Takeuchi TB280FR. problem

[JerryRtilt]

Does anyone have any idea what could be causing my tb280fr to make a rattling/squark sound and vibration from the right hand lever when lifting the main boom ram ? No other services are affected, it only does it when warm, changed the Pilot Hyd filter and made no difference. Sounds like something needs bleeding but I'm not sure what or how ?
Any help would be much appreciated

 

[V8Druid]

Does anyone have any idea what could be causing my tb280fr to make a rattling/squark sound and vibration from the right hand lever when lifting the main boom ram ? No other services are affected, it only does it when warm, changed the Pilot Hyd filter and made no difference. Sounds like something needs bleeding but I'm not sure what or how ?
Any help would be much appreciated

hose disintegrating internally causing intermittent blockages ? odd it's only the one service affected

 

[JerryRtilt]

hose disintegrating internally causing intermittent blockages ? odd it's only the one service affected

I didn’t find any sign of contamination when I changed the pilot filter or the main Hyd filter.
I’m wondering if it’s something to do with the travel limiting system the FR has that stops the bucket hitting the cab when the boom is offset to the right, I’ve never fully understood how it works unfortunately?

 

[Mick-the-fitter]

FR hmm it does sound like cavitation, it could be that the spool vale that is operated by that service is sticky in the valve slice

 

[Mick-the-fitter]

Does anyone have any idea what could be causing my tb280fr to make a rattling/squark sound and vibration from the right hand lever when lifting the main boom ram ? No other services are affected, it only does it when warm, changed the Pilot Hyd filter and made no difference. Sounds like something needs bleeding but I'm not sure what or how ?
Any help would be much appreciated

Does it do it when lowering?

 

[JerryRtilt]

No

Does it do it when lowering?

only when lifting, only when well warmed up and no other service is affected. Also first started after not being used for a while.

 

[JerryRtilt]

No

Does it do it when lowering?

only when lifting, only when well warmed up and no other service is affected. Also first started after not being used for a while.

 

[V8Druid]

hadn't noticed it was an FR ..... funnily enough I was looking at an FR the other day, on that solar farm site, to see how they work the lock out on the swing beams, to stop you clouting the cab -- 's all mechanical with a big pin, which stops the very complex bottom linkage allowing full travel unless in the full right offset position ... can't see that having anything to do with the issue TBH.

 

[JerryRtilt]

hadn't noticed it was an FR ..... funnily enough I was looking at an FR the other day, on that solar farm site, to see how they work the lock out on the swing beams, to stop you clouting the cab -- 's all mechanical with a big pin, which stops the very complex bottom linkage allowing full travel unless in the full right offset position ... can't see that having anything to do with the issue TBH.

Arr but there’s a switch or potentiometer at the base of the boom and an electrical connection, maybe a solenoid on the drop valve on the lift ram.
But I’m thinking Mick’s suggestion is very likely the problem ?

 

[V8Druid]

Arr but there’s a switch or potentiometer at the base of the boom and an electrical connection, maybe a solenoid on the drop valve on the lift ram.
But I’m thinking Mick’s suggestion is very likely the problem ?

looked like a limit type switch to me to confirm the pin position, but machine was 'bogging' ... presumably that would operate some sort of solenoid operated dump valve, to prevent over lifting, unless swung full right, which could well account for your issue, if toggling/not engaging properly?
swing it full right, check everything is free to function and see if the issue disappears

 

[CPS]

Im not certain but i think the FR has some sort of hydraulic cut out also.
Il see if i have a manual on it and have a look

 

[JerryRtilt]

looked like a limit type switch to me to confirm the pin position, but machine was 'bogging' ... presumably that would operate some sort of solenoid operated dump valve, to prevent over lifting, unless swung full right, which could well account for your issue, if toggling/not engaging properly?
swing it full right, check everything is free to function and see if the issue disappears

Tried it in all positions and makes no difference, also tried all positions of the switch in the cab that controls the bucket interface system which defaults to a position that limits the travel of the ram, definitely elec/Hyd controlled as well as the mechanical pin.
What’s also concerning me is that the pump is noisy when the machine gets properly warmed up

Im not certain but i think the FR has some sort of hydraulic cut out also.
Il see if i have a manual on it and have a look

it has, there’s a switch in the cab that defaults to a position that limits the upward travel of the ram.
Also concerned that the pump is noisy?

 

[CPS]

Check/change the filters in the tanks also would be a star too

 

[JerryRtilt]

Check/change the filters in the tanks also would be a star too

Thanks Aiden, filters ordered

 

[Mick-the-fitter]

Arr but there’s a switch or potentiometer at the base of the boom and an electrical connection, maybe a solenoid on the drop valve on the lift ram.
But I’m thinking Mick’s suggestion is very likely the problem ?

Or as you say the safety valve on the ram!, swap the hoses on the ram if you can without an extention hose then you could get vibration on the down lever position!

 

[JerryRtilt]

Or as you say the safety valve on the ram!, swap the hoses on the ram if you can without an extention hose then you could get vibration on the down lever position!

Thanks Mick, looks like it may be possible to swap the hoses, will have a go tomorrow. Also going to drop the oil out of the tank and check the filters for any contamination as @CPS suggested

 

[V8Druid]

Thanks Mick, looks like it may be possible to swap the hoses, will have a go tomorrow. Also going to drop the oil out of the tank and check the filters for any contamination as @CPS suggested

make sure it's full right, as the down circuit may not be controlled/protected by the anti collision/cab avoidance set up

 

[Mick-the-fitter]

Yeh good shout Gra, just for a bib test really so don’t get close to anything

 

[JerryRtilt]

Drained the the tank and cleaned the suction filter, replaced the return filter, refilled with fresh oil. Suction filter was a bit dirty but no sign of anything nasty, return filter looked fine, been changed regularly. @CPS . Takeuchi manual says the original Takeuchi oil is good for 4000hrs. the machines done about 3200 I've owned it from new 2017, sits around a bit. Ran out of time to try and swap the hoses around @Mick-the-fitter , will be the next thing to try.

 

[V8Druid]

all the crap is going to be inside the return filter ... pick up wants changing - looks saturated in crud