D6 stuck engine

[beaver-flat]

Hi, I finally got the old D6 in the shop and pulled the head off. The #3 cylinder was full of water, so I dipped it out and wiped it dry. The sleeve looks pretty pitted. Where do I go from here? Its a '39 D6-2h with the D6600 engine. Whats involved in pulling the pan? Just looking at it, the stabilizer spring needs to be removed and tractor supported?
I'm assuming I have to get the pan off and the rods loose from the crank, drive pistons out, and replace sleeves/rings.

[Old Magnet]

Hello beaver-flat,
I'm really not all that familiar with the RD-6 but do have some information.
It probably would be best if you could link up with someone that has this model. I know that over the years there have been several owners posting on the BB's but it seems they have become disenchanted and left a long time ago. I don't know if there are any on ACME or not. From memory I believe Dave from Woodburn Or. has/had one, RD6Bill also.

The 2HD6 with the D6600 engine was a 5-3/4 in. bore by 8 in. stroke engine.
This bore/stroke combination was fairly common and is shared by the D342 stationary engine, the D339 (D7's), D8800 (early D7's), the D13000 (D8's) and the D17000 (stationary, railroad, marine and some other equipment applications).
I am thinking there may be shared parts from the more varied and later engines that will work on the 2H. I did look up the liner part number for the 2H and in the 2H1-2H3247 parts book it is a 2B3712. I looked in the 1H D8 (D13000) parts book (1H6852-1H999) and it is a different number. I don't believe I have all the matching era parts book to compare but I will take a look.

Rings should not be a problem as most anything is available by bore size.

As far as pan removal your observation sounds about right. Jack the tractor up sky high to clear the dropped spring and cross member and maneuver out past the oil pump. Oil pump or at least the suction bell may be removable through side cover in pan to get more clearance.

[beaver-flat]

thanks OM, I'll update as I get deeper into it.

[Willie]

Beaver: Dont get your engine confused . If yours is 1939 or has ser.no. above 2H5144 you have a D6 not a RD6 the number went earlier but the breaking pont ser. no. is unknown by ALL and the D339&D342 are engines built 25yrs later with diff designs and parts are not remotely close. Most all cly parts are interchangalbe with any 8800,13000&17000 engine most the changes in these engines were in the fuel system, filters ,enjection pumps, ect You should have problems finding part there are lots of them sittina round and not very desireale.That particular cyl being used in the RD6,D6,RD7,RD8&D8 along with 10s of 1000s of gensets and stat.engines built it is the most common Caterpillar engine part ever built

[Old Magnet]

Willie,
Do you have parts book for the 39 model (sr # 6139-7370) so's he can get the liner part # and be able to do some checking.

[SpragueM]

I am also going thru a D6600 engine out of a 1939 model 11 grader. Liners are available thru Regal @ 47.74 each. After trying to pull the stuck pistons thru the side covers, I pulled the entire engine. Glad I did as the cam was also stuck as was the oil pump. Keep this in mind.
Here's a link to a few pictures of my project. http://www.antiquecaterpillar.net/ACF_v2/showthread.php?t=6304&highlight=d6600


Matt

[Willie]

Om; I tried posting the page but it did'nt happen imagine that. Yes i have the book I have every parts book for everything that Cat made from their start thru 1925-1960. part no. for liner-2B6463,

[SpragueM]

The part number that I gave for the Regal cross reference was 2b3712.

Matt

[Old Magnet]

Are you sure on that number? It doesn't match anything I show for the D6600, D8800 or D13000.

[Old Magnet]

Willie,
That is the gasket number.

[Willie]

OM ; my eyes must be crossed I gave head gasket no. the correct is the 2B3712 for ser. no. 2H1-2H8966

[Willie]

I just said I had the books didnt say I knew how to read them

[Old Magnet]

OK,
That gives him the D13000 up to 1940 when the liner # changed to 8B375 plus the D6600 and D8800 series to work with.

[SpragueM]

So do the 6600, 8800 and 13000 share the same liner, piston and rings? Nobody has confirmed this for me. D13000 parts are generally listed. But rarely D6600.

Or do they only share with the D13000 up to 1940?

I do not have the books to cross reference the part numbers. Hint hint.

Matt

[Willie]

There are diff parts no. for dif. cyl. parts piston orig 3B9737 then 5B1667 then6B4011 they are just upgrades like ristpin keepers and such but all are interchangable

[SJ]

Cat changes part numbers about as often as the sun comes up but a guy either needs an NPR book or it,s on fische today at the dealer.Lots of later parts & different part numbers do supersede the old numbers but the new parts do work in place of the earlier part numbers.In question the dealer should be able to give you the right info. if you get the parts man that knows whats going on or even the service dept. head (shop foreman) should help.

[Willie]

The cyl parts from any 5E or 2H-RD6 or D6 any 5E or 9G-RD7 or D7 any 5E or 1H-RD8 or D8 and 6600,8800,13000,17000 stationary eng., genset, marine or locomotive engine. Lots of diff parts numbers but all interchangable

[Old Magnet]

Yes, I see lots of part number changes, what if any difference there is would be hard to determine. I think if you keep things in matched sets you'd be ok. I would be a little leary of the liner change. Could be a change in the machining of the block to receive them. Anybody know for sure?

[Willie]

Yes SJ but in this case the actull part is diff, one change is the keepers for ristpin from the plates that held them in to a snap ring, but it fits in same sleeve and uses same pin

[beaver-flat]

thanks for the info! It is a D6-2h s/n 7640. I do have an original parts book for it. My biggest question is how to get the oil pan off. OM pretty well confirmed what I was thinking. remove the spring retainer bracket and jack tractor high enough so pan clears spring. Plan on doing this next week on my next days off. 1 and 2 cylinders look pretty good, just #3 had the water in it. Will replace all 3 liners when I get it apart.:)

[Old Magnet]

I show Sr # 7371 - 8957 as 1940 production.

[beaver-flat]

thanks, hey spraguem, I live about an hour south of you near Ellsworth...small world

[SJ]

No you don,t just use later parts in older engines but you must go by the old part number in the NPR & it tells you what if any new part replaces the old number.If there is no change of number then the same older part is whats used.Sometimes a replacement part calls for another part or two to go with the new part so it makes them compatable to the older engine or whatever current engine you would be working on. What happens on here little if anybody on here has NPRs or fische to run down all these changes (part numbers)so gets confusing for most average people.When I was working a portion of your time was used in ordering parts & other info. needed to complete a job correctly.