4l80e pump removal trouble. Boost valve removal trouble 4l80e hd2 d

[Chris092183]

I'm installing the 4l80e hd2d kit in my trans. I'm having trouble getting the damn pump off. How does it come off?
I tried using two 7" long bolts that go in place of 2 existing bolt holes then I took a 2x4 cut a hole to slide over the input shaft. Then i drilled some slots for the 7" bolts. The I dea was to crate my own pulling tool but I'm tightening this thing pretty damn tight and the pump isn't budging. I don't want to screw anything up so before I try to tighten it anymore I hope I can get an answer.



Also, for you guys having trouble removing your boost valve:
I drilled a small hole into the top of it then I screwed in a screw and then pulled on the screw to remove it. It seeems not all boost valves will drop out after you remove the snap ring.
Thanks guys

[RedHeartbeat]

you dropped the pan, pulled the filter and removed the lockup solenoid?

FWIW, the outer splined section is pressed into the pump. The center section goes/stays with the internal parts of the transmission. I have a tube that clamps over the stator(outer), a washer welded to the top of the tube, a nut welded to the washer, bolt going through the nut pushing on the center part to pull the pump off.

[Chris092183]

THe pan is off, the filter is out. THe lockup solenoid is still on. I'm not sure where this is located but all the solenoids are still connected.

[RedHeartbeat]

The solenoid mentioned earlier is in a 60e.

[Chris092183]

Awe man haha. yeah IDK I've never even heard of a Lockup solenoid. I'm a beginner with transmissions. All I know is there are a bunch of solenoids in there. Thanks Greg you are a lifesaver. It looks like I need to remove the o ring seal per the second pic you posted. Maybe that is the reason I was tightening the bolts so much without the ppump coming off.
That's a killer idea for you tool. You should patent that! If not do you have pics?

THanks again Greg!

[classic1]

Are the 7 " bolts in the threaded holes in the pump? Not the hole that fastens it to the case , right?
I used to use a modified slide hammer, I think it was a 3/8 bolt welded to a tall nut.

[RedHeartbeat]

yeah, GasGuzzler brought over a genuine GM service tool to pull a pump and it wouldn't do it. I broke out my homemade tool and VIOLA! off it comes. I'm a farmer at heart, if it can't be fixed with a welder or bailing wire it ain't broke.


Yeah, the oring will not lot it come apart, it has to be removed before pulling the pump.

[Chris092183]

Haha lmao. Then you should definately patent your tool! Alright cool, I'm gonna go try removing the o-ring. Just to clarify, th o-ring is the seal that surrounds the input shaft right? I don't even know why i'm asking that question, I don't see any other thing that could be an o-ring haha.

[Chris092183]

Oh yeah, one more thing. Do I need to put a new o-ring on? How about the gasket behind the pump? P/N's?

[RedHeartbeat]

yeah, a new oring and pump gasket are needed IMO. I don't know the PN but your local part store/transmission shop may be able to get them for you. I order them from PATC when I'm doing a build, contained in a master rebuild gasket set. Many places will sell you just the individual gaskets you need. Look in your local yellow pages for transmission supply warehouses.