First off, I'd like to thank the guys that posted pics of their engine compartments for me a while ago...they were invaluable in getting my truck up and running again!
One of the trucks I am parting out has a PTO driven winch on it. I'm considering installing it on my flatbed instead of an electric unit (this will be used to operate a tow sling, GIN poles and loading the deck with whatever).
early to mid 70's Ford 4 speed (reverse is right and back = NP435??)
PTO is mounted to the passenger side of the transmission.
'94 F-350 with a ZF5 5 speed. I'm not even sure at this moment if it has a PTO opening, been too busy with getting it running to date and this idea just popped into my head tonight.
I don't think the older stuff mounts on it though, but I'm not sure. I can answer the other question though - your ZF has two PTO take-off ports. You have a PTO cover on each side - for two accessories.
I've been doing some other research into this, and I found a rebuild shop that says basically, due to the design of this transmission, its not a very good idea to run a PTO for any length of time with it (and specifically mentions tow trucks and winches) due to internal heat build-up. Any thoughts here?
In late 1987, Ford introduced the 5speed ZF transmission in the F250, F350, & F450 trucks. They were available for gas as well as diesel models. The easiest way to identify the unit is to see that it has power take off (pto) opening plates on the lower sides of the unit. ZF transmissions are reliable units that should provide good service when taken care of properly. Keep in mind that the ZF has 6 constant mesh mainshaft gears, so there is a considerable amount of potential for heat buildup. It is never a good idea to leave the truck idling with a pto engaged, such as in tow truck applications. The unit was redesigned in '96 and had small, but significant changes. The synchro teeth were enlarged to provide longer life and more positive shifts, and the bearing retainer was designed to be replaced without having to disassemble the case. The case was beefed up also with this design.
Ok then that question is taken care of.
Back to the original question, anyone think the PTO off hte older transmission will bolt onto the ZF and work properly? Or am I wasting my time and should just go with my original plan and use an electric winch?
I think I heard somewhere in my travels that there are 2 different ones out there, one coarse toothed gear and one fine. You might just need to try it if nobody can tell you for sure. Is there a tag on the unit you want to install with make/ model? I'd try googling that and see what you can come up with.
I dont know yet...I need to dig it out of the pasture/bushes as I get caught up on other projects so we can tear into it.. I will be pulling the engine/trans, PTO powered deck winch and the gin poles off it as well.
I'll keep you all updated as to weather it will work or not when I get that far!
You need to get the model off of the PTO and the actual transmission model number and I could tell you if it would fit. It may be as simple as changing the input gear on the PTO to make it fit the new transmission. There should be no problem with overheating as you won't run continously.