Clutch locking latch

Dan MD · Jan 18, 2014

I just bought one salvaged from a MD. I"ve never seen one installed, but my SMD looks like it has mounting holes for one. Can anyone tell me about them? Were they stock equipment? Only used for starting?

Thanks,
Dan

IH fan · Jan 18, 2014

(quoted from post at 12:41:23 01/18/14) I just bought one salvaged from a MD. I"ve never seen one installed, but my SMD looks like it has mounting holes for one. Can anyone tell me about them? Were they stock equipment? Only used for starting?

Thanks,
Dan

Dad installed a similar thing on a Super C and the throw-out bearing didn't last long. It was not meant to stand up to the clutch dis-engaged for prolonged periods of time, according to the dealer at the time. He took it off and last I saw it, hanging on the grainery wall on the farm.
I can't say for the larger tractors, but that was the situation with a Super C.

Janicholson · Jan 18, 2014

On small IH tractors used for transplanting and very slow activities, a hydro creeper attachment was used driving the trans through the PTO with a hydraulic motor. The clutch had to be kept down to allow the disconnect. I do not know if it was used on larger H-M series due to lack of live hydraulic power. Jim

Jim Becker · Jan 18, 2014

As far as I know, the only Hydro-Creeper attachments were for the smaller tractors, 1x0 and 2x0. It had an interlock to block the clutch down when it was in gear. To work, it required the combination of live hydraulics and a transmission driven PTO. As part of the instillation, the graphite throwout bearing should have been changed out for a ball bearing type.

I don't know what operation would use a clutch lock on an M.

Haas · Jan 18, 2014

I think the clutch latches were standard on the MD. I know the one that was on the farm where I grew up had one. A friend here has one and it has that latch. However, I had an MD in my collection for several years and it was missing that latch. I think the purpose was to make them easier to hand crank, as those engines had a lot of resistance to cranking as indicated by the 12 volt system all of them had. The idea was to reduce hand cranking effort by getting rid of the drag from the transmission.

D Slater · Jan 18, 2014

To aid cold starting if you didn't use your foot. Supposedly used on MD and SMD to serial number 35569.

rustred · Jan 18, 2014

my 1949 M Diesel has the clutch locking tab on it.

Dan MD · Jan 18, 2014

(quoted from post at 01:13:45 01/19/14) To aid cold starting if you didn't use your foot. Supposedly used on MD and SMD to serial number 35569.

My serial number is 33352, so I guess it came with one and was removed at some point.

D Slater · Jan 18, 2014

At the serial number break the top cover had a change and the suffix on the casting number was then R3. Same transmission cover that was used on the SMTA. You should have a lower suffix on yours, if you can see it.

Clutch locking latch

Dan MD

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IH fan

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Janicholson

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Jim Becker

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Haas

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D Slater

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rustred

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Dan MD

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