BAC Forum

General Boards => Technical Support => Topic started by: Al Prust on January 22, 2016, 10:08:14 PM

Title: A/R Numbers
Post by: Al Prust on January 22, 2016, 10:08:14 PM

What is an A/R number, and where would I look on my 1991 Contessa, VIN number 46GED1513M1051438, to find it?

Title: Re: A/R Numbers
Post by: Gerald Farris on January 22, 2016, 10:57:54 PM

Al,
I am not familiar with the term A/R number. In what context is it used?

Gerald

Title: Re: A/R Numbers
Post by: Joel Ashley on January 22, 2016, 11:36:32 PM

Maybe area/radius ratio for a turbo housing? 

Title: Re: A/R Numbers
Post by: Tom and Pam Brown on January 23, 2016, 12:49:41 AM

If you have a 3208 Cat It might mean arrangement number, that would be on the engine.  If not I have no clue.

Title: Re: A/R Numbers
Post by: David T. Richelderfer on January 23, 2016, 01:47:02 AM

Who is asking you for an A/R number?  Ask them/him/her what it means.

Title: Re: A/R Numbers
Post by: Fred Brooks on January 23, 2016, 01:14:13 PM

                Hi Guys,

       It refers to the build sheet that Caterpillar documented when they assembled the engine. Contact Dave Atherton for more details. Regards Fred

Title: Re: A/R Numbers
Post by: Dave Atherton on January 23, 2016, 05:24:23 PM

Good morning, the term A/R number is a build of engines, transmissions etc. with Caterpillar
equipment. It use to be stamped on all the engine metal ID Tags. Than things were changed
with engine ID. with just a stick on tag with engine S/N number and same number is stamped
on engine block. The engine s/n and a/r number will always get your build of your engine correct
part made for that s/n build. ( just using engine s/n for some main parts, there may be 7 or
8 part made for engine s/n  to choose from and all will fit in different ways.)
For Beaver members I have provided many with the build date of there engines , information
and the A/R number, many times to correctly answer post on engine problems,  I always ask
what is your engine s/n number. This way I can provide correct information and part numbers
pertaining problem. To many answers again that I provide tech support many answers will
depend on what the engine S/N number. Dave Atherton Retired Cat Mechanic

Title: Re: A/R Numbers
Post by: Al Prust on February 03, 2016, 08:18:14 PM

Quote from: Al Prust on January 22, 2016, 10:08:14 PM

What is an A/R number, and where would I look on my 1991 Contessa, VIN number 46GED1513M1051438, to find it?

Thanks Dave and Fred for the info.  Although I've owned my 1991 Beaver Contessa 36 & 1/2 foot motorhome with the Coronet floor plan since Feb 2000 - bought it thru Scott Dyson at Destinations RV - and have only had CAT engine shops service the 250 hp, 3116 turbocharged engine. I only heard about an A/R number in the last month or so, and I'm not sure where I did so.  I've been doing the rving thing since 1983 and read everything I come across concerning rving in general and motorhomes in particular, so I probably read about it in a magazine maintenance forum from a maintenance tech providing an answer to a letter. 

Title: Re: A/R Numbers
Post by: Dave Atherton on February 04, 2016, 02:30:33 AM

Al Prust, what you have 3116 is the entry along with the 3126 both mechanical engines.
This is Caterpillar entry into electronic engines with 3126, the heui injection system.
Note: with the 3116 mechanical engine requires special tooling to set injectors and valves
and fuel rack fuel timing. The A/R number is located on engine data tag on valve cover along
with injector fuel setting and rack setting, intake & exhaust valve settings info on tag.
If you have problems, I have all the special tooling for this 3116 engine.
Dave Atherton Retired Cat Mechanic