Cat 320 L 9KK the pump isn't supplying enough power. When trying to push down boom to raise machine, machine won't raise, if I add a function such as stick or bucket flow or power occurs and raises machine. Same with travel, If I try forward travel on one side to turn, machine won't turn until I add a function such as stick or bucket - pump fires up and machine turns
That sounds like classic symptoms of a resolver valve sticking.
Please tell me more, where might I find the resolver valve - Thank you
Nige where is the resolver valve I have the same issue with my 320L 9KK
Good day This has been a common complaint with many excavators if I may suggest it could be that as simple as geometry in such a case simply checking the pressure when the boom lower stalls would confirm a hydraulic issue. Kind regards Uffex