AT1545 thread

[cadillackid]

I still have my old 545 with deep pan in my garage. I can pull it off if you want it, I don't think I hurt it doing the take off.
I made new trans lines with braided steel #10 AN. It's rated to over 1000 psi. Ordered what I needed from summit and grainger . They are 37 degree flare at the hose and 10 O ring boss into the 545.
Christopher

[turf]

i measured both transmissions from the bell house to the end of the adapter plate.

the 1545 is about 1/2" - 9/16ths longer with the adapter.

[cadillackid]

so now measure from a straightedge across the engine flange down to the flexplate.. and to the edge of the torque converter hub (on the engine)..

torque converters have room to push and pull.. .. and again make sure that the converter is fully seated on the 1545.. a couple revolutions and jiggling a bit to be sure..
-Christopher

[cadillackid]

also should mention when you are doing your measurements to the converter from bell (on the transmissions)... to top and bottom and take an average.,. the converter can sag down when the trans sitting on the ground and not piloted.

-Christopher

[turf]

it seems about an inch off.






i would be tempted to go without the ring, but the hole won't line up to the flexplate. i think i need like a 1/4" adapter.

[turf]

idk

the specs from this book, clearly say it sticks out an inch more.

http://www.waghornswood.net.nz/Manua...nsmissions.pdf

check out section 3-2, page 17

and page 26, table 4-1

what do i do?


not that it shows any measurements, but this looks like what i need.
http://www.ebay.com/itm/New-Cummins-...3D182506765559

or i could mark and drill the flexplate for the new holes

[Booyah45828]

That looks like it would work. Same part, but this guy has a phone # you could call to verify measurements New Cummins Adapter Plate MPN #3916223 Ford #F3HZ-6A369-B | eBay . If I have time later today, I'll look that up and see what the original usage was, and see if there are any prints for it.

Have you measured the pilot on the torque converter and compared that to the hole in the crank/flywheel? That's another area to check for fitment

[cadillackid]

sure looks like the ticket.. I never read the SPEC sheets on these.. I spent all my time reading up on the 1000 specs..
this is good info.. the only other method i could think of was a spacer against the SAE3 housing on the engine..

I like the idea of that ring better if it will fit.. make sure the bolt heads wont ineterfere.
-Christopher

[turf]

the original torque converter measures 41mm from the backplate. and adapter measures another 41mm, giving me a total of 82mm that fit prior.

the new torque converter measures 69mm from the backplate. so to get the same distance as before.... i need a spacer thats about 12-13 mm (1/2").

i messaged the seller on the one i linked to on ebay and he replied back that that spacer is about 1/4" (6mm) thick.

i'll go back and figure exactly what my tolerance is. i think im short now by about a 1/4" if i get that ford torque adapter.

1/4" spacers?
cut the ring off the one i have now + the ford adapter?

still scratching my head

Dave

edit - the range of tolerance looks like between 81mm total - 85mm total.
I'm at 69mm with the converter, 75mm with the ford adapter. 110mm like it is now.

[cadillackid]

theres normally quite a bit of room.. when you pull a transmission out you often shove the converter back off the pilot by a 1/4 to 1/2 inch.. I know that in my case with my 1000 that there was at least a 1/4 to 3/8 inch of play.. as my adapter ring has studs on it (with nuts for the engine side).. when I installed the 1000 I only had a few threads stuck through and rotated my ewngine around 3X total to draw it in and properly tighten it..

so you SHOULD be 1/4 short or so.. if you look at the difference on old AT545 original and actual depth from bolt boss on ring to flexplate hole you'll likely find a little room there...
-Christopher

[cadillackid]

I should say with converter pushed all the way back against transmission, distance from bell to bolt boss.. and then distance from mount service to flexplate hole on the engine side you should be a bit short..
-Christopher

[Booyah45828]

https://www.heavytruckparts.net/deta...=1&searchnum=2 call these guys, see what the thickness is for this one.

[turf]

that link was false. i called. they haven't sold truck parts in a long time, he wasn't sure why he still gets calls for them.

i've got a call into my truck parts guy, waiting to see if he can find me one.

[Booyah45828]

Did they answer as kadingers? I'm thinking the number on the ad might be wrong. Try this 715-643-4211.

The reason I think this is the part you need is because it came off of a 3116 cat with the allison. Which is the same engine that the 1545 came behind in the m35a3.

I doubt you'll find a cummins # that will work unless the parts guy is willing to go through some hoops to find it for you.

[cadillackid]

that ebay link was bad too?

[turf]

yes that's the number i tried. call the first number on the website and you win a carribean cruise!

kadingers is out of the truck part business. auto recyclers only.

good call on the cat difference. i saw too that the military use was cat. i will investigate that a bit more.

[cadillackid]

oh I didnt see a phone number in the Ebay listing, just a listing and buy it now price./

[turf]

Originally Posted by cadillackid

that ebay link was bad too?

no, they replied saying that cummins / ford adapter was a 1/4" thick. all the other rings that look like they'll work seem to have that same ford part number.

not sure about the cost, but i could probably go down the the local machine shop and have them cnc me a 1/4" spacer ring. is that stupid? 1/4" spacer + ford adapter?

[Booyah45828]

That idea would probably work. But if you could find something that didn't need spacers you'd be better off.

[cadillackid]

I thought you needed 1/4"// im confused.. remember the TC doesnt sit absolutely dlammed back against the trans.. when you take one apart there is nornally 1/4 - 1/2" of push back on the TCC toward the trans.. ive never put one together that the TCC was not pulled out that slight bit..

if you set your old converter in 100% and measure the distances you will find there is a small but of play in forward / back movement of that one too against the engine plate. these measurements are difficuklt because the converters "sag" slightly when sitting horizontal. so to get good measurements you pick it up to level and push it back all the way.. hold it level and have someone measure.. I did it with straightedges clamped together in a U-shape and layed across on the trans end... im sure theres a proiper tool for it...
-Christopher