Dr. Hydro demonstrating Test port locations for 826,966,1026,1066,Hydro 100, Hydro 186 and 3488 Hydro. Engine RPM must be at 1700 for Charge and Servo readings to be accurate. **When checking servo pressures on these models, servo pressure must be recorded while tractor is in stroke. (Range Transmission in neutral or park)**
www.herrshydro.com
![](https://s2.save4k.ru/pic/ndXVS3bD63c/maxresdefault.jpg)