Who understands PTO hydraulic tipper decks?

[rusty360]

31 minutes ago, rusty360 said:

I'm no expert but I'd say the P is pressure lines and R is returns?

Sorry I'm a fark up I'm thinking power pack, it's got a pto pump!!. I'd say the wrapped line marked P is from the PTO pump? Pressure line into valve.

[Unclejake]

Pretty sure (without being certain) the wrapped line marked P is a gravity fed line to fill the black tank from the Hiab tank. There's no other way to get the oil into that black tank. I'll get a photo from a better angle tomorrow

[rusty360]

10 minutes ago, Unclejake said:

Yes. Those bastards. They have wires! Guess they're hooked up to the diverter switchbox.... and now I am thinking just how handy a Hiab would be! LOL

 

They might just divert the oil though the cooler? Rather than to the tipper ram. I'd say from those pics the tipper ram is on a simple up down valve.

The cooler will be on the return side that sees back to tank pressure.

Track the feed line off the pto pump and you will work it put pretty quick.

[Hemi]

20 minutes ago, Unclejake said:

Pretty sure (without being certain) the wrapped line marked P is a gravity fed line to fill the black tank from the Hiab tank. There's no other way to get the oil into that black tank. I'll get a photo from a better angle tomorrow

Gosh thats a decent cluster of hoses. whats the fitting underneath that "T" piece upper mid left . is it just a cap, that might be your fill that for some reason has ended up under eveything. Possible the divertor bolter to that tank returns directly into the tank. 

everything else i have no idea . thats all spaghetti to me

[Hemi]

EDIT!

just checked other photos. its the return , that will be your fill i reckon. that makes it awesome to top up fluid. undo a million rusted to shit connectors. 
 

[Mof]

52 minutes ago, rusty360 said:

@Hemiits a strange one re the two coils alright. Maybe its one coil is for up and the other is down, the spool just moves a bit further out to let the oil return?

I'd say you're right there 

[rusty360]

I guess we will see tomorrow in how to work out hydro issues via pictures! 

 

Love it.

[Mof]

1 hour ago, Unclejake said:

U dissin on ma sprng cuz?

Puguhuhuuu 

You should be able to unscrew the knurled end on the right, slide off the electromagnets, and pull/push the shuttle by hand.

I can't remember if they have detents, it could take a bit of a push

[Unclejake]

18 minutes ago, Hemi said:

EDIT!

just checked other photos. its the return , that will be your fill i reckon. that makes it awesome to top up fluid. undo a million rusted to shit connectors BUT ONLY WHEN THE SYSTEM WORKS AND YOU CAN RAISE THE DECK
 

Edited for truth

[Hemi]

28 minutes ago, Mof said:

You should be able to unscrew the knurled end on the right, slide off the electromagnets, and pull/push the shuttle by hand.

I can't remember if they have detents, it could take a bit of a push

Man i was sure they were sealed but just did a 3 second searched and it looks like a few do have pin like hole in the end of the armature you can put something down. i have come across zero of these in my travels.

cant wait to see this working

[440bbm]

10 hours ago, Hemi said:

Man i was sure they were sealed but just did a 3 second searched and it looks like a few do have pin like hole in the end of the armature you can put something down. i have come across zero of these in my travels.

 

it completely depends on the service type and the industry.  ones we used a few years back for the gas industry completely sealed - for obvious reasons. 

[Unclejake]

Good morning everyone. The clean looking valve assembly seems to be hoist up and down control and lots of return lines into the black tank. The tank is a bit over half full

The dirty looking valve assembly (inside the chassis) is a diverter that is fed directly from the PTO pressure line. Hoses from that diverter go to places. I'm not entirely sure where yet... but one of them goes to the Hiab

Either the diverter or the PTO isn't working as I still can't lift the tray and have no apparent hydraulic pressure at the ram, but I didn't have the correct spanners to crack open the pressure  hose from the PTO to the diverter yesterday. I'll try again this afternoon. 

[Unclejake]

The PTO doesn't seem to be engaged. I guess a crook cable? 

Unfortunately it's too hard to get at without jacking the truck up off the ground so it'll need to wait until all the other parts have arrived and can push the truck into the rented shed. I only get the shed for seven days.

[Unclejake]

M

[Unclejake]

I'm guessing as the ram retracts it discharges fluid into the black tank via. the spools?

If so perhaps I can delete excess failure points and get to this state.  Unsure. 

 

[rusty360]

39 minutes ago, Unclejake said:

I'm guessing as the ram retracts it discharges fluid into the black tank via. the spools?

If so perhaps I can delete excess failure points and get to this state.  Unsure. 

 

Yes this were I would start. Looking at the above Pic I'd say the oil returns internally via the control valve.

[rusty360]

Were does this come from? It's gotta be the pressure feed line via the diverter?

[rusty360]

Those return lines could have been the old filler point to looks maybe a 1inch fitting. Would need a breather there thou.

[Unclejake]

Yes, the hose marked in yellow comes from the diverter. 

Deleting the four return hoses would give me a filling point, but I will need to have a filler hose as the deck would make it otherwise difficult to add fluid. Good point about the breather. I hadn't thought of that... but I can just drill a hole in whatever I cap the hose with.

I need to get the clutch fixed, get a working hiab back in to lower the deck, and then drive the thing into the shed. I'll do that once all the bundy tube arrived (possibly Wednesday). 

EDIT: Perhaps there's a removable plate in the deck for topping up the hydraulic tank already. I will look on my next visit. My biggest hassle is the diesel gushing over the PTO and grass when I run the engine. It's a PITA and right where I need to work

[rusty360]

1 hour ago, Unclejake said:

Yes, the hose marked in yellow comes from the diverter. 

Deleting the four return hoses would give me a filling point, but I will need to have a filler hose as the deck would make it otherwise difficult to add fluid. Good point about the breather. I hadn't thought of that... but I can just drill a hole in whatever I cap the hose with.

I need to get the clutch fixed, get a working hiab back in to lower the deck, and then drive the thing into the shed. I'll do that once all the bundy tube arrived (possibly Wednesday). 

EDIT: Perhaps there's a removable plate in the deck for topping up the hydraulic tank already. I will look on my next visit. My biggest hassle is the diesel gushing over the PTO and grass when I run the engine. It's a PITA and right where I need to work

Sweet as, you will be able to get a filler breather to screw straight into were all the returns currently go in. You just might have to remove the threaded reducer. Just top up oil when the deck is up and leave a bit of space for the ram oil.