BAC Forum

General Boards => Technical Support => Topic started by: Adam Hicklin on August 08, 2019, 05:35:16 PM

Title: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 08, 2019, 05:35:16 PM
Where can the engine serial number be found on a C-12?
Title: Re: Semi urgent. Engine serial number
Post by: Mike Shumack on August 08, 2019, 05:44:28 PM
The ID tag is on the front cover.
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 08, 2019, 06:07:48 PM
Thanks Mike.  The only tag on the front of mine lists patent info (first picture)

Second picture is the only other number I could find.  Is that it?  Maybe I was looking for something more permanent
Title: Re: Semi urgent. Engine serial number
Post by: Jerry Emert on August 08, 2019, 07:30:50 PM
Adam, do you have a build sheet on the back of a cabinet door or in the closet?
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 08, 2019, 07:49:16 PM
No I don’t Jerry.  I think the white tag is it.  It’s the same number I found on some service docs from CAT.  I was expecting something more substantial, I guess. 
Title: Re: Semi urgent. Engine serial number
Post by: Mike Shumack on August 08, 2019, 08:51:14 PM
Jerry, does your C12 have a serial tag like this (from my C13) on the front cover?
I'm thinking Adam's serial/ID tag peeled off or was painted over.
Title: Re: Semi urgent. Engine serial number
Post by: Joel Ashley on August 08, 2019, 09:15:57 PM
Do you have any previous service receipt documents?  Service entities often print both the coach and engine serial nos. on their service order/invoice.
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 08, 2019, 11:03:39 PM
I was looking for something like mikes picture.  Nothing like that on the engine.  Joel, the reference I found on previous service docs was the same number as the white tag pictured.  I called CAT and they were able to acces records with that number, so I guess that’s it. 
Title: Re: Semi urgent. Engine serial number
Post by: Dave Atherton on August 09, 2019, 04:50:29 AM
Gentleman, subject engine S/N number  when in question about engine number it is
Stamped to engine block behind the engine ECM ( top rear corner ). Using engine serial number
To find build spec’s , date of build and date of test on engine. A serial number is made up for engine along with called a A/R arrangement number. and build sheet etc. Dave Atherton Retired Cat Mechanic
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 09, 2019, 05:00:30 AM
Top rear corner on exhaust side or other side?  I have no idea what the ECM looks like. 
Title: Re: Semi urgent. Engine serial number
Post by: Mike Shumack on August 09, 2019, 10:28:19 AM
ECM is next to fuel filter (curb side of coach)
Title: Re: Semi urgent. Engine serial number
Post by: Steve Huber Co-Admin on August 10, 2019, 04:38:16 AM
Adam,
The Dave Atherton seminar wrteup has pics that show the location of the ECM. It's a "sticky" on the Technical Board.
Steve
http://beaveramb.org/forum/index.php/topic,7495.0.html
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 10, 2019, 05:07:24 AM
Thanks Steve.  If it’s behind the ECM, I can’t see it.  I’ve used mirrors, borescopes, lights, all over that engine.  I don’t see a data plate anywhere.  Luckily, the white sticker in my picture is the serial number.  It was probably stuck on in production for the bar code, and stayed. 
Title: Re: Semi urgent. Engine serial number
Post by: Dave Atherton on August 11, 2019, 12:18:20 PM
Adam, good morning I will have time today to lookup the number on that tag and just maybe it
Will be your engine S/N number. Going back to the S/N is stamped into the block behind the ECM
But the ECM 4 bolts have to be removed and ECZm loose than you will see by the top right bolt
hole on flat the number stamped into block. Been traveling to Minot and will have time this afternoon
to look up the S/N number on that tag ( note if that is a valid number it will pull up all information
and the engine Arrangement number for your engine. ) . The stamped number behind ECM is a
backup number in case all the paper tag are missing or cannot be read. Need Email address
Dave Atherton Retired Cat Mechanic
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 11, 2019, 04:27:07 PM
Thanks Dave.  adammanager@gmail.com is the email. 
Title: Re: Semi urgent. Engine serial number
Post by: Dave Atherton on August 11, 2019, 11:53:08 PM
Adam,  pulled up the tag you posted ( 9NS08290 ) it is a valid Caterpillar S/N number for your
Engine. Information build date 1998-04-22,  Test date 1988-04-22,  shipped date 1998-04-27
Arrangement Number for 9NS08290  156-2049.  Engine HP. 425. This is your engine Serial Number
and note: anytime you order any Caterpillar parts be sure to use the engine S/N 9NS08290
and A/R number 156-2049 and you will get all correct parts off engine build sheet.
Dave Atherton Retired Cat Mechanic
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 12, 2019, 12:55:09 AM
Thanks so. I hope Dave.  I’m sure that will save me some headaches going forward. I appreciate your help.

If I replace my fuel line from the tank to the primary, you suggested a 5/8 air line with brass fittings.  CAT Parts recommended a standard fuel line.  By plastic air line do you mean that hard plastic like they use for the air bags, or the brake air line?  How crucial is that fuel line material.  I’ll need something fairly flexible to snake from the tank to the engine compartment.  Still not sure how I’ll do that.  Have someone coming this week to see if a repair is possible.  If not, new line it is. 

Thanks again.
Title: Re: Semi urgent. Engine serial number
Post by: Dave Atherton on August 12, 2019, 02:29:43 AM
Adam, on the newer motorhomes they ( mfg ) used plastic hose . Such as air line used for the air brakes. My suggestion I would get 50 feet of 5/8  air line that will come in a roll. Than make note
of what you will need in brass air line fittings of which two fittings wil need one end for pipe thread
and other end to air line . Note a brass air line fitting has a hex nut that goes on air line first , than
A brass farrel
 that slides on outside of plastic tube , than a steel insert that goes into the plastic
tube. Step 2 attach the pipe fitting end of brass fitting into the water/ fuel filter intake end, last
Take plastic air line with hex nut and attach to brass fitting body.  Repeat the same for pickup
tube in center of fuel tank. Look over the fuel tank because you will need to drop the fuel tank
To get at the pickup tube. Last the brass air fittings will make a air tight connection that will not
Allow entry of air. Plastic hose is rated for 250 psi and up. Be sure that you install hex nut , Farrell
than steel insert into center of plastic hose.  Last plastic tubing is flexible but do not kick or sharp
bend in tubing or hose on install. Check with Caterpillar on price of there fuel hose and nessary fitting
It might surprise you on cost and go with them. Recheck on how you are going to drop fuel tank
of which will need a helper. Might want to check what Cat will charge to install hose
Dave Atherton Retired Cat Mechanic
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 14, 2019, 10:31:22 PM
Thanks Dave.  So if I go with the air hose, I'll need to change the fittings on the tank and the Primary filter?  They have flare fittings now.
Title: Re: Semi urgent. Engine serial number
Post by: Mike Shumack on August 15, 2019, 12:29:43 AM
It's easy to change the fittings on the filter (either NTP threads or ORB) then use a standers compression fitting on the new fuel line.
Or you could use an adapter (a JIC 37-degree swivel end to NTP) and the thread the compression fitting into that adapter. I would try to use the fewest fittings/adapters possible though where possible. Your choice of fittings depends on which hose type you use.

I just EDITED this post to add - if you use the Nylon Air Brake tubing for Diesel Fuel, it should be the Type B tubing. Parker makes two nylon Fuel lines (pasted below). If your going to go through all the trouble to replace the entire line (tank to engine) I would suggest you go with the high temp line or a tubing with reinforcement - for longevity.




Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 16, 2019, 05:08:25 AM
Thanks Mike.  Changing the fitting at the filter is no problem.  I think it will be impossible to change the flare elbow that comes out of the tank though.  I’m Trying to do this without dropping the tank (it’s full).  Will need to use an adapter there. 
Title: Re: Semi urgent. Engine serial number
Post by: Jim Nichols on August 16, 2019, 01:19:07 PM
You'll have to transfer  the fuel to a drum and drop the tank as there is no other way. When Dave Atherton was younger he helped me drop the the tank onto the axle and that gave us enough room to pull the pickup tube out. Fortunate for us the tank was only 1/3 full. Gosh I think we did that 6 or 7 years ago
Title: Re: Semi urgent. Engine serial number
Post by: Adam Hicklin on August 16, 2019, 04:01:18 PM
Jim, the fuel line on my tank attaches to the fitting at the top of the front vertical surface of the tank. There’s just enough room to attach the connector to the fitting, but not enough room to remove and replace the flare fitting coming out of the tank.