B7800 O-ring replacement on hydraulic tube to trans.

[TranceAcresKubota]

I have a 2007 Kubota B7800. The tube that carries hydraulic fluid between filter housing and trans. is leaking. A diagram I found shows the tube having 2 o-rings on each end. Hoping to find someone who has changed these out before and can give me some guidance on replacing these o-rings. Thanks.