caterpillar excavator 313b problem solve no boom up and no extent trouble code e-22

[@willyjohndanan6752]

boss pwede paturo

[@rolandomarcella8679]

313 overload ingine shifting up/down

[@user-ew5qk7xk8e]

Gudam boss need manual do you sell cat 313B Sr thanks willing to pay

[@bashirhabid2621]

Hi master I have code it says ca778 .plz it means what. On komastu d31px