My '46 bed has a lift, which works, but the Manufacturer's plate information has all departed, leaving only a blank plate with a couple of stamped numbers. If anyone can identify the manufacturer, I would certainly appreciate the assistance. Has a couple of leaks I need to address.
Looks like a 1940's vintage Hercules ram. Same as on my 1941 and 1942 GI dump trucks. Generic packing material from McMaster-Carr can get you all sealed up.
Hi Paul, Thanks. It makes a bit of a mess on my garage floor if the doggie training pad blows out of place. Seems to be leaking around the pump drive shaft. Not bad, but constant.
The ram, position selector, and the pump all use packing material; not seals. The packing material is compressed with gland nuts on the ends similar to the construction of household plumbing valve stems on fixtures from the 1960's and older. I believe the packing material I got was aramid, but will need to check...there are many different types and diameters. I have the packaging up in my shop and can hunt for it this weekend if you are interested. The good thing is that all of these areas can be serviced with the ram assembly still in the truck, a surprisingly hassle free repair.
Hopefully this will solve your trucks "marking its spot" issue.
Is this installed in a 1946 civilian 1 1/2 ton truck? I would like to see some more pictures.
I have posted an image of a ram assembly from a 1942 military Chevy dumper. On closer inspection, the PTO output shaft housing looks a little different than on your truck.
Just a bit of added evidence. Examination of the data plate under different light, wet, etc. one can make out the words "Steel Products" on the top line and some distance below ", Ohio" pretty much confirming your identification. Thanks again for the help.
Hi Paul, Yes, I can see big difference in the pump shaft, however mine (it is in a civilian 1 1/2 ton, but don't know when it was installed) has two PTO input shafts. Beyond that, though the construction of the unit in your picture obviously shares it's heritage with the one in my truck. Will grab a few more pics after work this afternoon.
Perhaps you can remove the PTO input housing and see how your model of ram seals. I have included an blow-up of a military Hercules ram, it may give you an idea of how yours is assembled. Sorry for the lousy photo quality as it is a picture of a copy of a copy. Be careful with working on that unit as no parts are available any longer...don't break anything! Don't know about your dumper, but mine works fantastic.
Fine Business! Thanks for exploded drawing. I hope I never need it! Mine works fine, also; raises at an idle. The seals appear to be common oil seals, the opening in PTO input casting is 3/16" - 1/4" larger than the pump shaft diameter. Perhaps I'll just "catch" the drips for now and let the dragon sleep if it doesn't get worse.
