JCB telehandler boom squealing

[onthehoof]

I know this is common with these when boom is pushed right out but why do they do it and is there an easy fix

 

[Shovelhands]

Spray some waxoyl on it

 

[Speedstar]

I know this is common with these when boom is pushed right out but why do they do it and is there an easy fix

The rear pivot pin bosses will be broken or cracked on it , very big job to sort is a common problem on all 7 meter machines .

 

[onthehoof]

The rear pivot pin bosses will be broken or cracked on it , very big job to sort is a common problem on all 7 meter machines .

Boom off ??

 

[Shovelhands]

Sorry @onthehoof , I thought you meant it was squealing whilst being extended/retracted.

 

[onthehoof]

Sorry @onthehoof , I thought you meant it was squealing whilst being extended/retracted.

Yes when it gets nearly right out, waxoyl makes no difference

 

[Shovelhands]

Yes when it gets nearly right out, waxoyl makes no difference

So it is squealing when you are moving the boom in and out, rather than lifting?

Are the wear pads in good condition?

 

[onthehoof]

So it is squealing when you are moving the boom in and out, rather than lifting?

Are the wear pads in good condition?

Yes last 2 metres or so, wear pads look ok

 

[onthehoof]

So it is squealing when you are moving the boom in and out, rather than lifting?

Are the wear pads in good condition?

On 530/70 had 2 525/67 and they both did the same

 

[Speedstar]

Boom off ??

Yes boom off job any were form £3 to 6K to fix it, they are not the forklifts they were our 15 plate has just been done with only 2500 hours on it .

 

[Shovelhands]

Yes boom off job any were form £3 to 6K to fix it, they are not the forklifts they were our 15 plate has just been done with only 2500 hours on it .

What can they possibly do to justify a 3-6k bill to fix a broken pin?

 

[Speedstar]

What can they possibly do to justify a 3-6k bill to fix a broken pin?

big job to take the boom off, , then it is to cut the bosses out , make new ones fit new pin & weld up , should not be to do a machine as new as our one was .

 

[Shovelhands]

big job to take the boom off, , then it is to cut the bosses out , make new ones fit new pin & weld up , should not be to do a machine as new as our one was .

Wow, new bosses? Could they not be line bored?

 

[onthehoof]

Is it a problem if we just keep using it as it is

 

[onthehoof]

big job to take the boom off, , then it is to cut the bosses out , make new ones fit new pin & weld up , should not be to do a machine as new as our one was .

Is that definitely the problem, is it easy to see if they are cracked/ broken

 

[Shovelhands]

Is that definitely the problem, is it easy to see if they are cracked/ broken

It sounds like your talking about an entirely different issue to @Speedstar ?
If it’s squealing when you boom out or in, and you are not lifting or lowering, then I can’t see what it has to do with the main pivot pin?

 

[onthehoof]

Doesn’t squeal on lifting only boom in / out

 

[Speedstar]

It sounds like your talking about an entirely different issue to @Speedstar ?
If it’s squealing when you boom out or in, and you are not lifting or lowering, then I can’t see what it has to do with the main pivot pin?

our one was make a noise , could not see any thing wrong until I was greasing the pivot pin at the back of the boom & the grease was coming out of the part that is when we seen the hair line crack in the boom boss, they are not welded righ round and crack away from the boom & break up, pee poor they were not like that on the older machines

 

[Shovelhands]

our one was make a noise , could not see any thing wrong until I was greasing the pivot pin at the back of the boom & the grease was coming out of the part that is when we seen the hair line crack in the boom boss, they are not welded righ round and crack away from the boom & break up, pee poor they were not like that on the older machines

So it would seem it’s a different issue that @onthehoof is having?

Yes, not good at all.

 

[Richard Smyth]

our one was make a noise , could not see any thing wrong until I was greasing the pivot pin at the back of the boom & the grease was coming out of the part that is when we seen the hair line crack in the boom boss, they are not welded righ round and crack away from the boom & break up, pee poor they were not like that on the older machines

Don’t think this is the op’s problem, your problem is not a new problem, we had 2 2007 machines a 531 and 541 and both needed the rear bosses redone. A good local engineer did them for much less than yours too