Old JCB hydraulic valves / pipes replacement

[rob4465]

As you can see from the photos, I have a very old JCB, It's still incredibly useful and goes pretty well considering it's older than me!

There's some leakage from some of the connectors at the back that feed the hydraulics to the arm. Has anyone have any experience of replacing or purchasing replacement parts for older machines like this?

Thanks for any help.

 

[X344chap]

Not a JCB expert - but it looks like standard 3/8 hydraulic pipe and adapter (prob JIC to 3/8") to the steel pipe. All available widely from your local hydraulic company or from ebay.
Interestingly 2 of the connections look as though they are on the wrong way round. Where exactly are the leaks coming from? Give everything a good wipe down then go look with bit of blue tissue. I dont mind a bit of oil around - keeps rust and rot away - so long as its not dripping and making a mess.

Edit - i see your drip tray and mess now.

 

[jf850]

As you can see from the photos, I have a very old JCB, It's still incredibly useful and goes pretty well considering it's older than me!

There's some leakage from some of the connectors at the back that feed the hydraulics to the arm. Has anyone have any experience of replacing or purchasing replacement parts for older machines like this?

Thanks for any help.

I am no help to you with your hyd fittings.

Is that a JCB 2 B ? It's a different , narrower cab than a 3C MK 1. In nice condition , considering it's as near 60 years old , than 50.

 

[br jones]

Not a JCB expert - but it looks like standard 3/8 hydraulic pipe and adapter (prob JIC to 3/8") to the steel pipe. All available widely from your local hydraulic company or from ebay.
Interestingly 2 of the connections look as though they are on the wrong way round. Where exactly are the leaks coming from? Give everything a good wipe down then go look with bit of blue tissue. I dont mind a bit of oil around - keeps rust and rot away - so long as its not dripping and making a mess.

Edit - i see your drip tray and mess now.

I would imagine there are o rings and seals in the swivel part of that joint

 

[rob4465]

Thanks very much for the help. I'm not exactly sure which model it is. It's been kept under cover and actually starts first turn of the key. I will take the leaking joint apart, as you say there are probably o rings in there. Weekend job !

 

[Exfarmer]

Aword of warning. The ram geometry on the from bucket is notorious for bending the pistons when the pivots are worn and they can go over centre under load. That is expensive, check those pivots and do not use them if there is much wear. They can be bushed cheaply

 

[essexpete]

Which engine have you got in that?

 

[Netherfield]

I'll bet it's those swivel joints that are leaking, notorious as they got older, new O rings will work sometimes, other wise need to be replaced, if they are still available.

BMC/Nuffield 4.98 engine?

Don't know about that model, but the old 3s used to have a lot of 5/8s BSP pipes.

 

[essexpete]

I think it is an early JCB 2 and from the 65 plate I guess it will have the Nuffield 3 cyl?
Yes I would go to local hydraulic shop. If they are any good they will sort out replacement hose and fittings. Amazingly clean and original machine. Good to keep it under cover.

 

[agrimax]

Based on a 10/42 Nuffield. It does look good......

 

[Exfarmer]

I know someone who would give their right arm for it. He does not do the internet but I could copy this to his wife and I know what she would do
I will mention it next time I see him, safer , as long as she does not hear
Actually she is very nice, but a little fed up with the garage being full of tractors and her car in the rain.

 

[H200GT]

That’s an early 3c mk1, cut my JCB teeth on one of them, was not that tidy though I must admit. That is a gem!!!

Should have a leyland / BMC 4 pot in it

Years ago, must be 20 plus, we replaced a couple of them swivel joints in the photos with steel equivalent, supplied then through Gunn Ruthin.

They are called “live swivel elbows” and should be available through hydraulic suppliers, although almost certainly wont match originals

I would try JCB, they may stock seals for the joints, they are very good at stocking older parts. Alternatively if they are not damaged, take the offending ones off and send them to Seal Masters in cardiff, if they can’t find seals for them, they probably no longer exist.

 

[agrimax]

Afraid not,It's a JCB 2 and should have a 3 cyl BMC in it. Sure it says '2' on the boom...... and has the slew pots low down.The 3C had them at the top. Not sure from the picture,but if the backhoe is detachable,it's a 2B but if not it's a 2.

 

[H200GT]

Afraid not,It's a JCB 2 and should have a 3 cyl BMC in it. Sure it says '2' on the boom...... and has the slew pots low down.The 3C had them at the top. Not sure from the picture,but if the backhoe is detachable,it's a 2B but if not it's a 2.

You may be right, never had anything to do with a 2.

The one dad had was definitely a 3c, it had the raised plate decals on the rear boom, and a 4 pot BMC engine. Looks just like the one in the photos in design, but may have been bigger.

It had a lift up rear window that folded onto the roof.

Looked just like this one, but had standard front bucket

 

[agrimax]

Yes,the last of the 3Cmk1s used the Nuffield 4/65 skid unit and engine. Early models were Fordson Major based.

 

[essexpete]

Wider cab on the 3

 

[Exfarmer]

Its probably a myth, but it was said that Mr Bamford on hearing that Fords were going to be building their own digger, not only cancelled all future orders for their skid units, but also buried the last one off the line under the factory forecourt.

 

[essexpete]

Its probably a myth, but it was said that Mr Bamford on hearing that Fords were going to be building their own digger, not only cancelled all future orders for their skid units, but also buried the last one off the line under the factory forecourt.

I have heard (read somewhere) that as well. Probably a myth, more likely to do with with a breakdown in the relationship when the Daganham Major was replaced by the Basildon world 000 series or 6X however it was known. Mr JCB was not known to be an easy person to deal with from what I have gleaned. Why was he [Joe Bamford] never knighted?

 

[Exfarmer]

I have heard (read somewhere) that as well. Probably a myth, more likely to do with with a breakdown in the relationship when the Daganham Major was replaced by the Basildon world 000 series or 6X however it was known. Mr JCB was not known to be an easy person to deal with from what I have gleaned. Why was he [Joe Bamford] never knighted?

He became a tax exile in Switzerland which in those days would have been a no no.
he was made a CBE though