John Deere 7600 Hydraulic pump replacement

[reuer]

Does anyone have experience with diagnosing the 7000 series tractors hydraulic pumps? Functions are slow and pump whines when using hydraulics. Ran some oil out of filter test port between charge and main pumps into a pail and seems to have small amount of froth to it. This tractor does have 19,000 hours on it so I understand it is probably time for a new pump, just looking for others experiences with charge pumps and possible suction leaks.
Also has anyone done the upgrade to the later 7010 series pump to their tractor? Thanks

 

[rockcreek4630]

You need to do more checks . You could have
problems with anyone of the hyd functions
that will cause slow and noisy hyd . You
can try using two functions at once and see
if anything changes like two Scv's atonce,
scv and brakes and so on. It is best to
start with new filters and sump screen. And
conversion is no big deal.