How bad is the HG job on a 7.3 IDI?

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
Yes remove the hood. Why are you disconnecting the power steering line(s)? I just pull the whole bracket off of the engine and wire it out of the way. Your AI search on engine pulling mentioned that in the section talking about the support systems in step #4. It did say to use a bungee cord to the frame, but it's basically the same thing. I like to tie it up higher than the frame. If it's against the frame, it's down low and out of sight. That means that it's easier to set the engine down on top of it when you're putting the engine back in.
I also don't know about the bottle jack against the lip of the transmission pan. That seems like a lot of weight on a small area. It looks like there's a good chance of damage. I always use a transmission jack or a floor jack if you don't have a transmission jack. I'll put at block of wood on top of the jack and put that against the pan. That way the weight is spread out over a MUCH larger area. I also don't mean one of those cheap little floor jacks with a head that's about 1.5" across. Use a floor jack with a head that's 5" or 6" across. That will support the wood block better. There will probably be some wiggling as you're putting the engine back in. A small surface area holding up the transmission will be a lot less stable than a larger one.
Going back to the PS, is there a way to remove it without having to pull the pulley? First time doing it and def didn't want to get a kit for that
 

IDIBRONCO

IDIBRONCO
Joined
Feb 5, 2010
Posts
15,051
Reaction score
14,149
Location
edmond, ks
Other than mentioning that you might have to have the exhaust loose in order to remove the inspection cover, I don't know how much more clearly these instructions can get. I don't know about the exhaust for sure. I remember that some trucks didn't have the clearance to remove the cover with the exhaust bolted to the manifolds tightly.
 

mblaney

Full Access Member
Joined
Dec 7, 2012
Posts
1,143
Reaction score
394
Location
Ottawa/Ont/Canada
I used the rolox white (2 inch, 120 grit).

New oil pan and mounts from Rockauto; my pan appeared pretty rusty so I changed it out.
 

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
Other than mentioning that you might have to have the exhaust loose in order to remove the inspection cover, I don't know how much more clearly these instructions can get. I don't know about the exhaust for sure. I remember that some trucks didn't have the clearance to remove the cover with the exhaust bolted to the manifolds tightly.
They're loud and clear. I just didn't know some very basic things like the transmission bolts at the flex plate etc
 

rreegg

IDI n TDI
Supporting Member
Joined
Feb 10, 2022
Posts
692
Reaction score
419
Location
Puget Sound
I picked up a Haynes manual at the local part store (flagship Oreilly in my area). It isn’t perfect but can help fill in procedural and knowledge gaps when needed. For like $25 it’s been helpful but ymmv.
This one doesn’t include diesel engine specific info but was helpful when doing a water pump recently (removing fan clutch and power steering etc).

The info that is most important to me are the torque specs listed. Torque specs still vary depending on source but it’s nice to at least have one reference point but taken with a grain of salt
 

Attachments

  • image.jpg
    image.jpg
    332.2 KB · Views: 6

IDIBRONCO

IDIBRONCO
Joined
Feb 5, 2010
Posts
15,051
Reaction score
14,149
Location
edmond, ks
transmission bolts at the flex plate etc
There aren't any transmission bolts at the flex plate. There's torque convertor nuts, but the only bolts there go into the crankshaft and can't be removed until the convertor and flex plate are separated by several inches.
 

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
There aren't any transmission bolts at the flex plate. There's torque convertor nuts, but the only bolts there go into the crankshaft and can't be removed until the convertor and flex plate are separated by several inches.
Ahh haha man I messed up a lot of sh*t with this. I appreciate your help and everyone else who has helped guide me up till this point. This is the biggest job I will be doing yet. Let me make a list..

1) I didn't remove the flex plate and was wondering why the engine stand plate was making weird contact with the flex plate (might be toast now) I guess moving that out of the way and remounting wont too be bad now.
2) I forgot to detach the exhaust bolts from the passenger side and kept wondering wth was keeping the engine from moving forward when it was on the hoist.
3) I had left the starter attached (without bolts) so it wouldn't get puddled on with the rain from yesterday and starting lifting the engine with that attached..yeah no bueno there.
4) The strap I used to lift the engine was way too long at first and this caused really bad contact between the engine and trans cooler, which is positively gone now..oh well. I learned a lot so far..

Hope there is no permanent damage with my dumb mistakes.

I seem to have a healthy HG leak on both sides.


Propbably have a couple in the front as well

 
Last edited:

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
Alright guys, I got the head out and took some pics, hoping you guys could opine, nothing looked like a smoking gun that would cause a HG leak, my eyes aren't experienced though.

Would this straight edge be suitable to check for warpage? I have feeler gauges, what's the tolerance here? How do the valves look to you guys? Anything stand out? Please see pics link below, I would like to attach them directly to this thread but it always says the file size is too big.



Please let me know if you guys cannot see these pics.
 
Last edited:

IDIBRONCO

IDIBRONCO
Joined
Feb 5, 2010
Posts
15,051
Reaction score
14,149
Location
edmond, ks
Nothing looks odd to me, but it can be hard to tell in pictures.
Looking closer, it does look like there's some nastiness in your cooling system so this would be a good time to flush it out. After the engine's back in and running again.
 
Last edited:

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
Nothing looks odd to me, but it can be hard to tell in pictures.
Looking closer, it does look like there's some nastiness in your cooling system so this would be a good time to flush it out. After the engine's back in and running again.
Will do, any advice one checking for warpage?
 

Nero

HD Diesel nut
Joined
Jan 3, 2022
Posts
4,209
Reaction score
4,793
Location
OR
That straight edge will not be sufficient, it is not machined.

You'll need something like this.

Easiest way to check for flatness is use a machinists straight edge and try to slide a 0.003" feeler blade in. No blade going in = good.

As for the previous leakage, did it have the stamped metal gaskets? If it did, I blame them. They aren't that good at sealing, thus why the new gaskets are graphite.


Edit,

Saw your photos. Those are definitely stamped gaskets. Clean er up and put er back together im sure she'll be fine.
 
As an Amazon Associate we earn from qualifying purchases.

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
That straight edge will not be sufficient, it is not machined.

You'll need something like this.

Easiest way to check for flatness is use a machinists straight edge and try to slide a 0.003" feeler blade in. No blade going in = good.

As for the previous leakage, did it have the stamped metal gaskets? If it did, I blame them. They aren't that good at sealing, thus why the new gaskets are graphite.


Edit,

Saw your photos. Those are definitely stamped gaskets. Clean er up and put er back together im sure she'll be fine.
Thanks, the straight edge I posted says it's "precision milled" and made for checking straightness on cylinder heads. What's the difference?
 
As an Amazon Associate we earn from qualifying purchases.

Nero

HD Diesel nut
Joined
Jan 3, 2022
Posts
4,209
Reaction score
4,793
Location
OR
The one at home depot doesnt have the sharp edge on it that a machinists straight edge has. With rounded corners a feeler blade can push it up easier rather than more like a go/no go gauge.

Heres what mine looks like. Notice, not a ruler, plain metal, its only supposed to be used as a machined straight edge.
You must be registered for see images attach
 

steelholder

Full Access Member
Joined
Aug 5, 2025
Posts
120
Reaction score
24
Location
Up and away
A couple questions-

Trying to get this cooler reassembled but it's not cooperating any other tips here? Used grease but no go.

Messed this part up while I was removing the engine. It's the trans cooler right? I haven't been able to find any other one online that matches its size, roughly 15 in x 24 in. Any recommendations on a replacement?
 

Forum statistics

Threads
92,992
Posts
1,155,907
Members
26,568
Latest member
Weirdo

Members online

Top