I bought a d318 and that had a PTO clutch on it, and I'm trying to switch my wet clutch housing and stuff over to the new engine to put it in my 9u. The engine I bought had a pony motor on it, but on my wet clutch housing there isn't holes in the casting for the pony motor for the starter pinion? (I don't know the correct name) The old engine was converted to electric start but I want to put both on it. Does anyone know if they made two different styles one with one lever to engage the pony and one with two levers to engage it? the first picture is the wet clutch housing and the second is the dry clutch housing with the holes in the casting. Thanks

Regardless of the levers, the pony pinion has to be installed to use the pony to start the D318. Maybe that is not what you are referring to? Did the electric starter conversion go in a separate hole below the pinion or in the same hole where the pinion was originally?

There were plenty of later pony start setups that had a single lever pinion control where the first part of the lever motion brakes the pinion, additional movement then shifts it and then finally engages the clutch. there would be no separate pinion shift rod and finger installed in the clutch housing on one of those. The only ones I have seen in the flesh were on the larger bore D339 and D342.

What kind of teeth are on the flywheel ring gear you have? If it's a bevel gear, I think you will have to use the old style pinion but if its straight cut, then maybe one of the later style setups would work.

There was a later (interim) version of the D318 from around 1961 or so, that is not the same as the original as introduced in 1948. Those were produced before the D333. Maybe you have one of those.

Seems your trying to mix and match industrial engine housings with tractor housings and they are not the same. Industrial engines have the pony engagement linkage internal to the housing (like the D4) so as not to interfere with SAE mounted PTO drives. Tractor engines have the pinion engagement linkage external to the flywheel housing. Any of the later direct start tractor housings with provision for direct electric start also have provision for pony pinion. There is also a difference in the wet clutch cover housings. Factory direct electric start (only) cover housings do not have provision for pony engagement linkage. Wet clutch housings with pony motor and provision for direct electric start do have provision for linkage.

It was down in the lower hole on the housing. The problem I'm having is there's no holes inside the wet clutch housing where the rods hook Up to the lever like there is on the dry clutch setup. The casting is there but there's no holes where the bushings go in and the rods run. So I'm taking it that this style of setup won't work for the clutch housing I have? The teeth on both flywheels I have are the same, the teeth are both Angeled but they aren't beveled.

Hi Tydavis how are you? I purchased Mike Mcs 8u motor which is 1957 which is factory direct electric start, with helical pinion. It has a either bottle you pump and two piece pre coms with glow piugs and it is the same not machined for said shaft, you would have to machine the housing to fit i think it has the lump on the housing where it would go kel

What does you cover plate for the oil clutch look like, specifically the area of the pony pinion.

I'll have to go out tomorrow and take more pictures. The only pictures I have are the ones I attached where you can see the casting. Idk if it will help but the serial number is 23051

Also check the casting number on the flywheel housing. Should be a number close to 4H4946 for that s/n.

If I am following the right trail,you have more going on as a 9u 23xxx is a factory wet clutch but stated it had a dry clutch. The parts book has 2 rear covers for the wet clutch but they are interchangeable I believe. Thought there was only one main case for the tractor,but as was stated maybe industrial parts are not the same.

There several direct start parts tractors in my parts supply will look latter today to see if they have provision for pony motor pinion. I know pony start wet clutch D6 has the whole cut to put a direct starter on was thinking they are all the same.

I think he has the big hole for the pinion, just not the bore for the shifter rod to engage it. Also the power unit with a pto had a dry clutch where the late serial number tractor had an oil clutch.

I have a power unit here as well as several not so late serial number tractors, I will try to look at things.