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Actually now that you mention it, I am not sure if I did the bottom screws, for sure I did the 6 or so at the top and I ordered new turbo bolts because I felt they were a little rounded…I really was looking for a reason to open the turbo, but I agree that need to double-check the tightening...

The way I understood it, is pouring water in the turbo input and watch if it comes out thru the oil feeds, and it shouldn’t,

I am about to open the Turbo to change the snowman and the other seal, anything else I should be on the lookout for? I will also do a cartridge leak test. Is that much oil coming out from the Turbo base and indication of some bigger issues than just seals?

Got it! How about for the geared hubs, geared fan, differentials and transmission?

So I ran the truck today to test the valve cover leaks, four are fixed, there is one left, toughest one behind the alternator, working on it. I went just up and down the street and when going up hill or accelerating a little, the oil comes flowing, not leaking, from the bottom of the turbo, It...

I did hear about the synthetic potential risk for leaks and I also did a lot of research :) because I wanted to use the best technology. I ended up using synthetic on another REV HMMWV that had last oil change around 2013 (based on the oil filter date and mileage) so it sat for a while and...

Yes, there is so much other open space around these two dust covers where stuff can get inside, maybe the rubber mentioned above is to prevent rattling as it’s metal on metal and a relatively large cavity so maybe can resonate. I am just speculating…nice touch if that’s indeed the case :)...

Ok, I am about to test if the valve cover leakage stopped with the engine running and while cleaning the two cover pieces (one large and one smaller extension) noticed that some of the gunk seemed thicker, almost like dried RTV residue, but I am not sure because there was no resistance when I...

I agree, especially with synthetics, maybe should be closer to 36k or 48k miles?

Found one more, #3 in the blower unit: EDIT: Removed one other conversation, which was included by mistake.

Wow, it looks very good for raptor lining! It's hard to tell from the pictures, but it seems like the doghouse and seat base were left in CARC? (the surface looks smoother?) Or it's all raptor lining?

I like your interior, nice pictures. Did the tan interior come from the factory or was it green and you/ someone else did re-paint it? I am thinking to do it on one of mine :)

I was hoping is one of those, thank you!

I have a separate question and didn’t want to create a new thread for it…does anyone know where the cabin fan blower (on passenger side) circuit breaker is physically located? I found it on the schematic (it’s on page 2 or 3) but not on the parts list under that name (I don’t recall the exact...

I use a combination of TMs plus the H1 maintenance info, which has some of the intervals clearly specified: Here is a link to the whole manual (there may newer revisions available): https://www.4x4us.net/documents/hummer_h1_manuel_utilisateur.pdf Some of the capacities may not be correct...

I know some will disagree, but as you can see not everything is covered in the TMs 😆

In the manual they forgot to also include the elbow procedure 😆, otherwise it’s good to go. The guy in the video is hilarious! The whole setup and everything else…oh, I forgot, it has to be in park…lol

I didn’t have oil coming out the oil fill tube after changing the oil, only vapor, but there is some oil from before in the intake duct, and I presume in the turbo as there is small seep at the top and perhaps that’s what triggered the engine being rebuilt.

I think you are again, right on the money! Because the valve cover leak was bigger after I changed the oil (went to areas where it wasn’t before) which made me think maybe it didn’t get many hours of running after the rebuild, and just tightening the cover bolts stopped the leaking. Also the...

Yes sir! :) Sounds like a good plan, thank you!