JS145 noisy slew

[Derrick Hughes]

Had a noise in the slew for a while now just when it stops , not when it's turning , like a break binding noise , I've greased the lot many times including the one under the sump guard , could it be an oil valve that's doing it , no play at all in the slew ring and turns free , just a deep hum when it stops

 

[Mur Huwcun]

Take it you’ve checked if the slew motor gearbox has an oil level or dipstick

 

[Derrick Hughes]

Take it you’ve checked if the slew motor gearbox has an oil level or dipstick

Yes , it only does it as the slew stops ,either way

 

[BertyTEF]

Yes , it only does it as the slew stops ,either way

Slew ring bolts would be worth checking.

 

[Zetor]

Likely a sensor, slew brake will be dragging, had this on both my JS’s
don’t recommend using it until fixed.
Brake is a 2 stage system controlled by sensor usually located in a small valve block behind the cab, sure we just unplugged it to diagnose it, what age is it?

 

[Derrick Hughes]

Likely a sensor, slew brake will be dragging, had this on both my JS’s
don’t recommend using it until fixed.
Brake is a 2 stage system controlled by sensor usually located in a small valve block behind the cab, sure we just unplugged it to diagnose it, what age is it?

2010

 

[Zetor]

Neither of mine are as new as that but I suspect it’ll be a similar system

 

[Derrick Hughes]

Neither of mine are as new as that but I suspect it’ll be a similar system

am I right in thinking it can't be the slew bearing as it only does it as it stops , or not ?

 

[Zetor]

Not that block, could be the on on the right, worth checking the sensor first, mine only made a noise on the slow down,
If it’s not the sensor then it’s a strip down probably in the planetary,

 

[Blue.]

Had the slew gearbox fail on a js130,not easy to get on a lowloader when you can’t slew.

 

[Derrick Hughes]

Not that block, could be the on on the right, worth checking the sensor first, mine only made a noise on the slow down,
If it’s not the sensor then it’s a strip down probably in the planetary,

I've stripped the slew motor , cluches look like new

 

[milkloss]

I've stripped the slew motor , cluches look like new

Chap here had an old hymac, completely different beast I know but it was the gears in the slew motor making a racket much like a groaning brake. Turns out it was a couple of teeth short.

 

[ollievaltra]

I've had an older js130 on hire and it started groaning when slowing down after slewing, It was a few years ago now but sure it was a solinoid in the back right of the machine somewhere.

 

[Zetor]

I've stripped the slew motor , cluches look like new

So the sensor is ok? Make sure it’s ok before you go any deeper.
There’s no clutches in there it’s just a brake, the brake grumbles when the sensor fails only on slow down.

 

[Derrick Hughes]

So the sensor is ok? Make sure it’s ok before you go any deeper.
There’s no clutches in there it’s just a brake, the brake grumbles when the sensor fails only on slow down.

Could you possibly send me a picture of the sensor

 

[Zetor]

Yes, but both of my machines are on site won’t be on them till later in the week
Think the valve block with the sensor is on the far right of your picture