few questions on top end work

[84cucv1ton]

good morning. My cousin is now 15. Ended up with the M1009 for him. Trucks in great shape. Got a pretty cheap. Missing a few things and the motor needed work. This weekend I was going to help my cousin with the top end. Guess he didn't feel like waiting. He did the head gaskets, ARP studs, new injection pump, new injectors, glow plugs, belts and fan clutch.

three things I'm not sure about. when he was cleaning the gasket material he just scraped it and that was it. I always used the 3M wheels.

Said he spilled diesel fuel on the one head gasket and intake gasket.. I thought that would mean gasket needs to be replaced even if they are new are no longer clean. If I'm wrong please let me know

Here's the big one. The torque wrench he used is older than me. From what his father said has not been used in 20 years.. I believe a torque wrench needs to be calibrated. right?

It is together. Ready to turn the Key. want to make sure everything's okay before we turn the key. I don't know if I'm making a big deal out of nothing or what.. the torque wrench is what I'm really wondering about. Let me know you guys think . Thanks

 

[donalloy1]

To ensure accuracy it should be calibrated from time to time. An old Machinist taught me a long time ago. Make sure to unload your Torque Wrench when finished using. People have a nasty habbit of puting them away loaded. That WILL make them innacurate! So, I always unload completely and set on zero then put away. Ready for next job!

Lord only knows how yours has been taking care of. I would suspect it is out of tolerance. Do not trust it!

 

[84cucv1ton]

OK ill take it back apart and double check..

any chance you know about the gaskets? should they be replaced you think?

 

[84cucv1ton]

anyone else

 

[chevyCUCV]

Did he clean the threads and then use sealer on the studs? That was my biggest fear when doing hg.
And i spent hours cleaning my heads, so just scraping sounds iffy to me

I wouldnt feel good with diesel on the gasket either, but that might be personal preference, i have no real experience expect for doing mine.

 

[84cucv1ton]

clean the threads and use sealer on the studs.. never knew you needed to do that.. pretty sure we taking it back apart... checked the torque with my friends new snapon.. all the intake bolts were lose..

 

[ryan77]

A pro mechanic has his torque wrenches re calibrated at least once a year!! The heads should be perfectly clean, using a die grinder with wheels can also ruin the motor! You cant get any of that grit in the motor or u will ruin it! Trust me i know. I would get new felpro gaskets and redo it, clean the heads and use brake cleaner to final clean them. Run a tap down all the bolt holes and use sealer or 3m weattherstrip adhesive on the head bolts.

 

[Cucvnut]

how do you re calibrate a torque wrench ?>

 

[Warthog]

how do you re calibrate a torque wrench ?>

Send it to a shop that calibrates them. In the aviation field you have to do this yearly and provide documentation proving it was done.

To find a shop contact a aircraft mechanic and get the number.

 

[ryan77]

The snap on rep or cornwell, etc sales guy would send it out! Usually let u use one while yours is out! There's also places online you can send it to. Or this place
www.teamtorque.com/torque_wrench.html

 

[84cucv1ton]

using my friends torque wrench. My cousin is out of work before me. He's going to start taking it apart. Have the new gaskets on order.
Didn't know about cleaning the threads and putting sealant on the head bolts.. That'll be done to

Thanks maybe if I'm lucky have done after work

 

[84cucv1ton]

no need to worry about the fuel spilled on the gasket for the intake right? The head gasket I could see it being a problem.

 

[JGBallew]

OK ill take it back apart and double check..

any chance you know about the gaskets? should they be replaced you think?

Some gaskets, you had to soak in light oil or kerosene before use, but I doubt that is the case with the head gaskets on the 6.2.

Also, the torque wrench. Was it one of those old parallel bar wrenches? A dial indication or a click break?

The old parallel bar wrenches are okay for wheel nuts and steam engines, and that's about it. The dial indicating will get out of tune with a sharp stare and a nasty word. The click break wrenches seem to get used as breaker-bars by too many of their owners.

Use a calibrated wrench and recheck ALL the fasteners.

 

[84cucv1ton]

one i have a now is a click break... will be taring it down soon

 

[84cucv1ton]

got it apart... glad it is. make sure its all right

 

[84cucv1ton]

why do you need to clean the threads and put sealant on the head bolts? didnt hear that before

 

[ryan77]

You clean the threds with a tap for a more accurate torque reading! Sealant is used to prevent oil or coolant seeping up bolts!

 

[84cucv1ton]

got it thanks