"manitou mlt 730 120 ls turbo"safe load light and beep stuck on

[ruben cannon]

hi ive been asked by my unce to fix the manitou and the issue with the safe load lights and buzzer being stuck on, so i decide to come on here and see if anyone can give some advice, any ideas at all please let me know. cheers

 

[Goweresque]

Isn't there a mute button on it? The symbol of a horn with a line through it? There is on my 526, and looking at some pics of the 730 cab online it looks to have the same safe load unit. The manitou load indicators (or I think rather the sensor that feeds into it) are notorious for failing. Its just part of the routine now on mine now, pressing mute every time you start up.

 

[Pistonbroke]

I have a 630-120 lsu with that monitor and since the cold weather,it's gone way too sensitive. Anyone know how to calibrate it?

 

[ACEngineering]

I have a 630-120 lsu with that monitor and since the cold weather,it's gone way too sensitive. Anyone know how to calibrate it?

Assuming it's an old 630. Pull the box out, ideally pallet forks and 2 x big fert bags at the ready.
On level ground take the forks off, ift boom fully in the air.

Small hole in back of read out box, poke and hold the reset button in with small allen key or something till it beeps once and bottom half of lights start flashing.
Press and hold the horn button on the box till it beeps once and the top half of lights start flashing.

Pick up the fert bags probably need to have them near the tip or at least half way on forks.
Boom out till the back end just clears the ground then boom back in about 0.6 or 0.8 of a metre as a saftey margin.
Press and hold the test button on the box till it beeps continuously and all the lights flash.

That's it, just put the bags down and lift them up a few times to check your happy with it.

What might have happened is you got rust between the axle and sensor and its distorted it, or it was wet and the frost froze it and it moved sensor a bit. They are so sensitive, they are basically measuring the distortion of the axle beam across 2 points that are no more than 2" apart, or in real simple terms measures the axle casing bending

 

[ACEngineering]

hi ive been asked by my unce to fix the manitou and the issue with the safe load lights and buzzer being stuck on, so i decide to come on here and see if anyone can give some advice, any ideas at all please let me know. cheers

See my post above, calibration will be the same on yours.

BUT you almost certainly have a fault.

Common for the sensor on rear axle to fail or the wires get chewed or damaged, if the wires short together it normally knackered the read out box.

Replace the sensor first as most common then fit a new read out box.

Roughly £500 plus vat should buy both parts delivered to UK address which I can sort for you if your mainland UK, otherwise I'm currently not exporting and that includes northern Ireland.

 

[Pistonbroke]

Assuming it's an old 630. Pull the box out, ideally pallet forks and 2 x big fert bags at the ready.
On level ground take the forks off, ift boom fully in the air.

Small hole in back of read out box, poke and hold the reset button in with small allen key or something till it beeps once and bottom half of lights start flashing.
Press and hold the horn button on the box till it beeps once and the top half of lights start flashing.

Pick up the fert bags probably need to have them near the tip or at least half way on forks.
Boom out till the back end just clears the ground then boom back in about 0.6 or 0.8 of a metre as a saftey margin.
Press and hold the test button on the box till it beeps continuously and all the lights flash.

That's it, just put the bags down and lift them up a few times to check your happy with it.

What might have happened is you got rust between the axle and sensor and its distorted it, or it was wet and the frost froze it and it moved sensor a bit. They are so sensitive, they are basically measuring the distortion of the axle beam across 2 points that are no more than 2" apart, or in real simple terms measures the axle casing bending

Now there's a proper answer to a question! Thanks for that, it's working as it should but one bale of haylage is putting it up in the red,which it didn't before the frosty weather

 

[ACEngineering]

Now there's a proper answer to a question! Thanks for that, it's working as it should but one bale of haylage is putting it up in the red,which it didn't before the frosty weather

maybe unbolt the axle sensor, clean it and bolt/glue it back on. Don't glue the bolt threads! your gluing the surface to seal out the moisture and prevent rust, the proper stuff is some kind of epoxy but all i ever used is a thick Loctite gel and some super glue activator to help it set.

 

[ruben cannon]

Isn't there a mute button on it? The symbol of a horn with a line through it? There is on my 526, and looking at some pics of the 730 cab online it looks to have the same safe load unit. The manitou load indicators (or I think rather the sensor that feeds into it) are notorious for failing. Its just part of the routine now on mine now, pressing mute every time you start up.

View attachment 943182

hey yeah thanks for the imput its just the insurance is getting pickey about it