SECTION 2
56
Hydraulic
Refer to the schematic drawing for the following questions. To get the header to raise when the engine is running: A The Lower Primary Spool must shift to the left B The Raise Primary Spool must shift to the left C B, D, and E must happen in order D The Raise Secondary Spool must shift to the left E The Load Check and Signal Checks must open
57
What holds the head up in the neutral position? A Thermal Relief Valve B The Raise Secondary Spool C The Load Check D The Lower Secondary Spool E A, C and D
58
To get the header to lower when the engine is running: A The Lower Primary Spool must shift to the left B A and D must happen in order C The Raise Primary Spool must shift to the left D The Lower Secondary Spool must shift to the left E The Load Check must open
59
The lower secondary spool is: A Pilot operated B Normally closed C Normally open D Solenoid operated E Both A and B
60
The raise secondary spool is: A Pilot operated by the Lower Primary Spool B Pilot operated by the Raise Primary Spool C Both B and D D Spring biased to the right
61
The optional accumulator valve is: A Spring loaded B Pilot operated by the Raise Secondary Spool C Normally closed D Both A and C
2300 Series Axial Flow Combines Page 21
