Just Acquired a 2005 JCB 3CX

Woof

Member
Hello all, new here, lots of questions... please do point me in the right direction if I'm in the wrong section, forum, site, life etc.

Always wanted a JCB and was in a position to acquire a 2005 3CX. Very basic, non turbo, standard bucket, no extending dipper, but very much bright yellow. There are a few things I will need to have fixed / changed and would very much appreciate it if anyone can give some advice (other than not being a fool and buying a backhoe loader I didn't really need).

1.) Would love to change the X pattern SAE backhoe controls to + pattern ISO. Just coz. I've no idea if this machine can achieve this without major surgery.

2.) One of the rear stabilisers will not lift. It lowers fine and will lift the machine, and will then drop until the machine is on the ground but wont raise further (pin is missing that holds the foot in place too but that's another matter easily solved).

3.) Dipper and boom wont both move at the same time. Both work well on their own, but dipper wont move at at until I fully release all pressure from boom control (I might have that the wrong way around). Revs high, revs low, all the same.

4.) Boom slew control is reversed. Controls left turns it right and vice versa. I'm assuming that's an easy fix by swapping hoses over (after pressure released etc).

Typically on buying a new toy, my first job would be to change all fluids and filters. Might that fix some of these issues alone or will I just end up dumping out new fluid in order to fix a bigger problem?

Although it's a non-turbo, it does seem to have plenty of power (Perkins T2 engine according to JCB site). Can raise back of machine with the backhoe fine (with few revs), same with front loader.

A maintenance / service manual would be a great help if one exists.

Post is too long already, thank you in advance for any help / advice.

Woof
 
Didn't think anybody bought a non extenda dig 3CX in this country, its a big miss on a backhoe.

Is it a uk registered machine or is it a grey import?

This may answer why no extenda dig, if it is that may explain why along with no turbo etc. The machines sold into developing world etc had reduced features at a much more attractive price.

Back to your original questions though regarding the control pattern, have a look at spool block under leavers at back and you may be able to change hoses over. However would advise getting a workshop manual (plenty on internet for about £30 ash) so that the hydraulic function (slew, dipper bucket ram etc) relief pressure is not affected if you change hoses over, obviously port would need to be same size to do this.
Personally i wouldn't bother as i jump between ISO and SAE and although uncomfortable at beginning never really held back once used to it.

As for the boom dipper issue, your pump may not be generating its design parameters or is too small to operate both function simultaneously (if its a grey import). Get hold of someone who has the JCB equipment (flow/pressure test equipment) and will be able to tell you what's going on.

The jack leg may be ram seals passing or issue with spool, spool can be ruled out by fitting gauge to hose.Leg could be seized which i had on 3CX which was parked up for a year, used back actor to assist and got it moving.

Great tool to have but takes more thought to get best out them but can do so much with one machine.
 

Woof

Member
Didn't think anybody bought a non extenda dig 3CX in this country, its a big miss on a backhoe.

Is it a uk registered machine or is it a grey import?

This may answer why no extenda dig, if it is that may explain why along with no turbo etc. The machines sold into developing world etc had reduced features at a much more attractive price.

Back to your original questions though regarding the control pattern, have a look at spool block under leavers at back and you may be able to change hoses over. However would advise getting a workshop manual (plenty on internet for about £30 ash) so that the hydraulic function (slew, dipper bucket ram etc) relief pressure is not affected if you change hoses over, obviously port would need to be same size to do this.
Personally i wouldn't bother as i jump between ISO and SAE and although uncomfortable at beginning never really held back once used to it.

As for the boom dipper issue, your pump may not be generating its design parameters or is too small to operate both function simultaneously (if its a grey import). Get hold of someone who has the JCB equipment (flow/pressure test equipment) and will be able to tell you what's going on.

The jack leg may be ram seals passing or issue with spool, spool can be ruled out by fitting gauge to hose.Leg could be seized which i had on 3CX which was parked up for a year, used back actor to assist and got it moving.

Great tool to have but takes more thought to get best out them but can do so much with one machine.
Thanks very much for the detailed reply. I should have mentioned, I'm English but I live in Thailand. The machine was sold new here and almost all of them (all that I've seen at least) are pretty basic. I've yet to see one in the flesh that isn't the same spec as mine. I bought it on a whim. If I can get it fully functional then there is lots of work it can do on our land.

I have just managed to find "Service Manual 3CX, 4CX, 214e, 214, 215, 217 & VARIANTS Backhoe Loader From M/c No. 930000 Onwards From M/c No. 903000 Onwards (USA)" from an online service that I was already subscribed to and it seems to have all the technical info I'm likely to need - 1212 pages all in.

Again, very much appreciated.
 

Woof

Member
Just on the offchance that anyone else wants to change the lever pattern from X to +, here's the relevant section from the manual:

3CX_Backhoe_Control_Levers.jpg
 

KB6930

Member
Location
Borders
The X pattern is much more comfortable to work than the + in a backhoe your arms naturally pull to the corners when the sticks are between your legs . It doesn't work with a joystick tho it's much better as +
 

Woof

Member
Well one item solved anyway. I mentioned that the pin holding the foot to the stabiliser is missing. I didn't realise that this pin also goes through the bottom of the ram. No pin = no lift.
 

Woof

Member
The X pattern is much more comfortable to work than the + in a backhoe your arms naturally pull to the corners when the sticks are between your legs . It doesn't work with a joystick tho it's much better as +
Totally get your point. I've not used hydraulics for more years than I can remember and I'll be learning again on both this 3CX and a Kobelco SK200 at the same time. Hopping between ISO/SAE and X/+ is enough to fry my brain (and dig holes where they aren't supposed to be). I could probably deal with the boom / dipper swap over at some point, but with my slew also reversed, the machine is currently trying to fill in holes that I've not yet dug.
 

Exfarmer

Member
Location
Bury St Edmunds
This machine could well have been built in India and may be very different to UK ones
for instance wheels may be optional, which saves wearing rubber when you are travelling in the fast lane of the motorway :ROFLMAO: :ROFLMAO: :ROFLMAO:
965A3FCD-5CC6-4FF1-B9D8-DFF2AFF1BF6B_1_201_a.jpeg
 

Woof

Member
This machine could well have been built in India and may be very different to UK ones
for instance wheels may be optional, which saves wearing rubber when you are travelling in the fast lane of the motorway :ROFLMAO: :ROFLMAO: :ROFLMAO:
965A3FCD-5CC6-4FF1-B9D8-DFF2AFF1BF6B_1_201_a.jpeg

Well now, that might explain why the horn goes "ding ding".

As for the X to + change, I did it and it worked mostly great. However the plastic shroud doesn't fit back on because the level brackets sit too far to the outside. Looking at the JCB doc in more detail, the main mounting bracket for the lever brackets and the stabiliser controls are different part numbers for + compared to X. Slightly narrower with a right angled bend rather than angled. I would think the main levers themselves might be different too as they meet too close together when slewing right and curling the bucket in. No doubt they can be bent, but as the plastic shroud doesn't fit I changed it back to X pattern and put it all back together.

Miraculously, once it was taken apart and put back together twice, dipper and boom now both work at the same time, although not both at full bore at the same time (which wouldn't be normal for me anyway).

No idea if that was due to something I changed or whether it's "loosening up" with a bit more use. I didn't pay all that much for it (< £10,000 including a 500 mile delivery trip), so I'm expecting a few headaches.
 
Totally get your point. I've not used hydraulics for more years than I can remember and I'll be learning again on both this 3CX and a Kobelco SK200 at the same time. Hopping between ISO/SAE and X/+ is enough to fry my brain (and dig holes where they aren't supposed to be). I could probably deal with the boom / dipper swap over at some point, but with my slew also reversed, the machine is currently trying to fill in holes that I've not yet dug.
Ha. Reminds me of the Jasper Carrot joke “Driving home from the pub one night I turned into the wrong house and collided with a tree I don’t have“
 

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