help. Bucket won't dump

[Cutler tree]

In march I bought a 92 f700 with an altec boom and chip bed. I repainted it and had a hard time getting the bed to dump. like I missed a switch or lever or something. I got it to dump and left it alone as I was still working my old truck untill it sold. I sold my old truck. Now I have forgotten the trick to get it to dump. Anyone know what it is?

 

[Job Corps Tree]

Bucket won't dump

We have a 92 gmc altec, feet down, boom up, switch back to outrigger control and than the dump lever

 

[sgreanbeans]

What he said