Welfare cabin hydraulics

[Giles]

I can’t see it being a fuse if it’s working fine in one direction . Can you look at the wiring in the remote and see the colours to retract the legs then short the same colours at the pump to see if that’ll work .

Can you see a serial number stamped on the tow frame anywhere ?

Is everything else working ok ?

Generator works, lights work not tried night heater yet might get an updated control for it more like the Chinese ones with screen. This one just has switch on roof above counter.

not tried much yet as been too busy to dedicate any time but it’s rusty underneath and needs a bit of tlc but was only £4k has come from up your way stickers have Oban depo etc

 

[Giles]

On my one it makes no odds dead ending the rams.
Pump comes in straight away as soon as you press the button . I reckon fault in the hand mote . Shouldn’t be difficult to figure out .
Removing the table though is really advisable if your fault finding though as it makes access so much handier

Is that unbolt job?

 

[V8Druid]

There must be something else that does the load holding as that two position ceetop valve only swaps the direction is there a po check on the pump housing. But then it can't work like that either as it lowers ok without the pump running. I suspect the cylinders are master and slave setup to keep level?

looks to be an all ports closed set up Mike ...

should self level by equal pressure to all rams ... if all in parallel no ram will take more pressure than any other

 

[Giles]

Your sitestak pipe racking box thing was an utter bargain!! I really need one!

Yes it was haha populated it today for next two Jobs which are all drainage, annoyingly it’s 12’2” with square feet so doesn’t fit snuggly on my two 12’ trailers. Need to weld some lifting eyes on it so can lift it with diggers when no forks available

 

[Furniss]

My lashed up sitestack idea is great when it's traveling from installation to installation but its a pita to transport because you get very little else on the truck at the same time...... could do with being towable

 

[hiluxman]

looks to be an all ports closed set up Mike ...

View attachment 44104


should self level by equal pressure to all rams ... if all in parallel no ram will take more pressure than any other

Little story. We once had one n hire guy dropped it of and put it exactly where we wanted it. Followed by a demonstration on how to lift it and set it...twice. Around 3 weeks later it came to move it. What a palaver.

It went up, it went down, it tillted left, it tillted right, wheels on the ground wheels tucked under, legs in, legs out, legs part way in.

We moved it eventually....hire guy came back to pick it up and nothing wrong with it bar us 3 idiots that didn't know the sequence it needed to follow to make it go up and down properly.

 

[V8Druid]

It’ll retract on its own weight but motor now won’t run so won’t lift legs up clear of wheels

so manually run the pump by crossing the live poles to get them up all the way

It’s the other way though it’s closing the rams so oil being returned to tank

basically P to B and A to T is the downward action with the cetop energised and de-energised the rams are configured P to A and B to T to lift them ... the motor obviously has to run for both actions ... but the solenoid must only be engaged for the downward stroke ... have you wired it so that the solenoid is engaged for both up and down @Giles? .... without the motor/pump running it will return oil under its own weight until there is no more pressure exerted from the welfare unit, but that's as far as the rams'll move without pressure input from the pump

 

[V8Druid]

I think the trailer mote is wired different to the cabin mote . I think I tried mine before . Is your trailer an ifor tipper ? If so I will try my trailer mote on my cabin tomorrow and see if it works . They are side by side on site

unless the trailer remote is for a double acting cylinder set up, I doubt there is provision to run the pump when the ram closes ... they're gravity down aren't they?

 

[Vinpetrol]

Yes motor runs drives them out fine, generator was running chucking 14.8 into battery. On video I’d turned it off as was too noisy for video.

Gene defo doesn’t need to be running to work jacks. Just well charged battery.

 

[T whiting]

Sounds like a wire off in the pump to me maybe burnt out a dodgy connection by running it to dead head and drawing a little more current

 

[Vinpetrol]

unless the trailer remote is for a double acting cylinder set up, I doubt there is provision to run the pump when the ram closes ... they're gravity down aren't they?

No , powered both ways . It needs to lift the jacks clear of the floor when setting up for towing and needs to power all the way down to lift the cabin high enough to lock the suspension back in

 

[V8Druid]

No , powered both ways . It needs to lift the jacks clear of the floor when setting up for towing and needs to power all the way down to lift the cabin high enough to lock the suspension back in

not the cabin, the trailer tip cylinder Vin

unless the trailer remote is for a double acting cylinder set up, I doubt there is provision to run the pump when the ram closes ... they're gravity down aren't they?

 

[Smiffy]

I don't think it's in the remote I may be wrong but some of these power packs used in other applications have a traditional lever attached as well as a remote and the pump automatically fires up when you pull the lever so I would say the switch must be in the valve or close to it.

 

[Danny]

Turn it on and let it do a full charge around 90 minutes and then see if it works

 

[Danny]

I'm sure i had the same problem when i went to move it off a job it was on for around 6 weeks, let it do a full cycle and it was fine

 

[Giles]

I’m not using my ifor trailer remote, welfare cabin has a 7 pin just for remote control to plug-in in so you can remove it for security etc.

So I googled trying to buy one no luck,

I stripped one end of a normal towing m->f connection leaving me 7 bare wires and one male 7 pin. With the male 7 pin plugged in I messed around touching wires until I had it going up and down with yellow live, yellow and blue up, yellow and white down.

I bought control box bit off eBay, powered both up down switches off yellow then ran blue to up and white to down.

Worked fine did the up down thing a few times pulled the pins let the wheels up etc, then got out of level some how tried fully retracting a few times but was still jacking off level so I fully extended rams then no motor running on down but cetop activating and gravity bringing it down. Got no wiring diagram etc just figuring it out as I go

 

[Giles]

Sounds like a wire off in the pump to me maybe burnt out a dodgy connection by running it to dead head and drawing a little more current

Yeah this might be it with charger cranking out 14.8v out as well

 

[V8Druid]

Worked fine did the up down thing a few times pulled the pins let the wheels up etc, then got out of level some how tried fully retracting a few times but was still jacking off level so I fully extended rams then no motor running on down but cetop activating and gravity bringing it down. Got no wiring diagram etc just figuring it out as I go

IMO the cetop activating (energising) will be for down ...
shouldn't be activating for up? (or possibly vice versa??)
it's coming down (rams are closing) under gravity with no pump running, by backflowing through the rams' 'down' cetop ports.
as said earlier the solenoid coil (b) activating is reversing the flows between the ram ports and the P & T lines making the single acting pump perform in both directions (double acting)
the solenoid coil should not be active (energised) in both directions

 

[Giles]

IMO the cetop activating (energising) will be for down ...
shouldn't be activating for up? (or possibly vice versa??)
it's coming down (rams are closing) under gravity with no pump running, by backflowing through the rams' 'down' cetop ports.
as said earlier the solenoid coil (b) activating is reversing the flows between the ram ports and the P & T lines making the single acting pump perform in both directions (double acting)
View attachment 44107

Yes can see that on here rams extending no light, press down button and ce top green then red

 

[V8Druid]

Yes can see that on here rams extending no light, press down button and ce top green then red

OK .. it's reverse to what i assumed ... can't understand why the LED is changing colour, unless it's due to voltage drop at that DIN connection ... try energising the cetop coil and crossing the starter poles to run the motor ... there'll almost certainly be a relay to operate the solenoid on the motor -- too high a draw for a small push button - usually ... (much like an ignition relay on a vehicle operates the starter solenoid) ... will almost certainly be two relays to operate solenoid on motor - one for the up motion and one for the down motion .... cetop solenoid'll only be circa 1A draw so probably paralleled with motor solenoid's relay?