cannot seperate engine from trans
11-07-2010, 02:12 PM
#1
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cannot seperate engine from trans Timing chain broke in my 06 GTO so today dad and I are trying to pull the engine to assess the damage.
We've got everything off the back of the engine, all wires/bellhousing bolts are out. We can get the engine to come forward about 3/8" but that's it. We can not see a hangup anywhere and the engine is off the dowel pins. This isn't our first time doing this in this car... and it was nowhere near this much of a pain last time.
It seems like the input shaft just doesn't want to let go of the clutch... any ideas what is going on?
We've got everything off the back of the engine, all wires/bellhousing bolts are out. We can get the engine to come forward about 3/8" but that's it. We can not see a hangup anywhere and the engine is off the dowel pins. This isn't our first time doing this in this car... and it was nowhere near this much of a pain last time.
It seems like the input shaft just doesn't want to let go of the clutch... any ideas what is going on?
11-08-2010, 05:22 AM
#6
Hook up the clutch hydraulics, secure the transmission and have a helper hold it, then push down the clutch pedal ***gently***. The slave cyl will usually ease the trans off the bellhousing.
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11-08-2010, 08:54 AM
#8
11-08-2010, 06:06 PM
#10
11-08-2010, 06:09 PM
#12
11-08-2010, 06:13 PM
#13
crap, now I feel like a dick...lol...I got to thinking about the LT1/T56 combo I just replaced...lol old throwout style...sorry, I forgot for a second that it's all hydraulic. I don't recommend hooking up the slave and trying to do it that way, sounds like a recipe for disaster. There's something not right about what you're saying though....I've never had an input shaft stick to the clutch disk....ever....unless there's damage done to it?? Sorry for opening mouth and inserting foot...lol
11-08-2010, 06:19 PM
#14
11-08-2010, 06:45 PM
#15
It almost sounds as if it's just not straight. Because of the tolerances in the disk and input shaft are so close, if it's not perfectly straight it doesn't move. I have seen where a 1/4" movement of the tailend of the trans can cause it to hang up. I would recommend one guy wiggle the tailshaft around and the other hold the bellhousing and try pulling while moving it around. The throwout bearing is attached at the trans, and only rests on the input shaft. Therefore, unless the splines are twisted it should come apart with some movement. If the splines are twisted, the only way to get it off is going to be to try and pry it far enough to take the pressure plate off....which could cause more damage.....but if the timing chain broke, it's probably time for a new clutch anyway.....
11-08-2010, 07:52 PM
#16
It almost sounds as if it's just not straight. Because of the tolerances in the disk and input shaft are so close, if it's not perfectly straight it doesn't move. I have seen where a 1/4" movement of the tailend of the trans can cause it to hang up. I would recommend one guy wiggle the tailshaft around and the other hold the bellhousing and try pulling while moving it around. The throwout bearing is attached at the trans, and only rests on the input shaft. Therefore, unless the splines are twisted it should come apart with some movement. If the splines are twisted, the only way to get it off is going to be to try and pry it far enough to take the pressure plate off....which could cause more damage.....
but if the timing chain broke, it's probably time for a new clutch anyway.....
11-08-2010, 08:10 PM
#17
This is about as funny as guys posting in the Engine forums that the super-tight tolerances of the LS1 require thin engine oil.
The throwout bearing on an LS1-type T56 has no contact whatsoever with the input shaft unless some catastrophic damage has occurred to the shaft or the slave/throwout assembly.
Wow. Just wow.
