What mode do you have the machine in when you are running these tests? The computer has a logic to it that gives the best operating characteristics depending on the mode selected by the operator. You should be in the GO or HO modes when doing these tests. Are you aware that there is a straight travel valve that allows joined flow between the travel motors when the machine is traveling straight? If your travel is drifting to one side I would suggest checking case drain flow on the slow travel side. If that is good, I would check out out the swivel next.
The other issue is whether or not the weak travel side is sending a load sense signal to the pump to stroke up. Depending on machine mode the arm is a two pump function so using it while engaging the weak travel will cause both pumps to stroke up and the merge valve to open. Is it possible to check the LS Differential pressure for the travel by itself and the arm by itself? That might tell you if enough pressure is felt on the LS line to get the pump to stroke up. I would think you could have compensator leak on the travel is that is the case.
All this points to the reason I got to not like working the Dash 6 line. They are just too complicated a system just to move some dirt around. They are great when they work properly. They are time consuming and expensive to have to fix when something goes wrong and nobody at the factory level will share any information on how to find and fix the problems.
ok for starters everything associated with that pump with the pumps split is slow . not so weak . tests are always carried out in H/O mode
so i am talking about arm , LH track and swing .. they are all slow . it was the other way around before i switched the LS lines and Pump lines . meaning that everything associated with the rear pump was weak before Boom , RH tack and bucket . so i am thinking that it is something associated with the LS system..
when the pumps are split and i pull in the stick just a little the track spins faster . pumps stay split based on my readings on codes 11 and 12 ...
when the pumps are merged the arm is faster and stronger . and swing is faster . the track remains the same .
The funny thing is both the LS lines and main pump lines were in the wrong places . when i switched them the problem went from one side to the next .. so i dont know if its a pump tvc ls valve issue or control valve issue . what i can probably do is swap the LS lines and see if i get any change ? i am confused here now ..
on your last point about the track sending a ls signal . i doubt very much that any of those functions are sending a LS signal . because the pump never strokes up .. what can i do to check this ? point me in the right direction to check thoroughly the entire LS system . all places to check .. i did change the LS shuttle valves so i may rule those out ...