The engine ECM on your excavator, loader, dozer or grader is the same 70-pin ADEM III we fix on trucks every day. Same lane, same price: 3 to 5 days on the bench, $525 flat. Ship it in from anywhere.
Failed flash recovery available.
On every Cat 70-pin ECM we repair, we upgrade the injector drivers for durability and replace the internal battery.
Sale through October 31: $525 on every Cat 70-pin repair (regularly $745). 40-pin and 120-pin repairs stay $745.
You do not need the part number to get started. Count the plugs.
That is the ADEM III engine ECM, used on Cat machines and engines from about 1998 to 2006. It is in our fast lane at 3 to 5 days on the bench.
The part number is printed on a label on most of these. If there is no label, look for numbers stamped into the housing. No numbers at all? Send it anyway with your machine model and engine serial number, and we identify it on the bench.
That is the later ADEM A4. We repair those too, 15 to 30 days right now. Start a repair and pick ADEM A4.
That is the older ADEM II. We repair those too, 15 to 30 days right now, $745 with the $350 bench fee credited. Most 40-pin units have no label: the part number is stamped into the housing, so send a photo of the stamped numbers or start a repair and pick ADEM II. If you need it sooner, ask about an exchange.
What you see: the batteries went dead on the machine, or it got jump started, and now it cranks and won't fire, or it won't do anything at all. It ran fine before the batteries died.
What we do: check the ECM fuses and battery cables first. If those are good, send the ECM in. We get it powering up again and test it on the bench before it goes back.
What you see: one hole down on the cutout test, a miss under load, low power. You replaced the injector and it is still there.
What we do: we repair the ECM and test every injector channel on the bench before it ships.
What you see: the machine runs but the service tool will not talk to the engine ECM.
What we do: we restore communication on the bench so the ECM can be read again.
What you see: dead ECM after a jump, a battery swap, or welding on the machine. Sometimes it is intermittent first.
What we do: we repair it at the component level and test it under load before it goes back.
Don't see your exact symptom? Send it in anyway. We bench-test every unit before we tell you what's going on, and if we fix it the diagnostic cost you nothing.
These are the ADEM III engine ECM part numbers and where Cat lists them. Cat used more than one ECM on some of these models over the years, so go by the plugs: two 70-pin plugs means it is one of these.
| ECM part number | Cat Reman number | Where Cat lists it |
|---|---|---|
| 240-5304, 322-3603, 348-2378 | 10R-4092, 10R-8982 | 322C and 325C excavators, M325C MH; 938G II, 950G II, 962G II, 966G II, 972G II, 980G, 980G II and 988G wheel loaders; 120H, 135H, 140H, 143H, 160H, 163H, 14H and 16H motor graders; 725, 730, 735 and 740 articulated trucks; 814F, 824C, 824G, 824G II and 834G wheel dozers; 815F, 816F, 825C, 825G II, 826C, 826G, 826G II and 836G compactors; 651B and 657B scrapers; IT38G II and IT62G II; TK1051; Challenger MT835, MT845, MT855 and MT865; 3126B, C-10, C-12, C-15 and C-16 industrial engines; C18 generator set; C-12 and C18 marine |
| 179-9850 | 10R-8982 | 3126B machines: 322C and 325C excavators, M325C MH, 938G II, 950G II, 962G II and 966G II wheel loaders, IT62G II |
| 240-5307, 348-2379, 322-3604, 209-9587 | 10R-4090 | D5N, D6N and D7R II track-type tractors; 572R II pipelayer; 725, 730, 735 and 740 articulated trucks; 140H, 143H, 160H, 163H, 14H and 16H motor graders; 938G II, 950G II, 962G II, 966G II and 972G II wheel loaders; IT38G II and IT62G II; C-10 and C-12 industrial engines |
| 206-2700, 322-3602, 348-2377, 240-5303 | 10R-3571, 10R-7984, 10R-7985, 10R-7987 | D5N and D6N track-type tractors; 561N pipelayer; 953C and 963C track loaders; 3126B and C-12 generator set engines; 3126B, C7, C15 and C18 marine engines |
| 240-5302, 196-4169, 239-8277, 322-3601, 348-2376 | 10R-4091 | D6R II track-type tractor; 973C track loader; 12H motor grader; 627G, 637D and 637G scrapers; TK711, TK721, TK722, TK732, TK741, TK751 and TK752 feller bunchers; C9 marine engine |
Not on the list? If it has two 70-pin plugs, send it. Truck part numbers such as 157-3705, 179-4899, 223-1235 and 256-1159 are the same family.
Self-ship free, or add a prepaid UPS label. Drop-offs in Princeton, MN by appointment. Include your machine model and engine serial number.
You pay the repair price at checkout. If we can't fix it, you get a full refund. You get a written report of what we found.
$525 flat, 3 to 5 days on the bench. Rush priority is available at checkout if the machine can't wait.
Your own ECM, bench-tested, lifetime warranty. Status email at receipt, at diagnosis, and at ship.
On a 70-pin unit, you get a full refund when it is a normal failure we could not fix. We fix the large majority of the 70-pin ECMs that come in. The exceptions are when the ECM itself is the reason: a board that is cracked, burned, or eaten by water and corrosion, a proprietary chip that is no longer made, or damage from an earlier repair attempt. In those cases, and if your ECM tests good with nothing wrong, $150 covers the bench test, the written report and the return shipping, and we refund the rest. You can also put what you paid toward a tested exchange unit.
$525 flat with the bench fee included, the same price as our truck Cat 70-pin repairs. You pay the repair price at checkout, before you ship it. If we can't fix it, you get a full refund, unless the board itself is damaged beyond repair, a part is no longer made, or it tests good. Then $150 covers the bench test, the report and return shipping, and we refund the rest.
Cat ADEM III ECMs with two 70-pin plugs are 3 to 5 days on the bench right now, plus 1-3 days return shipping. Need it sooner? Add rush priority at checkout and your ECM goes to the front of the line.
Look at the engine ECM. If it has two plugs and each one is a 70-pin, it is the ADEM III and it is in our fast lane. If one plug is a larger 120-pin, it is the later ADEM A4, which we also repair in 15 to 30 days.
Yes. A lot of these come in with no label left on them. Send it in with the machine model and engine serial number if you have them, and we identify the ECM on the bench.
Yes. We repair your own ECM, so it comes back with its own software and settings and goes back into the same machine.
Related: Cat 70-pin ECM problems & symptoms · Cat ECM repair · C15 ECM repair · C12 ECM repair · C13 ECM repair · C16 ECM repair · C7 ECM repair · 3126 ECM repair
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