John Deere 110 tlb loader anti roll back

[Pluc2015!]

Hi,I’m having issu with the the loader operation on the 110.it has a feature that when you lift the boom all the way up it will keep bucket level.it doesn’t work properly some time it will just bind.I am also Lookingg for the for a pdf of a service manual to flow test and pressure check my hydraulic pump thanks