2009, 10:10 AM is this causing harm to my torq? Crafty1 09-21-2009, 12:40 PM is this causing harm to my torq? It shouldn't cause any harm. What you would notice during operation if the leak is big enough would be loss of LU clutch capacity (converter slip while in LU), and then probably only when towing heavy. hcaliber 09-21-2009, 12:51 PM What about trans clutches, should i worry about them? Or are they on seperate system? Crafty1 09-21-2009, 02:02 PM What about trans clutches, should i worry about them? Or are they on seperate system? Basically, they are separate. However, the main pressure feed to the selector valve (C1 in 1, 2, 3, 4; C2 in 5, 6) can see a pressure drop if the flow to the TCC is too high. hcaliber 09-21-2009, 02:08 PM since i am not getting enough flow to torq in theory i should be ok...but what about coolng system? seems as though i am not getting very good flow if torq is not locked. What do you think about that? Same cause? | ||