Jcb boom hoses

[ih1455xl]

Any tricks to changing the boom hoses on a 531/70 or is it easier to take the boom out I take it it’s best to fit Genuine hoses

 

[Pan mixer]

Not done a jcb but have done a couple of Manitous...

With them you have to have the boom out about 4 or 5 inches, undo the pipes at the front, attach a strong string or similar to them so that it won't fall off (plugs with loops on them are best).

Undo pipes at the bottom and pull them out whilst someone else eases the pipes round the bend at the back.

If you have done it correctly then you should have the pipes all the way out, crucially leaving the string in place to pull the new pipes back in.

Take great care to pull the pipes in the right way up and the right way round otherwise you will be doing it again in a half hour or so when you find that the unions don't fit. (A 'friend' told me this)

Apologies if this won't work on a yellow machine.

alternatively ask @ACEngineering

 

[Bobthebuilder]

Helped a mechanic do our 536/60, absolute pita of a job, not something I’d fancy doing if you’ve not done it before, as if you get something out of place or not quite right the first time you operate the boom you’ll rip the pipes off again and be back to square 1

 

[ACEngineering]

Not done a jcb but have done a couple of Manitous...

With them you have to have the boom out about 4 or 5 inches, undo the pipes at the front, attach a strong string or similar to them so that it won't fall off (plugs with loops on them are best).

Undo pipes at the bottom and pull them out whilst someone else eases the pipes round the bend at the back.

If you have done it correctly then you should have the pipes all the way out, crucially leaving the string in place to pull the new pipes back in.

Take great care to pull the pipes in the right way up and the right way round otherwise you will be doing it again in a half hour or so when you find that the unions don't fit. (A 'friend' told me this)

Apologies if this won't work on a yellow machine.

alternatively ask @ACEngineering

you wanna job ? exception of the MLT 735 and 741, need to take the til ram out of them to get the hoses past it nicely, also handy to reach up with a die grinder on them and take the edge of the bit were they always rub through and blow.?

Never done them on a JCB, dont fancy it either from what i have seen.
Every time i work on a JCB i look forward to getting back on a manitou?

 

[Pan mixer]

you wanna job ? exception of the MLT 735 and 741, need to take the til ram out of them to get the hoses past it nicely, also handy to reach up with a die grinder on them and take the edge of the bit were they always rub through and blow.?

Never done them on a JCB, dont fancy it either from what i have seen.
Every time i work on a JCB i look forward to getting back on a manitou?

I have done a 627 like that too I think, maybe I did take the ram off the front though thinking of it, definitely done the 735, never thought of a die grinder though, clever plan. Sold the 735 now though, not queueing up to do it again.

Genuine pipes only mine cost nearly 4 figures.

 

[atlas]

I done one of the pipes on the crowd ram last week .I took the crowd ram pins out pulled the ram out a bit so I could un do the pipes then I got a 1/2 hydraulic fitting and welded a loop to the one end and screwed that in to the pipe to be removed and attached some big bale sting to it . Then undone the same pipe under the boom and pulled it out as you pull it out the string pulls through so it is ready to pull the new pipe in . There may be a clamp at the bottom of the boom to hold the pipe but it was missing off mine but if you open the door at the back you will be able to see if the clamp is in place if it is that will be the hard part as it looks awkard to reach . when we pulled it back through I needed some to pull it through as I guided it around at the bottom of the boom to get it going back up the boom .
It was a lot easier to do than I was expecting .

 

[Jato]

No need to take the boom out.
you do need crow feet spanner.
pull boom in
undo the hose clamp bolt inside top of inner rear boom
push boom out around 12”
Undo the hose at tilt ram
Tie on piece of string #1
Pull the loose end of hose out of rear of machine
tie off that length of string#1.
So now hose still connected under front of boom and other end sticking straight out behind.
Now tie string #2 onto loose end behind.
Undo fitting at front of boom
Pull the entire hose out forward
Leaving string #2 showing

to refit
Tie on the string #2 to the new hose
Pull hose through and so sticking out straight behind
Connect up at front under the boom.
Remove string #2
Ensure the hose is relaxed and does NOT have any twists as this causes the problem when tele in out.
Get someone to hold the hose where coming out the rear.
Tie on string #1
Pull through the hose and connect to ram
Tele the boom in and out a number of times and check hoses running freely.
reft the clamp in rear of boom.

Use genuine hoses
The cut length is critical and the genuine hose are very flexible

The main thing to watch is that there is no twist in the hose.

 

[MF-ANDY]

I've done a couple. Used 2 x 1/2" bsp male fittings with cords attached. Seem to remember clamps at the back were awkward to refit. Much easier with 2 people. I used genuine hoses

 

[Sta]

Hi Stan here anybody ever encountered problem with fitting hoses in 530 70 boom

 

[Sta]

My problem is lever that's operating shear blade that hose was bust took out pin off tilting ram and pulled ram forward to take off two hoses one up each side of ram connected string to end of hose and removed trying to get them back in is impossible the one that runs on the bottom of the boom piece of cake the top one seems to be coming up against a large piece of light tin type stuff is this part of the hose runner or what

 

[Sta]

Do in need to take inside boom out to remove this pice cause if I don't remove it it's going to bust hoses and that's all I need coming up to silage time stressful times

 

[laich]

On the inside, of inner boom, there should be a tin plate , running from front to back, on either side, at 45 degrees, forming a triangle , shaped tunnel , for the pipes to run in.
I have seen on an older machine, where the plate has fallen down and been broken off.
If you need to put a hose , up inside, but don't have string in, the or tape a string onto a length of alkathene , box section , length of wood, to feed , the string in first.
I got a length of 10 mms round bar , but it into sections and welded his fittings on the ends, so I can, screw it together when needed , and unscrew it to store in workshop , or take in van.

 

[Sta]

Is there any point in trying to sort tin plate are just let it be

 

[Sta]

Got top hose in by treading polythene 25ml pipe down the boom attached tiwn and then hose but still leaves the issue what I do with broken tin

 

[laich]

I reckon ,the tin plate is welded in, before the inner boom , is welded together. It would depend how far in it is broken and if you could reach it , to give it a weld.
Maybe break broken bit off and slide some thing inside remaining part and weld it at outer end.