O.T. Scoopmobile Problem

[quote="Jack"]I have one very old Scoopmobile model H, older than the Wagners. This one was made by Mixermobile Corporation of Portland, Oregon. It still works pretty good, or did until it wore out a flywheel ring gear.

Has anyone out there changed a ring gear on a Scooper with big block Chrysler Industrial engine, equipped with fluid coupler on the clutch. The drive shaft is so short, I don't believe the transmission input shaft would clear the fluid coupler and throwout bearing before the reverse gear runs smack into the differential pinion.

The engine can't come out the back because there is a big angle iron under the radiator that ties the whole thing together side to side. Then there is the single steering wheel assembly that it would have to dodge.

The service door in the top is too small to pass that engine through, unless possibly it would go standing on end.

How did they put the things together? Set an engine on a block and weld a loader chassis around it maybe?

I sure need some advice on this one. Anybody wants to venture into this, I appreciate your courage and thank you very much.

Jack[/quote]

Can you post some pictures?

It will take a little while. A quick 10 minutes to get the pics and a hair-pulling, teeth gnashing two hours to figure how to get them from the camera to the posting! Wasn't that way before my computor got "improved".

1) Scoopmobile H. Look familiar? 2) Crazy wheel and radiator, back of machine 3) Peek at Chrysler engine under/behind PS cylinder 4) looking down through cab floorboards 5) Timken axle. Not much room under here. 6) Looking down through the top access door. 7)Look at radiator and fan through top door 😎 LH rear motor mount. engine can drop down at this point 9) Machine seen from front.

Every road dept. in the country must have these at some time. They were a favorite becaause you could remove the final drive torque arms and they would free wheel tow behind a dump truck. Very popular.

There must be some mechanic out there that has pulled an engine, transmission or both. How did you best do it?
I can see possibilities, but what is known to work?

Thanks,

Jack


[attachment=37626]2016-08-27 04.10.36.jpg[/attachment][attachment=37627]2016-08-27 04.11.02.jpg[/attachment][attachment=37628]2016-08-27 04.11.34.jpg[/attachment][attachment=37629]2016-08-27 04.12.29.jpg[/attachment][attachment=37630]2016-08-27 04.13.05.jpg[/attachment][attachment=37631]2016-08-27 04.15.06.jpg[/attachment][attachment=37632]2016-08-27 04.16.07.jpg[/attachment][attachment=37633]2016-08-27 04.17.51.jpg[/attachment][attachment=37634]2016-08-27 04.19.49.jpg[/attachment]

It looks tight for sure. Can the machine be blocked up and the engine dropped out the bottom? Hard to tell in the photos.

The front engine mount(would be rear on this machine) is welded in, under the front of the reverse mounted engine. The bell housing mount is vertical on the sides. If the drive shaft was removed and the radiator fan and extended hub were removed, the engine might slide toward the front of the machine enough to drop down. Then what do I do with it? Can I get it out from under the machine?

What I'm thinking: If the drive shaft was removed and radiator removed, maybe the engine would slide toward the back enough to get the transmission out with a transmission jack. But I'm wondering if I can keep all of that stuff under control without a satisfactory balance point and overhead hoist. The overhead hoist might reach a balance point on the engine, or close enough. No way it's going to reach a balance point on the entire unit. Working on that thing puts you up real close in a small area. That old Chrysler is heavy enough to inflict some personal damages.

It also appears that the clutch end of the engine is bolted up by the bell housing, so the engine has to sit or hang on something else before we go after the flywheel. The bell housing is deep to contain the clutch and fluid coupler, so there is a long pull involved to remove the transmission, with or without the bell housing attached.

Somebody must have done this before and knows the procedure. Or maybe they have and want nothing to do with it again! The little Cat is a garden party compared to this beast.

Thanks for considering the problem, O.I.H. Maybe we'll come up with something yet.

Jack

as an old road dept. mechanic, that looks like something that the folks in accounting think would be much better than a cat 920. 😞