Changed tranny fluid
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Changed tranny fluid
Changed tranny fluid on the 05 screw the other day but I didn't really know which line to disconnect to pump the rest of the fluid out. I figured since I installed a drain plug in the pan I could just button it up, open the drain and start er up for a minute and fluid would enter the pan and drain. After two start ups no fluid drained out
. So, I just refilled and called it good. Got about six qts of it changed anyway. Would not the TC refill the pan upon restart?
. So, I just refilled and called it good. Got about six qts of it changed anyway. Would not the TC refill the pan upon restart?
Sick 'n Tired
Joined: May 2006
Posts: 2,969
Likes: 47
From: League City, TX
Changed tranny fluid on the 05 screw the other day but I didn't really know which line to disconnect to pump the rest of the fluid out. I figured since I installed a drain plug in the pan I could just button it up, open the drain and start er up for a minute and fluid would enter the pan and drain. After two start ups no fluid drained out. So, I just refilled and called it good. Got about six qts of it changed anyway. Would not the TC refill the pan upon restart?
. So, I just refilled and called it good. Got about six qts of it changed anyway. Would not the TC refill the pan upon restart?
Freshman User
Joined: Nov 2008
Posts: 35
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From: Carson Valley, Nevada
With the pan empty, the pump has no fluid to push through the system - and no lubrication for the trans. Not a good thing. The pump can't pump air so all the remaining fluid stays where it is (inside the TC, passages, valve body, cooler, lines, etc). The idea of flushing through the cooler lines means you have to keep fresh fluid in the pan at all times - at least at the level that keeps the pump suction covered. You need to keep pouring the fresh stuff in as the old stuff pumps out the cooler line.
Simply draining those 6 or so quarts of ATF out of just the pan, without running the engine, isn't a bad way to go. It's easy with a drain plug installed and is how I like to do it. I change it this way every 10k miles, or every other engine oil change, since I'm under there anyway. This at least gets half the fluid replenished on a regular basis and keeps it nice and clean.
Don
Simply draining those 6 or so quarts of ATF out of just the pan, without running the engine, isn't a bad way to go. It's easy with a drain plug installed and is how I like to do it. I change it this way every 10k miles, or every other engine oil change, since I'm under there anyway. This at least gets half the fluid replenished on a regular basis and keeps it nice and clean.
Don
Fleet Mechanic
Joined: Jan 2007
Posts: 1,294
Likes: 18
With the pan empty, the pump has no fluid to push through the system - and no lubrication for the trans. Not a good thing. The pump can't pump air so all the remaining fluid stays where it is (inside the TC, passages, valve body, cooler, lines, etc). The idea of flushing through the cooler lines means you have to keep fresh fluid in the pan at all times - at least at the level that keeps the pump suction covered. You need to keep pouring the fresh stuff in as the old stuff pumps out the cooler line.
Simply draining those 6 or so quarts of ATF out of just the pan, without running the engine, isn't a bad way to go. It's easy with a drain plug installed and is how I like to do it. I change it this way every 10k miles, or every other engine oil change, since I'm under there anyway. This at least gets half the fluid replenished on a regular basis and keeps it nice and clean.
Don
Simply draining those 6 or so quarts of ATF out of just the pan, without running the engine, isn't a bad way to go. It's easy with a drain plug installed and is how I like to do it. I change it this way every 10k miles, or every other engine oil change, since I'm under there anyway. This at least gets half the fluid replenished on a regular basis and keeps it nice and clean.
Don
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