I am working on a neighbors SDL odometer. There were broken gears so I ordered and installed new ones. The odometer still does not work. I marked the new gears and drove it and verified that the stepper motor is not turning the gears.

When I got into the motor, I found that the motor did not seem to be connected to the driveshaft.
My guess is that if I put superglue in the stepper motor armature hole and reinstall it in the odometer will work again, but if I am wrong the super glue will insure that I will never be able to get into the stepper motor again.
Can anyone confirm that the drive motor shaft should be solidly connected to the stepper armature?
I know it seems logical, but it actually spins so freely on the shaft that I have a hard time imagining it used to be connected to it.

See pic for shaft and stepper motor part.

Attached Thumbnails

 

__________________
1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660

No one has experienced this? Does anyone have an electronic cluster laying around that can look and see if this part is supposed to be bonded to the shaft?
I am confident I can glue it, but if its not supposed to be glued then the cluster is junk.
Thanks

__________________
1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660

Unfortunately there’s a lot less people with expertise on here these days than a decade ago. Might be worth trying to reach out to one of the companies that work on these to service it, or email/message one of the old posters who has refurbished these in the past.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

I sent it to Kris Rose.
Thanks for the reply.

__________________
1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660

I fixed my SD odometer years ago and posted a thread. The stepper motor had too much endplay. I shimmed it with an o-ring. Diseasal did the same thing to his SDL I believe. I need to dig around for the thread.

In the thread I think I show how to hook up a signal generator to test the odometer. If you can do this you can verify if all the innards are spinning properly.

Fixed 1982 300SD odometer slip at high speed

Odometers Not Agreeing

That is a shame. It has been a long ride and people are dropping off.

__________________
79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
97 C280 147k miles

I just got the cluster back in the mail from Kris and will be installing it this morning. He said the stepper motor was fine, but one of the gears I installed was misshapen and causing things to bind. He filed the high spot in the gear down to get it going.

__________________
1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660